ISO-F DN 63 Bored Blank Flange, For 2.5 Inch O.D. (63.5 mm) Tubing, Weld-On, Fixed Vacuum Flange, Bolted, Through Holes, Stainless Steel. These ISO-F DN 63 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 2.5 Inch O.D. (63.5 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-63Number Bolt Holes: 4Common Dimensions: A = 5.125" (130.00 mm), B = 2.43" (61.90 mm), C = 0.500" (11.90 mm)

ISO-F DN 80 Bored Blank Flange, For 3 Inch O.D. (76.2 mm) Tubing, Weld-On, Fixed Vacuum Flange, Bolted, Through Holes, Stainless Steel. These ISO-F DN 80 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 3 Inch O.D. (76.2 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-80Number Bolt Holes: 8Common Dimensions: A = 5.56" (145.00 mm), B = 2.93" (74.60 mm), C = 0.500" (11.90 mm)

ISO-F DN 100 Bored Blank Flange, For 4 Inch O.D. (101.6 mm) Tubing, Weld-On, Fixed Vacuum Flange, Bolted, Through Holes, Stainless Steel. These ISO-F DN 100 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 4 Inch O.D. (101.6 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-100Number Bolt Holes: 8Common Dimensions: A = 6.5" (165.10 mm), B = 3.875" (99.30 mm), C = 0.500" (11.90 mm)

ISO-F DN 100 Bored Blank Flange, For 4 Inch O.D. (101.6 mm) Tubing, Weld-On, Fixed Vacuum Flange, Bolted, M-8 Tapped Holes, Stainless SteelThese ISO-F DN 100 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 4 Inch O.D. (101.6 mm) Tubing, Flange Bolted Weld-On, M8 Tapped Holes ISO-LF Flange Size: NW-100Number Bolt Holes: 8Common Dimensions: A = 6.5" (165.10 mm), B = 3.875" (99.30 mm), C = 0.500" (11.90 mm)

ISO-F DN 160 Bored Blank Flange, For 6 Inch O.D. (152.4 mm) Tubing, Weld-On, Fixed Vacuum Flange, Bolted, Through Holes, Stainless Steel. These ISO-F DN 160 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 6 Inch O.D. (152.4 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-160Number Bolt Holes: 8Common Dimensions: A = 8.88" (225.00 mm), B = 5.88" (149.20 mm), C = 0.625" (16.00 mm)

ISO-F DN 200 Bored Blank Flange, For 10 Inch O.D. (203.2 mm) Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 200 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 8 Inch O.D. (203.2 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-200Number Bolt Holes: 12Common Dimensions: A = 11.13" (285.00 mm), B = 7.88" (200.00 mm), C = 0.625" (16.00mm)

ISO-F DN 250 Bored Blank Flange, For 10 Inch O.D. (254.0 mm) Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 250 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 10 Inch O.D. (254.0 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-LF Flange Size: NW-250Number Bolt Holes: 12Common Dimensions: A = 13.18" (335.00 mm), B = 9.88" (250.80 mm), C = 0.625" (16.00mm)

ISO-F DN 320 Bored Blank Flange, For 12.0 Inch (323.8 mm) O.D. Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 320 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 12.0 Inch (323.8 mm) O.D. Tubing, Flange Bolted Weld-On, Through Holes ISO-F Flange Size: 320Number Bolt Holes: 12Common Dimensions: A = 16.73" (425.00 mm), B = 13" (318.00 mm), C = 0.79" (20.00 mm)

ISO-F DN 320 Bored Blank Flange, For 12.75 Inch (323.8 mm) O.D. Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 320 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 12.75 Inch (323.8 mm) O.D. Tubing, Flange Bolted Weld-On, Through Holes ISO-F Flange Size: 320Number Bolt Holes: 12Common Dimensions: A = 16.73" (425.00 mm), B = 12.51" (318.00 mm), C = 0.79" (20.00 mm)

ISO-F DN 400 Bored Blank Flange, For 16 Inch O.D. (406.4 mm) Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 400 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 16 Inch O.D. (406.4 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-F Flange Size: 400Number Bolt Holes: 16Common Dimensions: A = 20.0" (510.03 mm), B = 15.62" (396.75 mm), C = 0.79" (20.07 mm)

ISO-F DN 500 Bored Blank Flange, For 20 Inch O.D. (508.0 mm) Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 500 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 20 Inch O.D. (508.0 mm) Tubing, Flange Bolted Weld-On, Through Holes ISO-F Flange Size: 500Number Bolt Holes: 16Common Dimensions: A = 24.02" (610.11 mm), B = 19.62" (498.35 mm), C = 0.79" (20.07 mm)

ISO-F DN 630 Bored Blank Flange, For 24 Inch O.D. (609.6 mm) Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 630 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 24 Inch O.D. (609.6 mm) Tubing, Flange Bolted Weld-On, Through HolesISO-F Flange Size: 630Number Bolt Holes: 20Common Dimensions:A = 29.53" (750.06 mm)B = 23.80" (604.77 mm)C = 0.94" (23.88 mm)

ISO-F DN 800 Bored Blank Flange, For 30 Inch O.D.Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 800 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 30 Inch O.D. Tubing, Flange Bolted Weld-On, Through HolesISO-F Flange Size: 800Number Bolt Holes: 24Common Dimensions:A = 36.22" (919.99 mm)B = 29.72" (754.89 mm)C = 0.94" (23.88 mm)

ISO-F DN 1000 Bored Blank Flange, For 38 Inch O.D.Tubing, Weld-On, Fixed Vacuum Flange, Through Holes, Bolted, Stainless Steel. These ISO-F DN 1000 bored blank flanges follow vacuum technology standards as described in DIN 28404 and ISO 1609. ISO-F fixed flange vacuum fittings have a bolt circle where bolts align the two flanges. A centering ring which contains a rubber elastomeric O-ring is used to form the vacuum seal between the two flange faces. They are commonly used to build process vacuum plumbing and systems for industrial vacuum applications. The ISO standard sizes for large LF flanges are ISO-F DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made of corrosive resistant 304L stainless steel. Bored Blank for 38 Inch O.D. Tubing, Flange Bolted Weld-On, Through Holes ISO-F Flange Size: 1000Number Bolt Holes: 38Common Dimensions:A = 44.094" (1,119.99) mm)B = 37.650" (956.31mm)C = 0.94" (23.88 mm)

ISO 63 Centering Ring Aluminum with Viton® O-Ring, NW-63 Vacuum Flange Size, Typically Used With 2.5 Inch O.D. (63.50 mm) Tubing. These ISO DN 63 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 63 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material.ISO DN 63 Centering Ring, for Sealing of NW-63 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-63Common Dimensions:A = 2.75" (70.00mm) B = 0.15" (3.90mm)

ISO 80 Centering Ring Aluminum with Viton® O-Ring, NW-80 Vacuum Flange Size, Typically Used with 3 Inch O.D. (76.2 mm) Tubing. These ISO DN 80 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 80 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 80 Centering Ring, for Sealing of NW-80 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM)ISO-LF Flange Size: NW-80 Common Dimensions:A = 3.26" (83.00 mm) B = 0.15" (3.9 mm)

ISO 100 Centering Ring Aluminum with Viton® O-Ring, NW-100 Vacuum Flange Size, Typically Used with 4 Inch O.D. (101.6 mm) Tubing These ISO DN 100 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 100 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 100 Centering Ring, for Sealing of NW-100 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-100 Common Dimensions:A = 4.01" (102.00 mm) B = 0.15" (3.9 mm)

ISO 160 Centering Ring Aluminum with Viton® O-Ring, NW-160 Vacuum Flange Size, Typically Used with 6 Inch O.D. (152.4 mm) Tubing These ISO DN 160 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 160 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 160 Centering Ring, for Sealing of NW-160 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-160 Common Dimensions:A = 6.02" (153.00 mm) B = 0.15" (3.9 mm)

ISO 200 Centering Ring Aluminum with Viton® O-Ring, NW-200 Vacuum Flange Size, Typically Used with 8 Inch O.D. (203.2 mm) Tubing These ISO DN 200 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 200 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 200 Centering Ring, for Sealing of NW-200 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-200 Common Dimensions:A = 8.38" (213.00 mm) B = 0.15" (3.9 mm)

ISO 250 Centering Ring, NW-250 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used with 10 Inch O.D. (254 mm) Tubing. These ISO DN 250 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 250 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 250 Centering Ring, for Sealing of NW-250 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-250 Common Dimensions:A = 10.28" (261.00 mm) B = 0.15" (3.90mm)

ISO 320 Centering Ring, NW-320 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used With 12 Inch O.D. (304.8 mm) Tubing. These ISO DN 320 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 320 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 320 Centering Ring, For Sealing of NW-320 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-320 Common Dimensions:A = 12.52" (318mm) B = 0.22" (5.60mm)

ISO 400 Centering Ring, NW-400 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used With 16 Inch O.D. (406.4 mm) Tubing. These ISO DN 400 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 400 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 400 Centering Ring, For Sealing of NW-400 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-400 Common Dimensions:A = 15.75" (400mm) B = 0.22" (5.60mm)

ISO 500 Centering Ring, NW-500 Vacuum Flange Size, Aluminum with Viton O-Ring, Typically Used With 20 Inch O.D. (508 mm) Tubing. These ISO DN 500 centering rings are made of aluminum with durable viton (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 500 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 500 Centering Ring, For Sealing of NW-500 Vacuum Flanges, Aluminum with Viton O-Ring (FPM) ISO-LF Flange Size: NW-500 Common Dimensions:A = 19.72" (501mm) B = 0.22" (5.60mm)

ISO 630 Centering Ring, NW-630 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used With 24 Inch O.D. (609.6 mm) Tubing. These ISO DN 630 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 630 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 630 Centering Ring, For Sealing of NW-630 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-630 Common Dimensions:A = 25.62" (651.00 mm) B = 0.22" (5.60 mm)

ISO 800 Centering Ring, NW-800 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used With 32 Inch O.D. (812.8 mm) Tubing. These ISO DN 800 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 800 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 800 Centering Ring, For Sealing of NW-800 Vacuum Flanges, Aluminum with Viton O-Ring (FPM) ISO-LF Flange Size: NW-800 Common Dimensions:A = 31.50" (800 mm) B = 0.22" (5.60 mm)

ISO 1000 Centering Ring, NW-1000 Vacuum Flange Size, Aluminum with Viton® O-Ring, Typically Used with 40 Inch O.D. (1016 mm) Tubing. These ISO DN 1000 centering rings are made of aluminum with durable Viton® (FPM) rubber O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. These centering rings follow vacuum technology standards as described in DIN 28404 and ISO 1609. The centering ring which contains a rubber elastomeric O-ring forms the vacuum seal between the two mating ISO-K or ISO-F flange faces. ISO-K fittings are quick to assemble using claw clamps (please see figure - click to enlarge) and can be connected together in any orientation. The claw clamp hooks into a ridged groove in the back side of the ISO-K flange. ISO-F fixed flange vacuum fittings are different and have a bolt circle where bolts align the two flanges. These ISO 1000 centering rings are commonly used to build process vacuum plumbing and systems for industrial standard and high vacuum applications. The ISO standard sizes for large LF flanges are ISO-F and ISO-K DN 63, 80, 100, 160, 200, 250, 320, 400, 500, 630, 800, 1000. These vacuum fittings are made with inner and outer rings of Aluminum 6082 with FPM rubber O-ring material. ISO DN 1000 Centering Ring, For Sealing of NW-1000 Vacuum Flanges, Aluminum with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-1000 Common Dimensions:A = 39.37" (1000 mm) B = 0.22" (5.60 mm)