ISO 63 Centering Ring Stainless Steel 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 stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 63 Centering Ring, for Sealing of NW-63 Vacuum Flanges, Stainless Steel 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 Stainless Steel 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 stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 80 Centering Ring, for Sealing of NW-80 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-80Common Dimensions:A = 3.26" (83.00 mm) B = 0.15" (3.90mm)

ISO 100 Centering Ring Stainless Steel 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 stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 100 Centering Ring, for Sealing of NW-100 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-100Common Dimensions:A = 4.01" (102.00 mm) B = 0.15" (3.9 mm)

ISO 160 Centering Ring Stainless Steel 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 stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 160 Centering Ring, for Sealing of NW-160 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-160Common Dimensions:A = 6.02" (153.00 mm) B = 0.15" (3.9 mm)

ISO 200 Centering Ring Stainless Steel 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 stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 200 Centering Ring, for Sealing of NW-200 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-200Common Dimensions:A = 8.38" (213.00 mm) B = 0.15" (3.9 mm)

ISO 250 Centering Ring Stainless Steel with Viton® O-Ring, NW-250 Vacuum Flange Size, Typically Used with 10 Inch O.D. (254 mm) Tubing. These ISO DN 250 centering rings are made of stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 250 Centering Ring, for Sealing of NW-250 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-250Common Dimensions:A = 10.28" (261.00 mm) B = 0.15" (3.90mm)

ISO 320 Centering Ring Stainless Steel with Viton® O-Ring, NW-320 Vacuum Flange Size, Typically Used with 12 Inch O.D. (304.8 mm) Tubing. These ISO DN 320 centering rings are made of stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 320 Centering Ring, for Sealing of NW-320 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-320Common Dimensions:A = 12.52" (318mm) B = 0.22" (5.60mm)

ISO 400 Centering Ring Stainless Steel with Viton® O-Ring, NW-400 Vacuum Flange Size, Typically Used with 16 Inch O.D. (406.4 mm) Tubing. These ISO DN 400 centering rings are made of stainless steel 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 Stainless Steel with FPM rubber O-ring material.ISO DN 400 Centering Ring, for Sealing of NW-400 Vacuum Flanges, Stainless Steel with Viton® O-Ring (FPM) ISO-LF Flange Size: NW-400Common Dimensions:A = 15.75" (400mm) B = 0.22" (5.60mm)