ISO 63 Centering Ring Aluminum with Buna-N® 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 Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 63 Centering Ring, For Sealing of NW-63 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) ISO-LF Flange Size: NW-63 Common Dimensions:A = 2.75" (70.00mm) B = 0.15" (3.90mm)

ISO 80 Centering Ring Aluminum with Buna-N® 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 Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 80 Centering Ring, For Sealing of NW-80 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) 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 Buna-N® O-Ring, NW-100 Vacuum Flange Size, Typically Used With 4 Inch O.D. (101.6 mm) TubingThese ISO DN 100 centering rings are made of aluminum with durable Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 100 Centering Ring, For Sealing of NW-100 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) 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 Buna-N® 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 Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 160 Centering Ring, For Sealing of NW-160 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) 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 Buna -N® 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 Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 200 Centering Ring, For Sealing of NW-200 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) ISO-LF Flange Size: NW-200 Common Dimensions:A = 8.38" (213.00 mm) B = 0.15" (3.9 mm)

ISO 250 Centering Ring Aluminum with Buna-N® 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 aluminum with durable Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 250 Centering Ring, For Sealing of NW-250 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) 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 Buna-N® 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 Buna-N® (NBR) 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 NBR rubber O-ring material. ISO DN 320 Centering Ring, For Sealing of NW-320 Vacuum Flanges, Aluminum with Buna-N® O-Ring (NBR) ISO-LF Flange Size: NW-320 Common Dimensions:A = 12.52" (318mm) B = 0.22" (5.60mm)