ISO 63 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-63 Vacuum Flange Size, Typically Used with 2.5 Inch O.D. (63.50 mm) Tubing. These ISO DN 63 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-63 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-63Common Dimensions:A = 2.67" (67.82mm) B = 0.15" (3.90mm)

ISO 80 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-80 Vacuum Flange Size, Typically Used with 3 Inch O.D. (76.2 mm) Tubing. These ISO DN 80 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-80 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-80Common Dimensions:A = 3.15" (80mm) B = 0.15" (3.90mm)

ISO 100 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-100 Vacuum Flange Size, Typically Used with 4 Inch O.D. (101.6 mm) Tubing. These ISO DN 100 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-100 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-100Common Dimensions:A = 3.90" (99mm) B = 0.15" (3.90mm)

ISO 160 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-160 Vacuum Flange Size, Typically Used with 6 Inch O.D. (152.4 mm) Tubing. These ISO DN 160 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-160 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-160Common Dimensions:A = 5.94" (151mm) B = 0.15" (3.90mm)

ISO 200 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-200 Vacuum Flange Size, Typically Used with 8 Inch O.D. (203.2 mm) Tubing. These ISO DN 200 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-200 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-200Common Dimensions:A = 8.3" (210.82mm) B = 0.15" (3.90mm)

ISO 250 Centering Ring Stainless Steel with Viton® O-Ring without spacer, NW-250 Vacuum Flange Size, Typically Used with 10 Inch O.D. (254 mm) Tubing. These ISO DN 250 without spacer 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 Without Spacer Centering Ring, for Sealing of NW-250 Vacuum Fittings, Stainless Steel with Viton® O-Ring ISO-LF Flange Size: NW-250Common Dimensions:A = 10.2" (259mm) B = 0.15" (3.90mm)