ISO 63 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene rubber (CR) O-ring material. ISO DN 63 Centering Ring, For Sealing of NW-63 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-63 Common Dimensions:A = 2.75" (70.00mm) B = 0.15" (3.90mm)

ISO 80 Centering Ring Aluminum with Neoprene (Chloroprene, CR) O-Ring, NW-80 Vacuum Flange Size, Typically Used with 3 Inch O.D. (76.20 mm) Tubing. These ISO DN 80 centering rings are made of aluminum with Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene rubber (CR) O-ring material. ISO DN 80 Centering Ring, For Sealing of NW-80 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-80Common Dimensions:A = 3.26" (83.00 mm) B = 0.15" (3.9 mm)

ISO 100 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 100 Centering Ring, For Sealing of NW-100 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-100Common Dimensions:A = 4.01" (102.00 mm) B = 0.15" (3.9 mm)

ISO 160 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 160 Centering Ring, For Sealing of NW-160 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-160Common Dimensions:A = 6.02" (153.00 mm) B = 0.15" (3.9 mm)

ISO 200 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 200 Centering Ring, For Sealing of NW-200 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-200Common Dimensions:A = 8.38" (213.00 mm) B = 0.15" (3.9 mm)

ISO 250 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 250 Centering Ring, For Sealing of NW-250 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-250Common Dimensions:A = 10.28" (261.00 mm) B = 0.15" (3.90mm)

ISO 320 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 aluminum with Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 320 Centering Ring, For Sealing of NW-320 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-320Common Dimensions:A = 12.52" (318mm) B = 0.22" (5.60mm)

ISO 400 Centering Ring Aluminum with Neoprene (Chloroprene, CR) 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 aluminum with Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 400 Centering Ring, For Sealing of NW-400 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-400Common Dimensions:A = 15.75" (400mm) B = 0.22" (5.60mm)

ISO 500 Centering Ring Aluminum with Neoprene (Chloroprene, CR) O-Ring, NW-500 Vacuum Flange Size, Typically Used with 20 Inch O.D. (508 mm) Tubing. These ISO DN 500 centering rings are made of aluminum with Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 500 Centering Ring, For Sealing of NW-500 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-500Common Dimensions:A = 19.72" (501mm) B = 0.22" (5.60mm)

ISO 630 Centering Ring Aluminum with Neoprene (Chloroprene, CR) O-Ring, NW-630 Vacuum Flange Size, Typically Used with 24 Inch O.D. (609.6 mm) Tubing. These ISO DN 630 centering rings are made of aluminum with Neoprene (CR) rubber, also called polychloroprene or chloroprene, O-rings and are used to seal both ISO-K and ISO-F vacuum flanges. Neoprene offers moderate resistance to oils and petroleum products, but provides significantly greater resistance to sunlight, ozone, and weather. Neoprene provides very good-to-excellent resistance against the spread of flame. Minimum Service Temperature -30° F to -70° F; Maximum Service Temperature +220° F to +280° F. Generally Resistant to Moderate chemicals and acids, ozone, oils, fats, greases, and solvents. Neoprene rubber resists fire and withstands sunlight, ozone, and weather. Specific grades of neoprene can also meet flame, smoke and toxicity (FST) requirements for the mass transit industry. Applications include door seals, window seals, hose covers, vibration mounts, and shock absorbers. Neoprene is also used with HVAC units, electrical or electronic enclosures, and weather stripping for fire doors. Additional applications include expansion joints and bearing pads in built structures. 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 Chloroprene (CR) rubber O-ring material. ISO DN 630 Centering Ring, For Sealing of NW-630 Vacuum Flanges, Aluminum with Chloroprene (CR) rubber O-Ring ISO-LF Flange Size: NW-630Common Dimensions:A = 25.62" (651.00 mm) B = 0.22" (5.60 mm)