NW/KF Clamps, O-Rings, Blanking Plates & Plastic Caps

    

Blank Caps

92200-XX, 92202-XX

Used to blank off vacuum ports not being used. Can also be used for troubleshooting by blanking off sections to determine possible leaks.

NOTE: Dimension A=5mm (.20"); B=2.5mm (.10") on all Blank Caps

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Plastic Protection Caps

92250-XX

Use these plastic protection caps to protect the NW/KF flanges from scratches and dust.

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NW/KF Wing Nut Clamps, Cast Aluminum

92210-XX

Cost efficient aluminum die cast clamp to connect standard NW/KF components. NW/KF 16 clamps can be used on NW/KF 10 flanges. This is the most popular wing nut clamp.
Thread size: 10-32.

NOTE: Thickness=16.5mm (.64") on all Cast Aluminum Wing Nut Clamps

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NW/KF Wing Bolt Clamps, Precision CNC Machined Aluminum

92211-XX

These clamps are precision machined from a solid bar of aluminum with stainless pins and stud. More compact and stronger than cast aluminum. NW/KF 16 clamps can be used on NW/KF 10 flanges.
Thread size: 1/4 x 20

NOTE: Thickness, B=16mm (.63") on all Machined Aluminum Wing Nut Clamps

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NW/KF Wing Nut Clamps, Forged 304 Stainless Steel

92209-XX

Forged 304 stainless steel clamps are suitable for cleanroom environments. NW/KF 16 clamps can be used on NW/KF 10 flanges.
Thread size: 5/16 x 18

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NW/KF Centering Rings, 304 Stainless Steel with Viton^® O-Ring

92220-XX

Used to center and seal NW/KF flanges with O-ring. Viton® service temperature is 200°C Max. May be black or brown - color cannot be specified.

Note: Diameter, B=5.3mm (.21") on all O-Rings

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NW/KF Centering Rings, 304 Stainless Steel with 60 Mesh SS Screen and Viton^® O-Ring

92222-XX

Used on pumps and other applications where components need to be shielded from small particles entering. May be black or brown - color cannot be specified.

Note: Diameter, B=5.3mm (.21") on all O-Rings

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NW/KF Centering Rings, 304 Stainless Steel with Filter and Viton^® O-Ring

92224-XX

15 mesh stainless steel filter to protect pump intake.

Note: Diameter, B=5.3mm (.21") on both O-Rings

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NW/KF Adaptive Centering Rings, 304 Stainless Steel with Viton^® O-Ring

92225-XXXX

These adapter rings are used when less common (older) NW/KF 10, NW/KF 20 and NW/KF 32 flanges need to be connected to the standard NW/KF parts. May be black or brown - color cannot be specified.

Note: Diameter=5.3mm (.21") on all O-Rings

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NW/KF Centering Rings, 304 Stainless Steel without O-ring

92223-XX

Made for standard 5.3mm (.21") diameter O-rings.

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O-Rings for NW/KF Centering Rings in Viton^®, Silicone and Buna-N

92227-XX V,S,B

Depending on pressure on the O-ring, environment and service temperature, O-rings need to be renewed to ensure leak-free seals. Use the O-rings to service the NW/KF connections on your vacuum systems. O-rings are sold in packages of 10. Viton® O-rings may be black or brown - color cannot be specified.
Viton® is used for high vacuum applications, max. temperature is 250°C
Silicone is used for chemical applications, max. temperature is 220°C
Buna-N is used for non-critical and low vacuum applications, max. temperature is 130°C.

Note: Cross Section Diameter, A=5.3mm (.21") on all O-rings

O-ring Materials Comparison Table
Property	Buna-N	Viton®	Silicone
Common Name	Nitrile	Fluor Elastomere	Silicone Rubber
Tear Resistance	Good	Good	Good
Abrasive Resistance	Good	Good	Poor
Ozone Resistance	Poor	Excellent	Excellent
Weather Resistance	Fair	Excellent	Excellent
Heat Resistance	Fair	Excellent	Excellent
Chemical Resistance	Fair	Excellent	Good
Oil Resistance	Poor	Excellent	Poor
Acid Resistance	Fair	Excellent	Good
Alkali Resistance	Good	Good	Fair
Steam Resistance	Fair	Fair	Poor
Electrical Resistance	Fair	Fair	Excellent
Freeze Resistance	Good	Poor	Excellent
Flame Resistance	Poor	Excellent	Fair
Minimum Usable Temperature	-65°F / -54°C	-65°F / -54°C	-120°F / -85°C
Maximum Usable Temperature	300°F / 150°C	500°F / 260°C	450°F / 232°C
Color	Black	Black / Brown	Red
Impermeability	Fair	Good	Poor
Tensile Strength	Good	Good	Poor
Cost	Low	High	Medium