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Stainless steel vacuum centering ring for 1-1/2 inch tube, ISO-K flange, rated to 320F

Usa Sealing

Usa Sealing Centering Ring Vacuum Fitting 1-1/2" Tube Stainless Steel 320F 4F 10-7 torr

SKU CH-0B04-35STS

Centers vacuum fittings for 1-1/2 inch tube with stainless steel ring rated to 320°F and 10-7 torr

  • Centering ring aligns vacuum flanges precisely
  • Stainless steel inner ring resists corrosion up to 320 °F
  • Rated to 10-7 torr vacuum at 72 °F
  • Autoclave sterilisation compatible for clean processes
  • Conforms to GB4982-ISO-K standard dimensions

Vacuum Fitting Centering Ring 1-1/2" Tube

The USA INDUSTRIALS centering ring aligns 1-1/2 inch tube within compatible vacuum flanges. It serves engineers and technicians assembling high-vacuum systems that require reliable sealing. The stainless steel inner ring withstands demanding process conditions. This component suits maintenance and new-build vacuum line work.

Thermal Range 320F Max 4F Min Vacuum 10-7 torr

The ring operates continuously from 4 degrees F up to 320 degrees F. At 72 degrees F it supports a vacuum rating of 10-7 torr. Stainless steel construction resists thermal cycling without degradation. Autoclave sterilization is recommended for contamination-sensitive environments.

Flange Compatibility 2 3/16 Inch OD ISO-K Standard

Designed for flanges with a 2 3/16 inch outside diameter, the ring follows the GB4982-ISO-K interface standard. No screen is included, so users must add filtration separately if required. The part integrates with existing ISO-K hardware to complete the seal. It frees assembly time by eliminating custom machining.

How it compares

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Price $13.99
Cheaper than about 67% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameUSA INDUSTRIALS

Questions about this item

How do I install the centering ring on a 1-1/2" tube and which step is often missed?

Place the stainless-steel inner ring between the tube end and the 2 3/16" flange, then torque the clamp evenly; the step often missed is confirming the ring seats fully before tightening.

What maintenance or replacement will the centering ring need over time?

Inspect the stainless-steel inner ring for corrosion or deformation after each autoclave cycle at 320 °F; replace it if the sealing surface shows pitting or if vacuum performance drops below 10-7 torr.

What limit appears first when the fitting runs continuously at high temperature?

The 320 °F maximum operating temperature is the first hard limit; sustained exposure above it can degrade the stainless-steel ring and cause vacuum loss beyond the rated 10-7 torr.

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