Zoro Select Spiral Wound Gasket PTFE Filler 2-1/2 in 1/8 in

Spiral Wound Gasket PTFE Filler 2-1/2 in

The Zoro Select spiral wound gasket is built for industrial flange connections that demand reliable sealing across extreme temperature swings. Its stainless steel 304 winding and PTFE filler resist aggressive chemicals while the carbon steel outer ring adds structural stability. This design meets ASME B16.20 standards for consistent performance in demanding piping systems.

Suited for ANSI Class 150 flanges on 2-1/2 inch pipe

Engineers specifying Class 150 flanges on 2-1/2 inch pipe will find the 3-1/4 inch inner diameter and 4-7/8 inch outer diameter match the standard dimensions. The gasket handles continuous service from -300 °F to 1,200 °F, covering most cryogenic and high-heat process lines. Buyers needing a different pressure class, pipe size, or filler material such as graphite should look at other parts.

ASME B16.20 compliance decides fit

The single specification that confirms this is the correct part is the ASME B16.20 standard marking stamped on the gasket. Only gaskets manufactured to this standard guarantee the dimensional tolerances and material traceability required for code-stamped pressure vessels and regulated piping. Verifying that marking against your piping specification is the decisive step before installation.