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White PTFE full-face flange gasket with eight bolt holes

Zoro Select

Zoro Select Full Face PTFE Flange Gasket 3" Pipe 1/8" Thick

SKU CH-TSD8-Y9B7M

Full-face PTFE flange gasket for 3-inch pipe, rated ANSI Class 300 with eight 7/8-inch bolt holes and a temperature range of -450 to 500 degrees F

  • PTFE material withstands extreme temperatures from -450 to 500 degrees Fahrenheit
  • Full-face design with eight bolt holes matches ANSI Class 300 flange specifications
  • White PTFE construction provides chemical resistance for demanding fluid sealing applications
  • Gasket fits 3-inch pipe with 1/8-inch thickness for reliable flange connections
  • Inside diameter 3-1/2 inches and outside diameter 8-1/4 inches ensure precise fit

Zoro Select PTFE Full-Face Gasket

This Zoro Select full-face flange gasket is made from PTFE for 3-inch pipe in ANSI Class 300 service. The material resists a wide range of chemicals and operates from minus 450 degrees Fahrenheit to 500 degrees Fahrenheit. It suits maintenance crews and process plants that need a soft, conformable seal without metal reinforcement.

Eight Bolt Holes Align With Class 300 Flanges

The gasket measures 8 1/4 inches outside diameter with a 3 1/2 inch inside diameter and eight bolt holes of 7/8 inch diameter. This pattern matches ANSI Class 300 flanges directly, so installers do not need to drill or modify the gasket. No fasteners are included, and the gasket is not metal detectable.

PTFE Temperature Range Defines The Practical Limit

The operating window of minus 450 degrees Fahrenheit to 500 degrees Fahrenheit sets the boundary for safe use. Above 500 degrees Fahrenheit the PTFE can degrade, and below minus 450 degrees Fahrenheit it may become brittle. The gasket carries a California Proposition 65 warning for reproductive-harm chemicals.

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Price $42.99
Pricier than about 90% of the 147 comparable items (median $11.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

When should the PTFE gasket be replaced?

Replace the gasket whenever the flange joint is broken for service, or if visual inspection shows creep, cracking or chemical attack on the PTFE material.

What pressure class limits continuous service?

The gasket is rated for ANSI Class 300 flanges, so that class defines the maximum sustained pressure at the 500 °F upper temperature limit.

How much heat does the gasket add to the system?

The PTFE material itself generates no heat; it simply withstands process temperatures from -450 °F up to 500 °F without degrading.

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