Value Collection TES70228 O-ring Dash 228 Ptfe Silicone

Product Description

The VALUE COLLECTION TES70228 is a Dash 228 PTFE-encapsulated silicone o-ring designed for demanding sealing applications across plumbing, HVAC, and process piping systems. It measures 2.25 inches inside diameter, 2.5 inches outside diameter, and 0.125 inches thick with a round cross section. The construction features seamless, uniform FEP-Teflon encapsulation that fully encloses a silicone elastomer core. This design delivers the chemical and temperature resistance of solid PTFE while retaining the elasticity and recovery properties of a traditional elastomeric o-ring. Licensed tradespeople and maintenance technicians working on fluid handling and sealing applications install this part.

This o-ring suits residential and commercial sealing scenarios where exposure to aggressive chemicals or wide temperature swings rules out standard nitrile or EPDM rings. The Dash 228 designation identifies the standard size, making it a direct fit in grooves engineered to that dimension. Typical installation environments include pumps, valves, fittings, and process equipment where the sealing surface sees temperatures from -75 degrees F to 400 degrees F. Hard-rated at 70 durometer, it holds its form under moderate compression loads without taking a permanent set.

Key Features

• PTFE-encapsulated construction combines PTFE chemical resistance with silicone core elasticity and recovery
• Seamless, uniform FEP-Teflon encapsulation completely encloses the core material
• Wide service temperature range: -75 degrees F to 400 degrees F
• Hardness rated at 70 durometer (Hard rating) for reliable compression sealing
• Round cross section with precise Dash 228 sizing for consistent groove fit
• Sold as individual units with a minimum order quantity of 1

Compatibility

Designed for use in any application requiring a standard Dash 228 o-ring groove, including pump housings, valve stems, and fluid system fittings that demand PTFE-level chemical resistance with elastomeric sealing performance.

Installation Notes

Plumbers, pipefitters, and mechanical service technicians typically install PTFE-encapsulated o-rings. Before installation, depressurize and drain the system fully, then clean the groove of debris, old sealant, and corrosion. Avoid using sharp tools that could nick or cut the FEP encapsulation, as surface damage will compromise the chemical barrier and sealing performance. Follow applicable IPC or system manufacturer guidelines for groove tolerances and compression ratios.