Value Collection TES70217 Dash 217 Ptfe Silicone O-ring

Product Description

The VALUE COLLECTION TES70217 is a Dash 217 PTFE-encapsulated silicone o-ring designed for sealing applications that demand both chemical resistance and elastomeric recovery. The ring features a seamless, uniform FEP-encapsulated shell that completely encloses a silicone elastomer core, combining the chemical and temperature resistance of solid PTFE with the flexibility and compression set recovery of silicone. With a hardness rating of 70 and a round cross section, this o-ring suits demanding fluid and gas sealing tasks in plumbing, HVAC, and industrial process systems. Licensed tradespeople and maintenance professionals specify this type of seal where standard rubber o-rings fail due to chemical exposure or temperature extremes.

This o-ring fits applications requiring a Dash 217 standard seal with an inside diameter of 1.188 inches, an outside diameter of 1.438 inches, and a thickness of 0.125 inches. The PTFE-encapsulated construction handles continuous service from -75 degrees F to 400 degrees F, making it appropriate for hot water, steam-adjacent, and chemically aggressive fluid systems found in commercial plumbing, process piping, and HVAC refrigerant or chemical feed lines. It is sold individually and is intended for direct replacement or new installation use by qualified trade professionals.

Key Features

• FEP encapsulation completely encloses the silicone core for full chemical resistance on all exposed surfaces
• Matches the chemical and temperature resistance of solid PTFE o-rings
• Retains elastomeric compression set recovery unlike solid PTFE seals
• Rated from -75 degrees F to 400 degrees F continuous service temperature
• Round cross section with 70 hardness rating for consistent sealing under compression
• Seamless and uniform encapsulation construction prevents core exposure at the parting line

Compatibility

Designed as an OEM-style replacement or new-installation seal for Dash 217 o-ring grooves in plumbing, HVAC, and process piping applications where PTFE-level chemical resistance and silicone elasticity are both required.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or pipefitters. Shut off and depressurize the system fully before removing the old seal and installing the replacement. Inspect the groove for nicks, corrosion, or debris that could compromise the seal surface. Avoid twisting or stretching the o-ring during installation, as distortion of the FEP encapsulation can create leak paths.