Value Collection TES70230 O-ring Dash 230 Ptfe Silicone

Product Description

The VALUE COLLECTION TES70230 is a Dash 230 O-ring constructed with polytetrafluoroethylene (PTFE)-encapsulated silicone, designed for sealing applications that demand broad chemical resistance and wide temperature tolerance. The encapsulation consists of a seamless, uniform FEP-PTFE outer shell that completely encloses a silicone elastomer core. This construction delivers the chemical and temperature resistance of solid PTFE while retaining the elasticity and compression recovery of a conventional elastomer O-ring. The ring measures 2.5 inches inside diameter, 2.75 inches outside diameter, and 0.125 inches in cross-section thickness, with a round cross-section profile and a hardness rating of 70 Shore. It is installed by plumbers, pipefitters, HVAC technicians, and industrial mechanics.

This O-ring suits static and low-dynamic sealing applications where aggressive media, steam, solvents, or wide thermal cycling would degrade standard nitrile or EPDM seals. Typical installations include flanged connections, valve seats, pump housings, and process fluid fittings in commercial, industrial, and mechanical systems. The Dash 230 designation corresponds to a standardized AS568 cross-section and diameter combination, making it a direct dimensional fit wherever that dash number is specified in engineering drawings or maintenance documentation.

Key Features

• Seamless FEP-PTFE encapsulation fully encloses the silicone core for uniform chemical resistance
• Rated from -75 degrees F to 400 degrees F continuous service temperature
• Round cross-section with 0.125-inch thickness and Dash 230 dimensional designation
• Matches chemical resistance of solid PTFE O-rings while offering elastomeric recovery
• Hardness rated Hard (70 Shore) for firm, reliable groove seating
• Sold as a single unit with a minimum order quantity of 1

Compatibility

Designed as an OEM-style replacement or maintenance-stock O-ring for any application specifying a Dash 230 O-ring with a 2.5-inch inside diameter, 2.75-inch outside diameter, and 0.125-inch cross-section thickness per AS568 standards.

Installation Notes

Power down or isolate the system and relieve all pressure before removing the old seal or installing the replacement. Inspect the groove for scoring, corrosion, or dimensional damage before seating the new ring. Because PTFE encapsulation is less forgiving of sharp edges than solid elastomers, ensure the groove edges and mating surfaces are deburred and clean. Installation typically requires no special tooling beyond a clean, lint-free installation surface and appropriate thread or flange torque procedures per the equipment manufacturer's specifications.