Value Collection ZMSCS70239 Silicone O-ring Dash 239 5-pack

Product Description

The VALUE COLLECTION ZMSCS70239 is a Dash 239 silicone O-ring with a round cross section, designed to provide reliable static and dynamic sealing in applications that demand a wide service temperature range. This ring measures 3.625 inches inside diameter, 3.875 inches outside diameter, and 0.125 inches thick. With a Shore A hardness of 70, it holds its shape under compression while remaining pliable enough for consistent sealing. Silicone construction gives this O-ring good dry heat resistance, weather resistance, and ozone resistance, making it a dependable choice for HVAC, plumbing, pool, and light industrial service work. Each package contains 5 rings.

This O-ring is suited for residential and commercial sealing applications where exposure to wide temperature swings, outdoor weathering, or ozone is a concern. Common install scenarios include pump housings, valve stems, filter housings, and equipment access covers in HVAC and pool systems. It is compatible with oils, chemicals, and solvents at moderate concentrations. Limited oil resistance should be factored into any high-oil-exposure application. Trade installers typically select this ring as a field replacement or service-kit component when working on equipment with Dash 239 groove specifications.

Key Features

• Silicone material rated from -80 degrees F to 450 degrees F for wide temperature service
• Shore A hardness of 70 (hard rating) for reliable compression sealing
• Round cross section at 0.125 inches thick for standard Dash 239 groove fitment
• Good weather and ozone resistance for outdoor or exposed installations
• Compatible with oils, chemicals, and solvents in low-to-moderate concentrations
• Packaged in a quantity of 5 rings per order unit

Compatibility

Designed as a standard Dash 239 O-ring replacement for any groove dimensioned to accept a 3.625 inches ID by 3.875 inches OD by 0.125 inches cross-section seal.

Installation Notes

O-ring replacement is typically performed by licensed plumbers, HVAC technicians, or pool service professionals. Always de-energize equipment and relieve system pressure before disassembling any fitting or housing. Inspect the groove for nicks or corrosion before seating the new ring, and avoid stretching the ring beyond its natural diameter during installation. Lubricants compatible with silicone compounds may be used to aid installation where the application allows.