Value Collection ZMSCS70237 Silicone O-ring Dash 237 5-pack

Product Description

The VALUE COLLECTION ZMSCS70237 is a Dash 237 silicone O-ring designed for static and dynamic sealing applications across HVAC, plumbing, and industrial equipment. It measures 3.375 inches inside diameter, 3.625 inches outside diameter, and 0.125 inches thick with a round cross section. The silicone compound carries a Shore A hardness of 70 and is rated for a continuous service range of -80 degrees F to 450 degrees F, making it well suited for systems that cycle through extreme temperature swings or require sustained dry heat resistance. Each order includes five O-rings. Licensed trades and maintenance technicians install this part wherever a standard Dash 237 seal is specified.

This O-ring is appropriate for residential and commercial HVAC systems, plumbing assemblies, pool and spa equipment, and general industrial applications where exposure to wide temperature ranges, weather, and ozone is expected. It offers limited oil resistance and performs reliably with oils, chemicals, and solvents in lower-concentration environments. The white silicone compound provides good ozone and weathering resistance, making it a practical choice for outdoor-exposed equipment or units subject to UV and atmospheric aging.

Key Features

• Silicone compound rated -80 degrees F to 450 degrees F continuous service range
• Shore A hardness of 70 for a firm, reliable seal under compression
• Round cross section profile matches standard Dash 237 groove dimensions
• Resistant to weather, ozone, and dry heat
• Compatible with oils, chemicals, and solvents in appropriate concentrations
• Sold in a pack of 5 units per order

Compatibility

Designed as a standard Dash 237 O-ring replacement suitable for any groove or port machined to Dash 237 tolerances in HVAC, plumbing, pool, or industrial equipment.

Installation Notes

Shut off the relevant fluid or refrigerant circuit and relieve all system pressure before removing the old O-ring. Inspect the mating groove for nicks, corrosion, or debris that could compromise the seal. Apply a compatible lubricant to the O-ring before seating it to prevent pinching or rolling during assembly. Follow applicable codes such as ASME, IFGC, or IPC for the specific system type being serviced.