Value Collection ZMSCS70339 Silicone O-ring Dash 339 5-pack

Product Description

The VALUE COLLECTION ZMSCS70339 is a round cross-section silicone O-ring packaged in a quantity of 5, designed for static and dynamic sealing applications across plumbing, HVAC, and industrial systems. It carries a Dash 339 designation with an inside diameter of 3.25 inches, an outside diameter of 3.625 inches, and a thickness of 0.1875 inches. The silicone compound provides a wide service temperature range, from -80 degrees F to 450 degrees F, along with solid resistance to dry heat, weathering, and ozone exposure. Licensed trades and maintenance professionals install this O-ring wherever a reliable face or radial seal is required.

This O-ring is suited for use in residential and commercial plumbing, HVAC equipment, and general mechanical assemblies that involve oils, chemicals, or solvents. Its silicone material performs well in applications that cycle through extreme temperature swings or are exposed to outdoor ambient conditions. The Dash 339 standard size makes it a straightforward drop-in replacement for worn or failed seals in similarly rated equipment. The pack quantity of 5 supports service calls where multiple seals may need replacement or where a job-site stock is preferred.

Key Features

• Silicone compound rated from -80 degrees F to 450 degrees F for wide temperature range service
• Dash 339 standard designation: 3.25 inches ID, 3.625 inches OD, 0.1875 inches thick
• Round cross-section profile for consistent compression and sealing
• Good weather and ozone resistance for outdoor or exposed installations
• Compatible with oils, chemicals, and solvents in typical mechanical sealing environments
• Sold in a pack of 5 to support multi-point service or field stock

Compatibility

Designed as a standard Dash 339 silicone O-ring replacement suitable for plumbing, HVAC, and general mechanical sealing applications requiring a 3.25-inch inside diameter seal.

Installation Notes

Installation should be performed by a qualified technician following applicable plumbing or mechanical codes. Always depressurize and drain the system before removing or replacing any O-ring seal. Inspect the mating groove and sealing surfaces for wear, scoring, or debris before installing the new O-ring. Avoid twisting or over-stretching the O-ring during installation to preserve its sealing integrity.