Value Collection ZMSCV70279 Viton O-ring Dash 279

Product Description

The VALUE COLLECTION ZMSCV70279 is a Dash 279 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications where high-temperature resistance and chemical compatibility are required. It measures 13 inches inside diameter, 13.25 inches outside diameter, and 0.125 inches thick, with a round cross section and a Shore hardness of 70. The fluoroelastomer compound delivers low compression set, good vacuum-service performance, and low gas permeability. This O-ring is well suited for HVAC, plumbing, and industrial fluid-handling systems where petroleum-based media, elevated temperatures, or demanding chemical environments are present.

This O-ring fits sealing applications in systems that handle petroleum products and related fluids. Its rated operating temperature range of -15 degrees F to 400 degrees F makes it appropriate for both heating-side and high-temperature process-fluid applications. Plumbers, HVAC technicians, and industrial maintenance professionals install this part wherever a large-diameter, high-performance elastomeric seal is specified. The Dash 279 designation aligns with AS568 standard sizing, allowing straightforward cross-reference to OEM seal specifications on pumps, flanges, manifolds, and large-bore fittings.

Key Features

• Fluoroelastomer (Viton) compound resists petroleum products, fuels, and a wide spectrum of chemicals
• Rated from -15 degrees F to 400 degrees F for high-temperature service
• Low compression set helps maintain long-term sealing force under sustained load
• Suitable for vacuum service with low gas permeability
• Round cross section, 0.125 inches thick, conforms to AS568 Dash 279 sizing
• Shore hardness 70, rated Hard, providing firm seat engagement in metal grooves

Compatibility

Designed as an OEM-style replacement or service O-ring for large-bore sealing applications requiring an AS568 Dash 279 fluoroelastomer seal in equipment handling petroleum products or operating at elevated temperatures.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or industrial mechanic. Depressurize and drain the system completely before removing the old seal. Inspect the groove for nicks, burrs, or corrosion that could compromise the new seal. Lubricate the O-ring with a compatible lubricant before seating, and avoid twisting or rolling the ring during installation.