Value Collection ZMSCV70903 Viton O-ring Dash 903 25-pack

Product Description

The VALUE COLLECTION ZMSCV70903 is a Dash 903 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing in fluid and gas systems. It features a round cross section measuring 0.301 inches inside diameter, 0.429 inches outside diameter, and 0.064 inches thick. Rated for service from -15 degrees F to 400 degrees F, this O-ring delivers low compression set and high temperature resistance. Its fluoroelastomer compound provides wide chemical compatibility and low gas permeability, making it suitable for vacuum service applications. Each package contains 25 O-rings. Licensed HVAC techs, plumbers, and pipefitters are the typical installers.

This O-ring functions as a boss gasket for straight-thread tube fittings, commonly used in hydraulic, pneumatic, fuel, and refrigerant line connections where resistance to petroleum products is required. Its black fluoroelastomer construction suits residential and commercial installations wherever elevated temperatures or aggressive fluid contact rule out standard NBR or EPDM compounds. The Dash 903 designation follows standard O-ring sizing and allows direct cross-referencing with most industry sizing charts.

Key Features

• Fluoroelastomer (Viton) material for superior heat and chemical resistance
• Rated from -15 degrees F to 400 degrees F continuous service temperature
• Round cross section; functions as O-ring boss gasket for straight-thread tube fittings
• Low compression set and low gas permeability — suitable for vacuum service
• Good resistance to petroleum products and a wide spectrum of chemical compatibility
• Sold in a package of 25 pieces (minimum order quantity: 1 package)

Compatibility

Designed as a Dash 903 O-ring boss gasket for straight-thread tube fittings in systems handling petroleum products, hydraulic fluids, fuels, and refrigerants where fluoroelastomer sealing material is specified.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or pipefitters. Always depressurize and de-energize the system and purge any residual fluid before replacing O-rings in fluid or refrigerant lines. Inspect the seating surface for nicks or corrosion before installing a new O-ring. Do not reuse a compressed or damaged O-ring; replace with a new piece from this package.