Value Collection ZMSCV70371 Viton O-ring Dash 371

Product Description

The VALUE COLLECTION ZMSCV70371 is a Dash 371 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications that demand chemical resistance and wide temperature tolerance. With an inside diameter of 8.5 inches, an outside diameter of 8.875 inches, and a cross-section thickness of 0.1875 inches, this O-ring fits large-bore connections commonly found in HVAC, plumbing, and industrial fluid systems. The round cross-section profile seats cleanly in standard groove cuts. At 70 durometer hardness, it balances flexibility and compression resistance. It is typically installed by licensed plumbers, HVAC technicians, and industrial maintenance professionals.

This O-ring is suited for sealing applications involving petroleum-based fluids, hydraulic oils, fuels, and similar hydrocarbons. The fluoroelastomer compound maintains a reliable seal across a working temperature range of -15 degrees F to 400 degrees F, making it appropriate for high-temperature fluid systems and vacuum service applications. Its low gas permeability makes it a dependable choice where gas-tight seals are required, including refrigerant circuits and pressurized fluid lines. The Dash 371 designation follows AS568 standard sizing, allowing straightforward cross-referencing to groove specifications.

Key Features

• Fluoroelastomer (Viton) compound provides strong resistance to petroleum products and a wide spectrum of chemicals
• Working temperature range of -15 degrees F to 400 degrees F suits high-heat and cryogenic-adjacent applications
• 70 durometer hardness rating delivers low compression set over extended service cycles
• Round cross-section conforms to standard AS568 Dash 371 groove geometry
• Low gas permeability makes it suitable for vacuum service and pressurized gas containment
• Sold in a package quantity of 2

Compatibility

Designed to fit any application calling for an AS568 Dash 371 O-ring with an 8.5-inch inside diameter, 8.875-inch outside diameter, and 0.1875-inch cross-section thickness. Compatible with petroleum products and systems where fluoroelastomer seals are specified.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified mechanical tradespeople. Always depressurize and drain the system before removing or replacing any O-ring seal. Inspect the groove for burrs, scoring, or contamination before seating the new O-ring. Lubricate with a compatible grease or fluid specified for fluoroelastomer compounds to aid installation and prevent damage during assembly.