Value Collection ZMSCV70221 Viton O-ring Dash 221 Pack 50

Product Description

The VALUE COLLECTION ZMSCV70221 is a Dash 221 Viton fluoroelastomer O-ring designed for static and dynamic sealing applications across HVAC, plumbing, hydraulic, and industrial fluid systems. Measuring 1.438 inches inside diameter, 1.688 inches outside diameter, and 0.125 inches thick with a round cross section, this O-ring is manufactured to a Shore A hardness of 70. The fluoroelastomer compound delivers reliable performance across a wide temperature range of -15 degrees F to 400 degrees F, making it a dependable choice for high-heat and chemically demanding service environments. Licensed trades and maintenance technicians install these in valve bodies, fittings, pump housings, and manifold assemblies. This listing includes a package quantity of 50 rings.

This O-ring suits residential and commercial applications where exposure to petroleum-based fluids, fuels, lubricants, and a broad spectrum of chemicals is expected. The fluoroelastomer material provides low gas permeability, making it appropriate for vacuum service as well as pressurized fluid containment. Typical installation scenarios include replacement sealing in refrigeration service valves, hydraulic cylinders, fuel system fittings, and industrial fluid handling equipment. The Dash 221 designation is a standard AS568 size, widely referenced across OEM service manuals and engineering drawings in HVAC, plumbing, and mechanical trades.

Key Features

• Fluoroelastomer (Viton) compound rated from -15 degrees F to 400 degrees F
• Dash 221 standard AS568 size: 1.438 inches ID, 1.688 inches OD, 0.125 inches thick
• Shore A hardness of 70 for a hard, low-compression-set seal
• Good resistance to petroleum products, fuels, and a wide spectrum of chemicals
• Low gas permeability suitable for vacuum service applications
• Round cross section for consistent seating in standard O-ring grooves
• Package of 50 rings for shop stock or service inventory

Compatibility

Compatible with petroleum products and a wide range of chemical media. Designed as a standard Dash 221 AS568 fluoroelastomer O-ring for use in valve assemblies, pump housings, fittings, and manifolds requiring high-temperature or chemical-resistant sealing.

Installation Notes

De-energize and depressurize the system fully before removing the old O-ring or installing the replacement. Inspect the groove for nicks, burrs, or debris that could damage the new ring or cause leakage. Lightly lubricate the O-ring with a compatible fluid or grease before seating to reduce installation stress and prevent rolling in the groove. Confirm the replacement dash number and cross-section dimensions match the original specification before torquing the fitting or reassembling the assembly.