Value Collection ZMSCV70354 Viton O-ring Dash 354

Product Description

The VALUE COLLECTION ZMSCV70354 is a Dash 354 Viton (fluoroelastomer) O-ring used to create a reliable fluid-tight or gas-tight seal in high-temperature and chemically demanding service environments. It measures 5.125 inches inside diameter, 5.5 inches outside diameter, and 0.1875 inches thick, with a round cross section. The 70-durometer hardness provides a firm compression seal while maintaining low compression set over repeated thermal cycles. HVAC technicians, plumbers, pipefitters, and industrial mechanics install this O-ring anywhere a petroleum-resistant, high-temperature elastomeric seal is required.

This O-ring is suited for residential and commercial mechanical systems where contact with petroleum-based fluids, oils, fuels, or hydraulic media is expected. The fluoroelastomer compound handles continuous service from -15 degrees F to 400 degrees F, making it appropriate for hot-side plumbing connections, refrigeration service valves, pump housings, compressor assemblies, and vacuum service applications. Its low gas permeability makes it a practical choice for sealed systems where gas migration through the elastomer is a concern.

Key Features

• Fluoroelastomer (Viton) compound with good resistance to petroleum products and a wide spectrum of chemical compatibility
• Operating temperature range of -15 degrees F to 400 degrees F for high-heat service environments
• 70-durometer hardness rating for firm, low-compression-set sealing performance
• Low gas permeability suitable for vacuum service and sealed gas applications
• Round cross section, Dash 354 standard sizing for straightforward groove fitment
• Black color; package quantity of 2 per order unit

Compatibility

Designed as a standard Dash 354 O-ring replacement for grooves requiring a 5.125-inch ID, 5.5-inch OD, and 0.1875-inch cross section in systems compatible with fluoroelastomer seals and petroleum-based media.

Installation Notes

De-energize or depressurize the system and allow all components to reach ambient temperature before removing or replacing O-rings. Inspect the mating groove for nicks, burrs, or corrosion that could compromise the seal before installing the new ring. Avoid using petroleum-based lubricants incompatible with the mating material; a light application of compatible assembly lubricant eases installation and reduces the risk of tearing the O-ring during seating. Follow applicable codes and manufacturer torque guidance for the fitting or housing being serviced.