Value Collection ZMSCV70309 Viton O-ring Dash 309 15 Pack

Product Description

The VALUE COLLECTION ZMSCV70309 is a Dash 309 Viton fluoroelastomer O-ring engineered for static and dynamic sealing applications in fluid and pneumatic systems. It measures 0.438 inches inside diameter, 0.813 inches outside diameter, and 0.1875 inches thick with a round cross section. Rated for service from -15 degrees F to 400 degrees F, this O-ring delivers low compression set, high temperature resistance, and low gas permeability. The fluoroelastomer compound provides broad chemical compatibility, making it a dependable choice where petroleum-based media or elevated operating temperatures are present. Each package contains 15 O-rings.

This O-ring is suited for residential and commercial applications across HVAC, plumbing, hydraulic, and pneumatic systems anywhere a Dash 309 seal is specified. Typical uses include sealing refrigerant fittings, fuel system connections, hydraulic cylinders, and valve stems that contact petroleum products or operate at elevated temperatures. Its good vacuum service performance and low gas permeability make it appropriate for low-pressure and vacuum circuit service points as well. Plumbers, HVAC technicians, and hydraulic system technicians commonly stock this size for service and repair work.

Key Features

• Fluoroelastomer (Viton) compound rated from -15 degrees F to 400 degrees F
• Low compression set for reliable long-term sealing under sustained clamping loads
• Low gas permeability suitable for vacuum service applications
• Good resistance to petroleum products and a wide spectrum of chemicals
• Round cross section, Dash 309 standard sizing for drop-in replacement
• Pack of 15 O-rings for service stock or repair kits

Compatibility

Designed as a standard Dash 309 O-ring replacement compatible with petroleum products and systems requiring fluoroelastomer seals rated to 400 degrees F.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or hydraulic system technicians depending on the application. Always depressurize, deenergize, and purge the system before replacing any seal. Inspect the gland groove for damage or debris before seating the O-ring, and lubricate with a compatible fluid to prevent tearing during assembly. Do not roll or twist the O-ring into the groove.