Value Collection ZMSCV70259 Viton O-ring Dash 259

Product Description

The VALUE COLLECTION ZMSCV70259 is a Dash 259 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications that demand chemical resistance and wide temperature range performance. With a 6.25-inch inside diameter, 6.5-inch outside diameter, and a 0.125-inch round cross section, this O-ring is rated for continuous service from -15 degrees F to 400 degrees F. The 70-durometer hardness rating delivers low compression set and reliable sealing under sustained load. Sold in a package of two.

This O-ring is suited for use in HVAC, plumbing, pool, and industrial fluid systems where exposure to petroleum-based fluids, fuels, or elevated temperatures is a regular service condition. Fluoroelastomer construction provides broad chemical compatibility and low gas permeability, making it appropriate for vacuum service and pressurized fluid circuits. Plumbers, HVAC technicians, and industrial maintenance professionals commonly install this size in pump housings, valve bodies, flanged connections, and manifold assemblies.

Key Features

• Fluoroelastomer (Viton) construction with 70-durometer hardness for low compression set and long service life
• Temperature range of -15 degrees F to 400 degrees F for high-heat and refrigeration-adjacent applications
• Good resistance to petroleum products, fuels, and a wide spectrum of chemical media
• Low gas permeability suitable for vacuum service and gas-handling circuits
• Round cross section in standard Dash 259 sizing for drop-in replacement across grooved sealing surfaces
• Package quantity of two units per order

Compatibility

Designed as a standard Dash 259 O-ring replacement compatible with grooved sealing surfaces calling for a 6.25-inch ID, 6.5-inch OD, 0.125-inch cross section fluoroelastomer seal in petroleum-fluid or high-temperature service.

Installation Notes

Shut off and depressurize the system before removing the old O-ring and inspect the groove and mating surface for scoring or corrosion prior to installation. Apply a thin film of a compatible lubricant to the O-ring before seating it to prevent twisting and tearing during assembly. Do not use petroleum-based grease unless confirmed compatible with the system fluid and the fluoroelastomer compound. Work follows applicable plumbing and mechanical codes including the IPC and relevant ASME sealing standards.