Value Collection ZMSCH70260 O-ring Dash 260 Buna-n

Product Description

The VALUE COLLECTION ZMSCH70260 is a Dash 260 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, sized at 6.5 inches inside diameter, 6.75 inches outside diameter, and 0.125 inches thick. Rated at 70 durometer (hard), it delivers strong resistance to petroleum-based fluids, oils, and fuels. Its round cross section provides consistent compression set and reliable sealing under pressure. The temperature range of -40 degrees F to 250 degrees F makes it suitable for a wide range of service environments. HVAC technicians, plumbers, and mechanical contractors install this type of O-ring in fluid and gas system connections where a dependable static or dynamic seal is required.

This O-ring is suited for use in residential and commercial applications involving petroleum-based media, including hydraulic systems, fuel lines, pumps, valves, and pipe fittings. Its Buna-N compound is the most widely used O-ring elastomer in trade applications. Sold in packages of 10, it is appropriate for stocking in service vans or shop inventory where this dash size is a recurring need. It meets SAE and MIL-Spec standards, supporting use in both commercial HVAC and general mechanical service work.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent resistance to petroleum products, oils, and fuels
• 70 durometer hardness rating for reliable compression set and sealing force
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross section for consistent sealing geometry in standard O-ring grooves
• Meets SAE and MIL-Spec standards
• Sold in a package of 10 pieces (minimum order quantity: 1 package)

Compatibility

Designed for use with petroleum-based products and compatible fluids. Suitable as an OEM-style replacement or service seal in hydraulic, fuel, plumbing, and HVAC applications that call for a Dash 260 Buna-N O-ring. Not approved for FDA-regulated food or pharmaceutical contact applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or mechanical contractors. Before replacing an O-ring, depressurize and drain the system completely to eliminate fluid or gas exposure at the sealing point. Inspect the groove and mating surfaces for nicks, corrosion, or debris that could compromise the new seal. Store unused O-rings away from direct sunlight, ozone sources, and electrical equipment that may generate ozone, as these conditions degrade nitrile elastomers over time.