Value Collection ZMSCH70275 O-ring Dash 275 Nitrile 5-pack

Product Description

The VALUE COLLECTION ZMSCH70275 is a Dash 275 Nitrile Butadiene Rubber (Buna-N) O-ring with a round cross section, sold in a pack of 5. It measures 10.5 inches inside diameter, 10.75 inches outside diameter, and 0.125 inches thick. Rated at 70 Shore hardness, it handles temperatures from -40 degrees F to 250 degrees F and is compatible with petroleum-based media. Buna-N is the most widely used O-ring elastomer in trade applications, offering strong resistance to petroleum products, good compression set performance, and solid tear and abrasion resistance. Licensed plumbers, pipefitters, and fluid-system technicians reach for this material as a standard sealing solution across a wide range of industrial and mechanical assemblies.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, fuel and oil lines, and general plumbing connections where petroleum-fluid compatibility is required. The Dash 275 designation follows standard AS568 sizing, making it straightforward to cross-reference against existing system documentation. It is appropriate for both residential and light commercial service applications where a reliable, large-diameter face seal or static seal is needed. The pack quantity of 5 supports field technicians who require spares on hand for recurring maintenance tasks.

Key Features

• Buna-N (Nitrile Butadiene Rubber) material with excellent resistance to petroleum products
• Dash 275 standard sizing: 10.5 inches ID, 10.75 inches OD, 0.125 inches thick
• Operating temperature range: -40 degrees F to 250 degrees F
• 70 Shore hardness (Hard rating) for reliable compression sealing
• Round cross section for consistent seating in standard O-ring grooves
• Meets SAE and MIL-Spec standards
• Sold in a pack of 5 to support ongoing service needs

Compatibility

Compatible with petroleum-based fluids and products. Designed as a standard Dash 275 replacement O-ring for hydraulic, pneumatic, fuel, oil, and general fluid-system assemblies that specify Buna-N sealing material. Not recommended for use with ozone-generating environments or direct sunlight storage conditions.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or hydraulic technicians. Always depressurize and drain the system before replacing an O-ring to prevent injury and ensure a proper seal. Inspect the groove and mating surfaces for nicks, burrs, or contamination before seating the new ring. Avoid storing Buna-N O-rings near electric motors, ozone-generating equipment, or in direct sunlight, as ozone and UV exposure degrade nitrile rubber over time.