Value Collection ZMSCH70160 O-ring Dash 160 Nitrile 70A

Product Description

The VALUE COLLECTION ZMSCH70160 is a Dash 160 Buna-N (nitrile butadiene rubber) O-ring with a 5.25-inch inside diameter, a 5.438-inch outside diameter, and a round cross section measuring 0.0937 inches thick. Rated at 70 Shore A hardness, this O-ring is engineered for static and dynamic sealing applications in systems that handle petroleum-based fluids and lubricants. It operates reliably across a temperature range of -40 degrees F to 250 degrees F. Installation is handled by plumbers, pipefitters, and industrial maintenance technicians working on fluid-handling assemblies.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, pumps, valves, and pipe fittings where petroleum product compatibility is required. The 70 durometer hardness provides a balance of compression set resistance and flexibility, making it a common choice in both industrial and commercial plumbing and HVAC applications. It meets SAE and MIL-Spec standards. Sold in packages of 25, with a minimum order quantity of 1.

Key Features

• Buna-N (nitrile) material offers excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating balances sealing load with flexibility
• Round cross section for consistent sealing in standard O-ring grooves
• Operating temperature range of -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards for dimensional and material compliance
• Tear and abrasion resistance for durability in dynamic sealing applications

Compatibility

Designed as a Dash 160 standard O-ring for use in systems compatible with Buna-N elastomers, including those handling petroleum products, hydraulic oils, and general lubricants. Not recommended for use with ozone-generating environments, direct sunlight exposure, or incompatible solvents.

Installation Notes

Plumbers, pipefitters, and hydraulic technicians install O-rings of this type during assembly or service of valves, pumps, and fittings. Always depressurize and isolate the system before removing or replacing seals. Inspect the mating groove for burrs, corrosion, or damage before installation. Avoid overstretching the O-ring during placement, and do not store unused rings near motors, ozone sources, or in direct sunlight.