Value Collection ZMSCH70280 O-ring Dash 280 Buna-n

Product Description

The VALUE COLLECTION ZMSCH70280 is a Dash 280 O-ring manufactured from Buna-N (nitrile butadiene rubber), the most widely used elastomer in fluid sealing applications. It measures 14 inches inside diameter, 14.25 inches outside diameter, and 0.125 inches thick, with a round cross-section profile. Rated at 70 Shore A hardness, this O-ring delivers reliable compression set resistance along with strong tear and abrasion resistance. It is suited for static and dynamic sealing in systems that contact petroleum-based fluids. Plumbers, pipefitters, and industrial maintenance technicians install this type of seal in flanged pipe joints, valve bonnets, pump housings, and large-bore hydraulic assemblies.

This O-ring is designed for use in environments with petroleum product exposure, including hydraulic systems, fuel handling equipment, and industrial fluid circuits. Its operating temperature range spans -40 degrees F to 250 degrees F, making it appropriate for a wide range of commercial and industrial service conditions. It meets SAE and MIL-Spec standards, supporting use in demanding mechanical and government-specification applications. Sold in a package quantity of 5.

Key Features

• Buna-N (nitrile butadiene rubber) construction with excellent resistance to petroleum products
• 70 Shore A hardness rating for firm, reliable sealing under compression
• Round cross-section profile conforms to standard O-ring groove geometry
• Operating range of -40 degrees F to 250 degrees F suits a broad range of service environments
• Meets SAE and MIL-Spec standards
• Strong tear and abrasion resistance extends service life in dynamic applications

Compatibility

Compatible with petroleum-based fluids and products. Store away from direct sunlight and away from motors or other electrical equipment that may generate ozone, as ozone exposure degrades nitrile rubber. Not FDA approved for food-contact applications.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or industrial maintenance technicians. Shut down the system and relieve all pressure before removing or installing O-ring seals. Lightly lubricate the O-ring with a compatible fluid or assembly lubricant before seating it in the groove to prevent pinching or rolling during assembly. Inspect the groove and mating surfaces for nicks or burrs that could compromise the seal.