Value Collection ZMSCH70050 O-ring Dash 050 Nbr 5.25 in Id

Product Description

The VALUE COLLECTION ZMSCH70050 is a Dash 050 Nitrile Butadiene Rubber (NBR/Buna-N) o-ring with a round cross section, designed for static and dynamic sealing applications across plumbing, hydraulic, and fluid-handling systems. It measures 5.25 inches inside diameter, 5.375 inches outside diameter, and 0.0625 inches thick. The compound is rated at 70 Shore A hardness and carries an operating temperature range of -40 degrees F to 250 degrees F. Licensed plumbers, pipefitters, and hydraulic technicians install this style of o-ring when servicing valves, pumps, flanges, and couplings that contact petroleum-based fluids or lubricants.

This o-ring is suited for residential and commercial fluid systems where petroleum product compatibility is required. Typical install scenarios include pump seal replacement, valve bonnet sealing, and hydraulic cylinder service. The Buna-N compound is the most widely used elastomer in industrial and trade sealing applications and performs reliably in environments involving oils, fuels, and petroleum-based hydraulic fluids. It is sold in packages of 10 units, making it practical for service trucks and shop stock.

Key Features

• Buna-N (NBR) compound offers excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides reliable compression set and long service life
• Operating range of -40 degrees F to 250 degrees F suits most HVAC, plumbing, and hydraulic environments
• Round cross section for consistent sealing in standard o-ring grooves
• Tear and abrasion resistance supports both static and dynamic sealing applications
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products, oils, and petroleum-based hydraulic fluids. Not recommended for ozone-rich environments; store away from direct sunlight, motors, and electrical equipment that may generate ozone. Not FDA approved.

Installation Notes

Isolate and depressurize the system completely before removing any seals or fittings. Inspect the mating groove for burrs, nicks, or damage before installing the new o-ring. Lightly lubricate the o-ring with a compatible petroleum-based grease to ease installation and prevent tearing. Follow applicable IPC or hydraulic system manufacturer guidelines for groove tolerances and assembly torque.