Value Collection ZMSCH70202 O-ring Dash 202 Nitrile 100pk

Product Description

The VALUE COLLECTION ZMSCH70202 is a Dash 202 O-ring used to create leak-free seals in hydraulic, pneumatic, plumbing, and mechanical assemblies. Made from Nitrile Butadiene Rubber (Buna-N), this O-ring measures 0.25 inches inside diameter, 0.5 inches outside diameter, and 0.125 inches thick with a round cross section. It carries a hardness rating of 70 Shore A, which falls in the hard range and provides reliable compression set resistance. Licensed plumbers, HVAC technicians, and mechanical service professionals use this size in a wide range of fluid and gas sealing applications. Each package contains 100 O-rings.

This O-ring is suited for use with petroleum-based fluids and is commonly installed in hydraulic fittings, pneumatic valves, fuel system components, and general-purpose plumbing connections. The Buna-N compound performs across a temperature range of -40 degrees F to 250 degrees F, making it appropriate for both indoor mechanical equipment and outdoor service environments. It meets SAE and MIL-Spec standards, confirming suitability for industrial and trade applications.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products
• 70 Shore A hardness for reliable compression set and sealing performance
• Round cross section, Dash 202 designation: 0.25 inches ID, 0.5 inches OD, 0.125 inches thick
• Operating temperature range: -40 degrees F to 250 degrees F
• Tear and abrasion resistant compound for extended service life
• Meets SAE and MIL-Spec standards; package quantity of 100 units

Compatibility

Compatible with petroleum-based products and fluids. Designed for general-purpose sealing in hydraulic, pneumatic, plumbing, and mechanical assemblies requiring a Dash 202 O-ring with Buna-N elastomer. Not FDA approved; not recommended for applications requiring food-grade compliance.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or mechanical service professionals. Always depressurize and de-energize the system before replacing an O-ring. Inspect the groove and mating surfaces for damage or contamination before seating the new O-ring. Do not store Buna-N O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as this degrades the elastomer over time.