Value Collection ZMSCH70322 O-ring Dash 322 Nbr 70

Product Description

The VALUE COLLECTION ZMSCH70322 is a Dash 322 Nitrile Butadiene Rubber (NBR) O-ring with a round cross section, measuring 1.25 inches inside diameter, 1.625 inches outside diameter, and 0.1875 inches thick. Rated at 70 durometer (hard), this Buna-N elastomer is the most widely used O-ring material in fluid sealing applications. It delivers excellent resistance to petroleum-based products, strong compression set performance, and solid tear and abrasion resistance. Plumbers, HVAC technicians, and hydraulic system mechanics rely on this O-ring for reliable sealing in oil, fuel, and water service applications.

This O-ring is suited for use in residential and commercial plumbing, HVAC refrigerant circuits, hydraulic systems, and pneumatic assemblies where contact with petroleum products is expected. The Dash 322 sizing is a standard AS568 dimension, making it a common replacement in fittings, valves, pumps, and manifolds across a wide range of trade and industrial equipment. Sold in packages of 50, it is well-suited for service technicians who need bench stock for routine maintenance calls.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent petroleum product resistance
• 70 durometer hardness rating for firm, reliable sealing under compression
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross section conforms to standard AS568 Dash 322 dimensions
• Meets SAE and MIL-Spec standards
• Resistant to tear and abrasion; suitable for dynamic and static sealing applications

Compatibility

Compatible with petroleum products and petroleum-based fluids. Designed as a standard Dash 322 AS568 O-ring replacement for use in fittings, valves, pumps, and related components that accept a 1.25-inch ID round-cross-section O-ring. Not FDA approved. Should not be used in direct sunlight exposure or near ozone-generating equipment such as electric motors.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics. Shut off fluid supply and relieve system pressure fully before replacing any O-ring. Clean the groove and mating surfaces before seating the new ring. Avoid rolling or twisting the O-ring during installation to prevent premature failure.