Value Collection ZMSCH90229 O-ring Dash 229 Nbr 90 Duro 50pk

Product Description

The VALUE COLLECTION ZMSCH90229 is a Dash 229 Nitrile Butadiene Rubber (NBR) O-ring sized at 2.375 inches inside diameter, 2.625 inches outside diameter, and 0.125 inches thick. Rated at 90 durometer (extra hard), this O-ring delivers firm sealing force with excellent resistance to petroleum-based fluids and fuels. The round cross section and precise dimensional tolerances make it a reliable choice for static and dynamic sealing applications in fluid and pneumatic systems. Licensed plumbers, HVAC technicians, and fluid-system mechanics commonly install this part during pump, valve, and fitting service.

This O-ring is suited for residential and commercial applications where contact with petroleum products, hydraulic fluids, or oils is expected. Its temperature range of -40 to 250 degrees F covers most HVAC, plumbing, and light industrial service conditions. Each package contains 50 O-rings, making it practical for shop stock or multi-unit service calls. Buna-N material is the most widely used O-ring elastomer in trade work due to its balance of compression set resistance, tear resistance, and abrasion resistance.

Key Features

• Dash 229 standard sizing: 2.375 inches ID, 2.625 inches OD, 0.125 inches thick
• 90 durometer extra-hard rating for firm sealing under pressure
• Nitrile Butadiene Rubber (Buna-N) construction with excellent petroleum product resistance
• Operating temperature range: -40 to 250 degrees F
• Round cross section for consistent groove fit and sealing performance
• Meets SAE and MIL-Spec standards
• Package quantity of 50 units for efficient shop stocking

Compatibility

Compatible with systems and components that contact petroleum products, hydraulic fluids, and similar media. Designed as a standard Dash 229 O-ring replacement for valves, pumps, fittings, and fluid couplings requiring a 2.375-inch ID seal. Not FDA approved; not recommended for food-contact or potable-water applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or fluid-system mechanics. Always depressurize and de-energize the system before removing the old O-ring. Inspect the groove for nicks, corrosion, or debris before seating the new O-ring. Do not store unused O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as this degrades NBR material over time.