Value Collection ZMSCH70034 O-ring Dash 034 Nbr Pack of 100

Product Description

The VALUE COLLECTION ZMSCH70034 is a Dash 034 Nitrile Butadiene Rubber (NBR) O-ring with a 2.125-inch inside diameter, 2.25-inch outside diameter, and a 0.0625-inch cross-section thickness. Buna-N is the most widely used O-ring elastomer in trade applications, valued for its excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. This O-ring features a round cross-section profile and a Shore A hardness of 70, classifying it as a hard-durometer seal. It is sold in a package of 100 units. Licensed plumbers, HVAC technicians, and mechanical contractors commonly use this size in hydraulic, pneumatic, and fluid-handling assemblies.

This O-ring is suited for residential and commercial applications where petroleum-product compatibility is required. Typical install scenarios include pump seals, valve bodies, fittings, and fluid connectors in HVAC, plumbing, and general mechanical systems. The Buna-N compound performs across a wide temperature range, making it appropriate for both indoor and outdoor service conditions within rated limits. Compatible materials include petroleum-based oils, fuels, and hydraulic fluids commonly found in mechanical trade systems.

Key Features

• Buna-N (NBR) elastomer offers excellent resistance to petroleum products and hydraulic fluids
• Round cross-section profile ensures consistent seating and reliable compression seal
• Shore A hardness of 70 provides a hard-durometer rating suitable for higher-pressure sealing applications
• Rated from -40 degrees F to 250 degrees F for broad temperature service range
• Meets SAE and MIL-Spec standards for quality and dimensional consistency
• Package quantity of 100 units supports job-site stocking and service fleet inventory

Compatibility

Compatible with petroleum products including oils, fuels, and hydraulic fluids. Not recommended for use with ozone-generating environments, direct sunlight exposure, or electrical equipment that may produce ozone. Designed as a standard Dash 034 O-ring replacement for plumbing, HVAC, and mechanical fluid-handling assemblies requiring a 2.125-inch ID NBR seal.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or mechanical contractors depending on the host system. Always depressurize and isolate the fluid circuit before removing or installing O-rings. Inspect the gland and mating surfaces for nicks or corrosion prior to seating the new O-ring. Do not store Buna-N O-rings near motors, ozone-generating equipment, or in direct sunlight, as ozone and UV exposure degrade NBR compound over time.