Value Collection ZMSCH70134 O-ring 1.875 in Id Buna-n Dash 134

Product Description

The VALUE COLLECTION ZMSCH70134 is a standard Dash 134 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in sealing applications. It features a 1.875-inch inside diameter, a 2.063-inch outside diameter, and a 0.0937-inch (3/32 inch) round cross-section thickness. Hardness is rated at 70 Shore A, classifying it as a hard durometer compound. The NBR compound delivers excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this part in fluid-handling and pneumatic sealing applications.

This O-ring is suited for use in systems where contact with petroleum products, hydraulic fluids, fuels, or oils is expected. Typical applications include pipe fittings, valve stems, pump housings, compressor assemblies, and hydraulic cylinder ports. It performs reliably across a working temperature range of -40 degrees F to 250 degrees F, making it appropriate for both refrigeration-adjacent and high-temperature fluid service environments. The black color is standard for Buna-N compound. This part should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone degrades NBR compounds.

Key Features

• Buna-N (NBR) compound — excellent resistance to petroleum products, hydraulic oils, and fuels
• 70 Shore A hardness for reliable compression set and sealing force
• Round cross-section conforms to Dash 134 sizing standard
• Operating range of -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Strong tear and abrasion resistance for extended service life

Compatibility

Designed to fit any groove or port machined to the Dash 134 O-ring standard, which specifies a 1.875-inch inside diameter and a 0.0937-inch cross-section. Compatible with systems handling petroleum-based fluids and products.

Installation Notes

Plumbers, HVAC technicians, and industrial mechanics install O-rings of this type as part of valve, fitting, or pump service. Before installation, shut off fluid supply and depressurize the system completely. Lubricate the O-ring with a compatible fluid or grease before seating to prevent rolling or nicking during assembly. Do not store unsealed O-rings in direct sunlight or near ozone-generating equipment such as electric motors.