Value Collection ZMSCH90128 O-ring 1.5 in Id Nbr Dash 128

Product Description

The VALUE COLLECTION ZMSCH90128 is a Dash 128 Nitrile Butadiene Rubber (Buna-N) O-ring rated at 90 durometer for extra-hard compression sealing applications. It measures 1.5 inches inside diameter, 1.688 inches outside diameter, and 0.094 inches thick with a round cross section. The black NBR compound delivers excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. This package contains 50 O-rings, making it a practical bench or field stock quantity for plumbing, hydraulic, pneumatic, and fuel system service work. Licensed tradespeople and maintenance technicians reaching for a dependable general-purpose elastomer seal will find the Buna-N compound the most widely used O-ring material in industrial and mechanical service.

This O-ring is suited for use in residential and commercial plumbing systems, hydraulic fittings, pneumatic assemblies, fuel lines, and other applications where exposure to petroleum products is expected. The -40 to 250 degrees F operating range covers most standard mechanical and HVAC-adjacent fluid system environments. It conforms to SAE and MIL-Spec standards, positioning it for both commercial maintenance and light industrial repair contexts. Store away from direct sunlight, ozone sources, and electrical equipment that may generate ozone to preserve elastomer integrity.

Key Features

• Buna-N (NBR) compound with excellent petroleum product resistance
• 90 durometer extra-hard hardness rating for high-compression sealing
• Operating temperature range of -40 to 250 degrees F
• Round cross section, Dash 128 designation per SAE and MIL-Spec standards
• Black color; 1.5 inches ID, 1.688 inches OD, 0.094 inches thick
• Packaged in quantities of 50 for bench stock or field kit replenishment

Compatibility

Compatible with petroleum-based fluids and oils. Designed as a standard Dash 128 O-ring replacement for use in hydraulic, pneumatic, plumbing, and fuel system assemblies calling for a 1.5-inch inside-diameter Buna-N seal. Not FDA approved; not recommended for food-contact or ozone-heavy environments.

Installation Notes

Installation is typically performed by licensed plumbers, hydraulic technicians, or maintenance mechanics. Depressurize and drain the system fully before removing the old O-ring and seating the replacement. Lightly lubricate the O-ring with a compatible fluid prior to installation to prevent rolling or tearing during assembly. Do not expose Buna-N O-rings to ozone-generating equipment or direct UV light during storage or service.