Value Collection ZMSCH90146 O-ring Dash 146 Nbr 90 Duro

Product Description

The VALUE COLLECTION ZMSCH90146 is a Dash 146 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 2.625 inches inside diameter, 2.8130 inches outside diameter, and 0.0937 inches thick with a round cross section. The compound is rated at 90 durometer, placing it in the extra hard hardness category. Its operating temperature range spans -40 degrees F to 250 degrees F, making it suitable for demanding environments. Licensed HVAC technicians, plumbers, pipefitters, and mechanical contractors install these seals routinely in systems handling petroleum-based fluids and lubricants.

This O-ring is suited for static and dynamic sealing applications in hydraulic systems, pneumatic assemblies, pumps, valves, and fluid fittings where contact with petroleum products is expected. The Buna-N compound delivers excellent resistance to petroleum-based fluids, oils, and fuels, along with strong compression set resistance and good tear and abrasion resistance. It conforms to SAE and MIL-Spec standards, making it appropriate for both commercial and light industrial service. It should not be stored in direct sunlight or near motors or other electrical equipment that may generate ozone, as ozone degrades NBR compounds.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent petroleum product resistance
• 90 durometer extra hard rating for high-pressure sealing applications
• Operating range of -40 degrees F to 250 degrees F
• Conforms to SAE and MIL-Spec standards
• Round cross section, Dash 146 size designation
• Strong tear and abrasion resistance with reliable compression set performance

Compatibility

Compatible with petroleum products, oils, fuels, and lubricants. Designed as a standard Dash 146 replacement O-ring for use in hydraulic, pneumatic, and fluid-handling assemblies requiring a Buna-N seal at this size designation.

Installation Notes

Installation should be performed by a qualified mechanic, pipefitter, or maintenance technician. Depressurize and isolate the system fully before removing the old seal or installing the new O-ring. Lightly lubricate the O-ring with a compatible fluid prior to seating to reduce installation stress and avoid cutting the seal. Do not store unused O-rings in direct sunlight or near ozone-generating equipment such as electric motors.