Value Collection ZMSCH90126 O-ring Dash 126 Nbr 50-pack

Product Description

The VALUE COLLECTION ZMSCH90126 is a Dash 126 O-ring made from Nitrile Butadiene Rubber (NBR), also known as Buna-N, rated at 90 durometer for extra-hard hardness. It measures 1.375 inches inside diameter, 1.563 inches outside diameter, and 0.094 inches thick with a round cross section. This O-ring seals fluid and gas connections in hydraulic, pneumatic, and plumbing systems where petroleum-based media are present. HVAC techs, plumbers, and industrial maintenance professionals install these as static or dynamic seals in fittings, valves, cylinders, and manifolds. Each order ships in a pack of 50 pieces.

This O-ring is suited for residential and commercial applications involving petroleum products, oils, fuels, and hydraulic fluids. Its temperature range of -40 to 250 degrees F makes it a practical choice across a wide variety of mechanical and fluid-handling systems. The NBR compound provides strong resistance to compression set, tearing, and abrasion, making it reliable in high-cycle or high-pressure seal environments. Typical install scenarios include valve packing replacement, pump rebuilds, hydraulic cylinder servicing, and refrigerant-side fitting repairs where Buna-N compatibility is confirmed.

Key Features

• Buna-N (NBR) elastomer — the most widely used O-ring material, with excellent petroleum product resistance
• 90 durometer extra-hard rating for demanding compression and pressure sealing applications
• Operating temperature range: -40 to 250 degrees F
• Excellent compression set, tear, and abrasion resistance for long service life
• Meets SAE and MIL-Spec standards
• Round cross section, Dash 126 designation for easy cross-reference ordering

Compatibility

Compatible with petroleum products, hydraulic oils, fuels, and similar media. Not recommended for exposure to ozone, direct sunlight during storage, or environments near motors and electrical equipment that generate ozone. Suitable as a replacement or maintenance seal wherever a Dash 126 Buna-N O-ring is specified.

Installation Notes

O-rings should be installed by a qualified plumber, HVAC technician, or mechanical technician following the equipment manufacturer's service procedures. Always depressurize and isolate the system before replacing any seal. Inspect the mating groove and sealing surfaces for scoring or damage prior to installation. Avoid overstretching the O-ring during placement, and do not use petroleum-incompatible lubricants on Buna-N seals.