Value Collection ZMSCH90364 O-ring Buna-n Dash 364 90 Duro

Product Description

The VALUE COLLECTION ZMSCH90364 is a Dash 364 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 6.75 inches inside diameter, 7.125 inches outside diameter, and 0.1875 inches thick, with a round cross section. Rated at 90 durometer (extra hard), this O-ring delivers excellent compression set resistance along with strong tear and abrasion resistance. The temperature range spans -40 degrees F to 250 degrees F, making it suitable for demanding industrial and mechanical sealing environments. Licensed HVAC technicians, plumbers, and industrial mechanics commonly specify Buna-N O-rings for petroleum-based fluid systems.

This O-ring is suited for hydraulic, pneumatic, and fluid-handling systems where contact with petroleum-based products is expected. Typical applications include pump seals, valve bodies, cylinder heads, and pipe fittings in residential and commercial mechanical systems. Its extra-hard 90 durometer rating makes it appropriate for higher-pressure static and dynamic sealing situations. Store away from direct sunlight and ozone-generating equipment such as electric motors to preserve elastomer integrity.

Key Features

• Buna-N (Nitrile) material with excellent resistance to petroleum products and hydraulic fluids
• Extra-hard 90 durometer rating for higher-pressure sealing applications
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross section, Dash 364, per SAE and MIL-Spec standards
• Excellent compression set, tear, and abrasion resistance
• Black color; sold in packages of 10

Compatibility

Compatible with petroleum-based products and hydraulic fluids. Meets SAE and MIL-Spec standards for Dash 364 O-ring dimensions. Not FDA approved; not intended for food-contact or potable-water applications.

Installation Notes

Installation should be performed by a qualified mechanic, plumber, or HVAC technician. Depressurize and de-energize the system fully before removing or installing any sealing components. Lubricate the O-ring with a compatible fluid or grease prior to installation to prevent tearing during seating. Do not install this O-ring in systems where it will contact ozone, strong oxidizers, or fluids outside its rated compatibility range.