Value Collection ZMSCH90333 O-ring 2.5 in Id Nbr Dash 333

Product Description

The VALUE COLLECTION ZMSCH90333 is a Dash 333 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 2.5 inches inside diameter, 2.875 inches outside diameter, and 0.1875 inches thick, with a round cross section. The 90 durometer hardness rating places it in the extra-hard range, making it well suited for high-pressure sealing environments. It is installed by plumbers, hydraulic technicians, HVAC mechanics, and industrial maintenance trades wherever petroleum-fluid-resistant sealing is required.

This O-ring is used in hydraulic systems, pneumatic cylinders, pumps, valves, and fluid fittings that handle petroleum-based oils, fuels, and lubricants. The Buna-N compound delivers reliable compression set resistance and strong tear and abrasion resistance across a wide temperature range of -40 degrees F to 250 degrees F. It is appropriate for both residential and light commercial plumbing and mechanical applications where a standard Dash 333 O-ring is specified. Sold in a package quantity of 25 units.

Key Features

• Buna-N (Nitrile Butadiene Rubber) material provides excellent resistance to petroleum products, oils, and fuels
• 90 durometer extra-hard hardness for high-pressure sealing performance
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross-section profile per Dash 333 sizing standard
• Meets SAE and MIL-Spec standards
• Sold as a pack of 25 for shop stock and service truck inventory

Compatibility

Compatible with petroleum products, oils, and lubricants. Designed as an OEM-style replacement or service stock O-ring for any application specifying a Dash 333 Buna-N O-ring. Should not be used with ozone-generating environments, direct sunlight exposure, or fluids incompatible with Nitrile Butadiene Rubber.

Installation Notes

Installation is performed by qualified plumbing, hydraulic, or mechanical trades. Always depressurize and drain the system before removing or replacing O-rings. Lubricate the O-ring with a compatible fluid or grease prior to installation to prevent tearing during assembly. Do not store Buna-N O-rings near motors, electrical equipment, or in direct sunlight, as ozone exposure degrades the elastomer.