Value Collection ZMSCH90225 O-ring Dash 225 Nbr 50 Pack

Product Description

The VALUE COLLECTION ZMSCH90225 is a Dash 225 Nitrile Butadiene Rubber (NBR/Buna-N) O-ring with a 1.875-inch inside diameter, 2.125-inch outside diameter, and a 0.125-inch cross-section thickness. Rated at 90 durometer (Extra Hard), it delivers strong resistance to petroleum products, excellent compression set performance, and solid tear and abrasion resistance. The operating temperature range spans -40 degrees F to 250 degrees F. This O-ring is suited for plumbing, hydraulic, pneumatic, and fuel-system sealing applications and is installed by licensed plumbers, HVAC technicians, and fluid-system mechanics. Each package contains 50 rings.

This O-ring is designed for use in systems that contact petroleum-based fluids including oils, fuels, and hydraulic media. The Buna-N compound is the most widely used elastomer in industrial and trade sealing applications due to its broad chemical compatibility and consistent dimensional performance. It conforms to SAE and MIL-Spec standards, making it appropriate for both commercial and light-industrial installations. The Dash 225 designation follows the standard AS568 sizing series. Avoid storage near direct sunlight, electric motors, or other equipment that generates ozone, as ozone exposure degrades NBR over time.

Key Features

• Buna-N (NBR) compound with excellent petroleum and oil resistance
• 90 durometer Extra Hard rating for high-compression sealing applications
• Temperature range of -40 degrees F to 250 degrees F
• Round cross-section, 0.125 inches thick, conforming to Dash 225 sizing
• Meets SAE and MIL-Spec standards
• Package quantity of 50 rings per order

Compatibility

Compatible with petroleum products and similar hydrocarbon-based media. Designed as an OEM-style replacement or service O-ring for hydraulic, pneumatic, fuel, and fluid-handling assemblies requiring a Dash 225 cross-section in NBR compound.

Installation Notes

O-rings of this type are installed by licensed plumbers, HVAC technicians, and hydraulic system mechanics. Before installation, depressurize and de-energize the system and clean the groove and mating surfaces to remove debris or old sealant. Lubricate the O-ring with a compatible fluid or grease to prevent rolling or tearing during assembly. Do not store unused rings near motors, ozone-generating equipment, or in direct sunlight, as this degrades NBR elastomer over time.