Value Collection ZMSCH90224 O-ring Dash 224 Nbr Pack 50

Product Description

The VALUE COLLECTION ZMSCH90224 is a Dash 224 Nitrile Butadiene Rubber (NBR) o-ring with a 1.75-inch inside diameter, 2-inch outside diameter, and a 0.125-inch cross-section thickness. Manufactured from Buna-N elastomer with a Shore hardness of 90 durometer, this o-ring provides extra-hard compression set resistance and strong tear and abrasion performance. It is rated for service from -40 degrees F to 250 degrees F and is compatible with petroleum-based fluids. Plumbers, HVAC technicians, and industrial maintenance mechanics install this type of seal in hydraulic fittings, fluid connectors, and mechanical assemblies where reliable static or dynamic face sealing is required.

This o-ring suits residential and commercial applications involving petroleum-product fluid systems, including hydraulic lines, fuel system fittings, and general-purpose pipe and valve connections. The Buna-N compound is the most widely used o-ring elastomer in HVAC, plumbing, and fluid-power trades. Each package contains 50 pieces, making it a practical stocking unit for service vans or shop inventory. The Dash 224 designation conforms to standard AS568 sizing, allowing straightforward cross-referencing with groove dimensions specified on system drawings or OEM service manuals.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products
• 90 durometer Shore hardness rated Extra Hard for high-compression seal applications
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross-section profile; 0.125-inch (3.53 mm) thickness per Dash 224 AS568 standard
• Meets SAE and MIL-Spec standards
• Package quantity of 50 pieces per order unit

Compatibility

Compatible with petroleum-based fluids and hydraulic media. Designed as a standard Dash 224 replacement o-ring for use in any groove machined to AS568 Dash 224 specifications. Not recommended for exposure to ozone, strong acids, ketones, or polar solvents.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or mechanical maintenance professionals. Depressurize and drain the system completely before removing the old seal or installing a new one. Lightly lubricate the o-ring with a compatible petroleum-based or system-approved lubricant before seating it in the groove to prevent twisting or nicking during assembly. Store unused o-rings away from direct sunlight, ozone sources, and electrical equipment that may generate ozone, as these conditions degrade Buna-N elastomer over time.