Value Collection ZMSCH90123 O-ring Dash 123 Nbr 90 Duro

Product Description

The VALUE COLLECTION ZMSCH90123 is a Dash 123 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 1.188 inches inside diameter, 1.375 inches outside diameter, and 0.094 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 to 250 degrees F, making it suitable for a broad range of service conditions. Licensed plumbers, HVAC technicians, and pipefitters install these in hydraulic, pneumatic, and fluid system assemblies.

This O-ring is suited for residential and commercial applications involving petroleum-based fluids, hydraulic oils, and fuels. Its Buna-N compound provides excellent resistance to petroleum products, which makes it a common choice in HVAC refrigerant line fittings, plumbing valves, hydraulic cylinders, and pump assemblies. The Dash 123 designation follows the AS568 standard sizing system, allowing straightforward cross-referencing across manufacturers and applications. It is sold in a package quantity of 50, well suited to contractors and service shops that maintain O-ring assortments for field repairs.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent resistance to petroleum products
• 90 durometer extra-hard rating for high-compression sealing applications
• Operating temperature range of -40 to 250 degrees F
• Dash 123 sizing per AS568 standard: 1.188 inches ID x 1.375 inches OD x 0.094 inches thick
• Round cross-section with strong tear and abrasion resistance
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products, hydraulic oils, and fuels. Not recommended for ozone-rich environments; store away from direct sunlight, electric motors, and other ozone-generating equipment. This O-ring is not FDA approved and should not be used in food-contact or potable water applications without verifying suitability.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system technicians. Depressurize and drain the system fully before replacing any O-ring to prevent fluid release or injury. Lightly lubricate the O-ring with a compatible fluid prior to seating to reduce installation stress and prevent tearing. Inspect the mating groove for wear, burrs, or contamination before installing the new seal.