Value Collection ZMSCH70103 O-ring Dash 103 Nitrile Buna-n

Product Description

The VALUE COLLECTION ZMSCH70103 is a Dash 103 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, sized at 0.094 inches inside diameter, 0.281 inches outside diameter, and 0.094 inches thick. Rated at 70 Shore A hardness, this O-ring is designed for static and dynamic sealing applications where contact with petroleum-based fluids is expected. The Buna-N compound is the most widely used elastomer in fluid sealing, offering reliable compression set resistance along with strong tear and abrasion resistance. Licensed plumbers, HVAC technicians, and hydraulic system technicians regularly specify this material for general-purpose sealing across a broad temperature range.

This O-ring is suited for use in residential and commercial plumbing, HVAC refrigerant circuits, hydraulic fittings, fuel systems, and pneumatic equipment wherever a Dash 103 cross-section seal is required. Its compatibility with petroleum products makes it a go-to choice for valve stems, pump housings, fittings, and fluid connectors in both new construction and maintenance and repair applications. The part ships in a package quantity of 100, making it practical for stocking in a service van or shop inventory. It should not be stored in direct sunlight or near motors or other electrical equipment that may generate ozone.

Key Features

• Buna-N (Nitrile) compound offers excellent resistance to petroleum products and hydraulic fluids
• 70 Shore A hardness rating provides a firm, reliable seal under compression
• Operating temperature range of -40 degrees F to 250 degrees F suits most HVAC and plumbing environments
• Round cross section conforms to SAE and MIL-Spec standards
• Strong tear and abrasion resistance extends service life in dynamic applications
• Package quantity of 100 supports shop stocking and fleet maintenance needs

Compatibility

Compatible with petroleum products and suitable for use in systems and fittings requiring a Dash 103 O-ring per SAE and MIL-Spec dimensional standards. Not FDA approved; not intended for direct food-contact applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system technicians. Always depressurize and isolate the system before removing or replacing any O-ring seal. Lightly lubricate the O-ring with a compatible fluid or grease before seating to prevent tearing during installation. Do not expose the installed O-ring or stored inventory to ozone sources such as electric motors or direct sunlight, as ozone degrades Nitrile compounds over time.