Value Collection ZMSCH70027 O-ring Dash 027 Nbr 70 Duro 100pk

Product Description

The VALUE COLLECTION ZMSCH70027 is a Dash 027 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, sized at 1.313 inches inside diameter, 1.438 inches outside diameter, and 0.0625 inches thick. With a 70 Shore A durometer hardness rating, this O-ring delivers reliable sealing performance across a broad operating temperature range of -40 degrees F to 250 degrees F. It is one of the most widely used O-ring elastomers in the trade due to its excellent resistance to petroleum-based fluids, strong compression set retention, and good tear and abrasion resistance. Sold in a package quantity of 100.

This O-ring is suited for hydraulic systems, fuel systems, plumbing assemblies, pneumatic equipment, and general fluid sealing applications where petroleum product exposure is expected. HVAC technicians, plumbers, and industrial mechanics commonly use Dash 027 Buna-N O-rings as replacement seals in valves, fittings, pumps, and manifold connections. The material is rated compatible with petroleum products and meets SAE and MIL-Spec standards. It is not FDA approved and should not be used in food-contact or potable-water applications without independent verification.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — the most widely used O-ring elastomer for petroleum-fluid environments
• 70 Shore A durometer hardness for firm, reliable compression sealing
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross section, Dash 027 sizing per standard O-ring dash numbering
• Meets SAE and MIL-Spec standards
• Package quantity of 100 for shop stock and service van inventory

Compatibility

Compatible with petroleum-based fluids and hydraulic oils. Designed as a standard Dash 027 replacement O-ring for use in valves, fittings, pumps, and fluid system assemblies requiring a 1.313-inch ID round-cross-section seal. Not compatible with ozone, strong oxidizing agents, or applications requiring FDA compliance.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or qualified mechanics. Always depressurize the system and shut off fluid supply before replacing an O-ring. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to reduce installation stress and prevent cutting. Avoid storing unused O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades NBR material over time.