Value Collection ZMSCH70913 O-ring Dash 913 Nbr 70

Product Description

The VALUE COLLECTION ZMSCH70913 is a Dash 913 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 0.986 inches inside diameter, 1.218 inches outside diameter, and 0.116 inches thick, with a round cross-section profile. Rated at 70 Shore A hardness, this O-ring delivers reliable compression set resistance along with strong tear and abrasion resistance. It is compatible with petroleum-based fluids and operates across a temperature range of -40 degrees F to 250 degrees F. Licensed plumbers, HVAC technicians, and hydraulic system technicians regularly specify Buna-N O-rings for these performance characteristics.

This O-ring functions as an O-Ring Boss (ORB) gasket for straight-thread tube fittings, making it suitable for hydraulic lines, pneumatic assemblies, plumbing connections, and HVAC refrigerant circuit components where a petroleum-compatible seal is required. It is appropriate for both residential and light commercial applications. The Dash 913 designation follows standard AS568 sizing, allowing straightforward cross-referencing with OEM fitting specifications. Each package contains 100 O-rings, supporting fleet service operations and shops that require consistent on-hand inventory.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — the most widely used O-ring elastomer for petroleum-fluid compatibility
• 70 Shore A hardness with round cross-section for reliable static and dynamic sealing
• Operating temperature range of -40 degrees F to 250 degrees F
• Functions as an O-Ring Boss gasket for straight-thread tube fittings
• Meets SAE and MIL-Spec standards
• Packaged in quantities of 100 for shop and fleet use

Compatibility

Designed for use with petroleum products and compatible fluids in hydraulic, pneumatic, and fluid-handling systems that accept a Dash 913 ORB gasket for straight-thread tube fittings. Not rated for FDA food-contact applications.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or hydraulic system technician familiar with O-ring fitting procedures. Depressurize and drain the system before removing any fittings or seals. Lightly lubricate the O-ring with a compatible fluid prior to installation to prevent tearing during assembly. Do not store unused O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone exposure degrades Buna-N elastomers.