Value Collection ZMSCH70137 O-ring Dash 137 Nbr 70A

Product Description

The VALUE COLLECTION ZMSCH70137 is a Dash 137 O-ring made from Nitrile Butadiene Rubber (NBR), also known as Buna-N, the most widely used elastomer in fluid sealing applications. It measures 2.0625 inches inside diameter, 2.25 inches outside diameter, and 0.09375 inches thick with a round cross section. Rated at 70 Shore A hardness, this O-ring delivers excellent resistance to petroleum products, strong compression set performance, and solid tear and abrasion resistance. Packaged in quantities of 100, it is suited for high-volume repair and maintenance work in plumbing, HVAC, and industrial fluid systems. Licensed tradespeople and maintenance professionals install these as standard sealing components.

This O-ring is appropriate for static and dynamic sealing applications where petroleum-based fluids, oils, or fuels are present. It performs reliably across a temperature range of -40 degrees F to 250 degrees F, making it suitable for a broad range of residential and light commercial service environments. Typical applications include pump seals, valve stems, hydraulic fittings, and fluid line connections. It conforms to SAE and MIL-Spec standards, providing consistent dimensional and material performance for professional sealing work.

Key Features

• Buna-N (NBR) material offers excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides a firm, reliable seal in both static and dynamic applications
• Operating temperature range of -40 degrees F to 250 degrees F suits most HVAC and plumbing service conditions
• Round cross section with consistent 0.09375-inch thickness ensures predictable groove fit and sealing performance
• Meets SAE and MIL-Spec standards for dimensional and material compliance
• Sold in a pack of 100, minimizing reorder frequency for high-volume service operations

Compatibility

Designed as a standard Dash 137 O-ring replacement compatible with petroleum products and systems where Buna-N elastomer is the specified sealing material. Not FDA approved; not intended for food, beverage, or potable water contact applications.

Installation Notes

O-ring installation should be performed by a qualified technician following the equipment manufacturer's service procedure. Shut down and depressurize the system completely before replacing any sealing component. Lubricate the O-ring with a compatible fluid or grease prior to installation to prevent tearing during seating. 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.