Value Collection ZMSCH70376 O-ring Dash 376 Nbr 9.75 in Id

Product Description

The VALUE COLLECTION ZMSCH70376 is a Dash 376 Nitrile Butadiene Rubber (NBR) O-ring designed for static and dynamic sealing applications across plumbing, hydraulic, and industrial systems. It measures 9.75 inches inside diameter by 10.125 inches outside diameter with a 0.1875-inch cross-section thickness and a round cross-section profile. Rated at 70 Shore A hardness, this O-ring handles operating temperatures from -40 degrees F to 250 degrees F and is compatible with petroleum-based fluids and lubricants. Licensed plumbers, pipefitters, and maintenance technicians install this size for larger-diameter piping flanges, pump housings, and valve assemblies where a reliable NBR seal is required.

This O-ring is suited for residential and commercial applications involving petroleum products, hydraulic oils, and water-based fluids in moderate-temperature environments. Typical installations include large-bore pump covers, filter housings, and flange face seals in HVAC hydronic systems, industrial plumbing, and fluid-handling equipment. It conforms to SAE and MIL-Spec standards, making it appropriate for both commercial maintenance and light industrial service work. Sold in a package quantity of 5, it is well suited for service techs who need on-hand spares for repeat-call equipment.

Key Features

• Nitrile Butadiene Rubber (Buna-N) construction offers excellent resistance to petroleum products, hydraulic fluids, and lubricating oils
• 70 Shore A hardness rating provides strong compression set resistance and durability under sustained clamping loads
• Operating temperature range of -40 degrees F to 250 degrees F covers most HVAC, plumbing, and light industrial service conditions
• Round cross-section profile ensures consistent seating in standard O-ring grooves
• Conforms to SAE and MIL-Spec standards for broad application acceptance
• Resistant to tear and abrasion, extending service intervals in dynamic or high-vibration installations

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Designed as a standard Dash 376 NBR O-ring replacement for large-bore pump housings, valve bodies, filter bowls, and flange assemblies requiring a 9.75-inch inside diameter seal.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified maintenance technician. Depressurize and drain the system completely before removing the existing O-ring or disassembling any joint. Inspect the groove for nicks, corrosion, or debris before seating the new O-ring, and apply a compatible lubricant to ease installation and prevent roll or twist. Do not store NBR O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone exposure degrades the elastomer over time.