Value Collection ZMSCH2.4X7.6 O-ring 7.6 in Id Nbr

Product Description

The VALUE COLLECTION ZMSCH2.4X7.6 is a large-diameter Buna-N (Nitrile Butadiene Rubber) o-ring designed for static and dynamic sealing applications in fluid and pneumatic systems. Measuring 7.6 inches inside diameter, 12.4 inches outside diameter, and 2.4 inches thick with a round cross section, this o-ring is engineered to seat into standard grooves and maintain a reliable seal under pressure. Rated for a working temperature range of -40 degrees F to 250 degrees F and a Shore A hardness of 70, it suits demanding sealing environments where petroleum-based fluids are present. Installation is performed by licensed plumbers, HVAC technicians, or millwrights depending on the application.

This o-ring is suited for use in hydraulic systems, pneumatic assemblies, pumps, compressors, valves, and large-bore pipe fittings where petroleum products or oils are the working media. The Buna-N compound delivers excellent resistance to petroleum products, fuels, and lubricating oils, making it a standard choice in industrial, HVAC, and plumbing maintenance. Sold in a package quantity of 100 with a minimum order quantity of 1, this SKU accommodates both single-replacement service calls and larger stocking needs.

Key Features

• Buna-N (NBR) elastomer — the most widely used o-ring material for petroleum-fluid compatibility
• Round cross section for reliable groove seating and consistent compression set
• Rated -40 degrees F to 250 degrees F continuous working temperature
• Shore A hardness of 70 — hard rating for resistance to extrusion under pressure
• Meets SAE and MIL-Spec standards
• Resistant to tear and abrasion; not suitable for ozone-rich environments or direct sunlight storage

Compatibility

Compatible with petroleum products, fuels, hydraulic oils, and lubricants. Designed as a standard round-cross-section o-ring replacement for large-bore sealing applications in hydraulic, pneumatic, plumbing, and HVAC systems where Buna-N elastomer is specified. Not FDA approved; not recommended for food-contact applications.

Installation Notes

Depressurize and isolate the system before removing the existing o-ring. Clean the groove and seating surface of any debris, old sealant, or worn elastomer material before installing the new o-ring. Apply a compatible lubricant to the o-ring surface to ease installation and prevent rolling or twisting during seating. Do not store unused o-rings near electric motors, ozone-generating equipment, or in direct sunlight, as ozone and UV exposure degrade NBR compounds.