Value Collection ZMSCH1.6X4.1 O-ring 4.1 in Id Nbr 100pk

Product Description

The VALUE COLLECTION ZMSCH1.6X4.1 is a heavy-section Buna-N (Nitrile Butadiene Rubber) O-ring engineered for sealing applications in systems that handle petroleum-based fluids and gases. It measures 4.1 inches inside diameter, 7.3 inches outside diameter, and 1.6 inches thick, with a round cross-section profile and a Shore A hardness of 70. The black NBR compound delivers excellent compression set resistance along with strong tear and abrasion resistance. Plumbers, HVAC technicians, and industrial maintenance professionals rely on this elastomer type as the most widely used O-ring material across fluid-handling systems operating between -40 and 250 degrees F.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, pump housings, valve bodies, and pipe connections where contact with petroleum products, oils, and fuels is expected. Its large cross-section and wide inside diameter make it appropriate for flanged joints, large-bore fittings, and heavy-duty sealing applications found in both commercial and industrial environments. The part is sold in a package quantity of 100, making it a practical stock item for service fleets and maintenance shops. It is not rated for FDA food-contact applications.

Key Features

• Buna-N (NBR) elastomer with excellent resistance to petroleum products, oils, and fuels
• Shore A hardness of 70 with a hard hardness rating for reliable compression set performance
• Wide operating temperature range: -40 degrees F to 250 degrees F
• Round cross-section for consistent sealing across standard O-ring grooves
• Strong tear and abrasion resistance for demanding mechanical sealing environments
• Conforms to SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products, hydraulic oils, fuels, and similar hydrocarbon-based media. Not recommended for use with ozone, strong oxidizers, or applications requiring FDA-approved compounds. Store away from direct sunlight, ozone sources, and electrical equipment that may generate ozone.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance mechanics. Before servicing any fitting, valve, or pump housing, depressurize the system and isolate the fluid supply. Inspect the O-ring groove for burrs or damage before seating the ring, and apply a compatible lubricant to ease installation and prevent tearing. Do not over-stretch the O-ring during installation.