Value Collection ZMSC31951262 Nbr O-ring Kit 500 Pc

Product Description

The VALUE COLLECTION ZMSC31951262 is a 500-piece nitrile butadiene rubber (NBR) O-ring assortment kit designed for sealing applications across plumbing, HVAC, and general mechanical systems. Each ring is molded from Shore A 70 durometer NBR, a widely specified elastomer known for resistance to petroleum-based fluids, hydraulic oils, and a broad range of shop chemicals. Inside diameters span 1.5 inches to 3 inches, with multiple cross-section thicknesses ranging from 1.5 millimeters to 2.4 millimeters, giving technicians a broad selection from a single kit. Cross-section geometry is round on all pieces. This kit suits tradespeople who need to carry common replacement O-ring sizes without stocking individual part numbers.

This O-ring kit is suited for residential and light commercial service work where NBR seals are the standard call-out. Typical applications include valve and fitting rebuilds, pump seals, refrigeration service ports, and hydraulic connections where petroleum-fluid compatibility is required. The assortment format makes it practical for field service vans and shop bench stock alike. The 1.5-inch to 3-inch inside diameter range covers a large portion of the common sizes encountered in HVAC, plumbing, and fluid-power service work.

Key Features

• 500-piece assortment provides broad size coverage from a single kit
• Nitrile butadiene rubber (NBR) construction offers resistance to petroleum-based fluids and hydraulic oils
• Shore A 70 durometer rating delivers firm, durable sealing without excessive rigidity
• Inside diameter range of 1.5 inches to 3 inches covers a wide variety of common service sizes
• Multiple cross-section thicknesses (1.5, 1.6, 2, and 2.4 millimeters) included in one kit
• Round cross-section geometry for compatibility with standard O-ring grooves

Compatibility

Designed for general-purpose use in plumbing, HVAC, and mechanical sealing applications requiring Shore A 70 NBR O-rings with inside diameters between 1.5 inches and 3 inches.

Installation Notes

O-ring replacement is typically performed by licensed plumbers, HVAC technicians, or qualified mechanics depending on the system being serviced. Always de-energize equipment, relieve system pressure, and isolate the fluid circuit before removing any fitting, valve, or pump assembly. Lubricate NBR O-rings with a compatible fluid or O-ring lubricant before seating to prevent tearing during installation. Never reuse a compressed or damaged O-ring; inspect the groove for burrs or corrosion before installing a new seal.