Value Collection ZMSCH2X20 O-ring 20in Id 24in Od 2in Nbr

Product Description

The VALUE COLLECTION ZMSCH2X20 is a round cross-section O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 20 inches inside diameter, 24 inches outside diameter, and 2 inches thick. The material carries a Shore A hardness of 70, placing it in the hard hardness range, and is rated for service from -40 degrees F up to 250 degrees F. Licensed HVAC technicians, plumbers, and industrial mechanics install this type of seal where petroleum-based fluids or hydraulic media are present. The Buna-N compound delivers strong resistance to petroleum products along with good compression set, tear, and abrasion resistance.

This O-ring is suited for static and dynamic sealing in hydraulic systems, pneumatic cylinders, pumps, valves, and fluid fittings that contact petroleum-based media. Its large outside diameter makes it appropriate for industrial machinery, large-bore hydraulic components, and heavy-duty plumbing or mechanical assemblies. It is not recommended for exposure to ozone-generating equipment, direct sunlight during storage, or media outside its chemical compatibility range. Each package contains 100 pieces with a minimum order quantity of 1.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products
• Round cross-section profile for consistent seating in standard O-ring grooves
• Shore A hardness of 70 for reliable compression set performance
• Wide operating temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Packaged in quantities of 100 pieces per package

Compatibility

Compatible with petroleum products and hydraulic fluids. Designed as an OEM-style replacement or maintenance seal for industrial equipment, hydraulic assemblies, pumps, and valves using standard O-ring groove geometry sized for a 20-inch inside diameter seal.

Installation Notes

Installation is typically performed by licensed millwrights, pipefitters, plumbers, or HVAC technicians working on hydraulic or fluid systems. Depressurize and isolate the system completely before removing the old seal and fitting the replacement. Lubricate the O-ring with a compatible fluid or grease before seating to prevent rolling or tearing during assembly. Do not store unused O-rings near motors, electrical equipment, or in direct sunlight, as ozone and UV exposure degrade Nitrile rubber over time.