Value Collection ZMSCH90247 O-ring Dash 247 Nitrile 90A

Product Description

The VALUE COLLECTION ZMSCH90247 is a Dash 247 O-ring manufactured from Buna-N (nitrile butadiene rubber), designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 4.625 inches inside diameter, 4.875 inches outside diameter, and 0.125 inches thick with a round cross section. Rated at 90 durometer (extra hard), this O-ring delivers firm compression resistance and reliable sealing under pressure. The nitrile compound provides excellent resistance to petroleum-based fluids, oils, and fuels, making it a standard choice for hydraulic, pneumatic, and fuel system service work. Rated for continuous use from -40 to 250 degrees F.

This O-ring suits residential and commercial applications wherever a Dash 247 size seal is required, including hydraulic cylinders, pump housings, valve bodies, and fittings that handle petroleum-based media. It is commonly installed by plumbers, HVAC technicians, and industrial maintenance mechanics during seal replacement or new assembly work. The package contains 25 pieces, making it practical for bench stock or multi-unit service calls.

Key Features

• Buna-N (nitrile) compound offers excellent resistance to petroleum products, oils, and fuels
• 90 durometer extra-hard rating provides firm compression set and abrasion resistance
• Operating temperature range of -40 to 250 degrees F suits a wide range of service environments
• Meets SAE and MIL-Spec standards for dimensional and material compliance
• Round cross section, Dash 247 designation for straightforward replacement identification
• Package quantity of 25 pieces per order supports shop stock and field service kits

Compatibility

Compatible with petroleum products and petroleum-based fluid systems. Should not be used in contact with ozone, direct sunlight exposure during storage, or near motors and electrical equipment that may generate ozone. Designed as an OEM-style replacement wherever a Dash 247 Buna-N O-ring is specified.

Installation Notes

Power down or depressurize the system fully before removing any seals or fittings. Clean the groove and mating surfaces to remove debris or old seal material before installation. Avoid stretching the O-ring beyond necessary to seat it in the groove, and do not use sharp tools that could nick or cut the elastomer. Follow applicable plumbing, hydraulic, or mechanical codes for the system being serviced.