Value Collection ZMSCH70047 O-ring 4.5 in Id Nbr Dash 047

Product Description

The VALUE COLLECTION ZMSCH70047 is a Dash 047 Nitrile Butadiene Rubber (NBR) O-ring designed for static and dynamic sealing applications across plumbing, hydraulic, and fluid-handling systems. It measures 4.5 inches inner diameter by 4.625 inches outer diameter with a 0.0625-inch (1/16 inch) round cross section and a Shore A hardness rating of 70. NBR is the most widely used O-ring elastomer in trade applications, offering dependable resistance to petroleum-based fluids, hydraulic oils, and fuels. Licensed plumbers, pipefitters, and hydraulic technicians are the typical installers of this seal in valve bodies, pump housings, and flanged connections.

This O-ring is suited for both residential and commercial fluid systems where petroleum product compatibility is required. The Dash 047 sizing is a standard AN/SAE designation, making it a common replacement in hydraulic assemblies, fuel systems, and general-purpose sealing applications. The NBR compound performs reliably across a working temperature range of -40 degrees F to 250 degrees F. Each package contains 10 O-rings, sold with a minimum order quantity of 1 package.

Key Features

• Nitrile Butadiene Rubber (Buna-N) compound with excellent resistance to petroleum products and hydraulic fluids
• Dash 047 standard sizing: 4.5 inches ID x 4.625 inches OD x 0.0625 inches thick
• Shore A hardness of 70 with a hard hardness rating for reliable compression set performance
• Rated for service from -40 degrees F to 250 degrees F
• Round cross section for consistent sealing contact in standard O-ring grooves
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids per the listed material specifications. Designed as an OEM-style replacement or service seal for equipment using Dash 047 AN/SAE-standard O-ring grooves. Not FDA approved; not intended for food-contact or potable-water applications without independent verification.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or hydraulic technicians. Depressurize and drain the system fully before removing any existing seals or fittings. Inspect the O-ring groove for burrs, scoring, or contamination before seating the new ring. Do not store unused O-rings in direct sunlight or near motors, generators, or other electrical equipment that may produce ozone, as ozone accelerates NBR degradation.