Value Collection ZMSCH70362 O-ring Dash 362 Nbr 5 Pack

Product Description

The VALUE COLLECTION ZMSCH70362 is a Dash 362 Nitrile Butadiene Rubber (NBR/Buna-N) O-ring with a 6.25-inch inner diameter, 6.625-inch outer diameter, and a 3/16-inch (0.1875-inch) round cross section. Rated at 70 durometer hardness, this O-ring is engineered for reliable sealing in systems that handle petroleum-based fluids and lubricants. It operates across a temperature range of -40 degrees F to 250 degrees F, making it suitable for a broad range of stationary and dynamic sealing applications. Each order includes five O-rings. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this part in fluid-handling assemblies where a consistent, compression-resistant seal is required.

Buna-N O-rings in the Dash 362 size are commonly used in hydraulic systems, fuel circuits, pump housings, valve bodies, and piping connections where petroleum-product compatibility is essential. The large-diameter profile fits flanged connections, large-bore valve seats, and industrial fluid couplings in both residential and commercial mechanical systems. This O-ring is not recommended for use with ozone-generating environments, direct sunlight exposure during storage, or fluids outside its rated chemical compatibility range.

Key Features

• Buna-N (NBR) elastomer — the most widely used O-ring material for petroleum-product resistance
• 70 durometer hardness rating provides a firm, compression-resistant seal
• Wide temperature range: -40 degrees F to 250 degrees F
• Excellent compression set, tear resistance, and abrasion resistance
• Round cross section ensures consistent seating in standard O-ring grooves
• Meets SAE and MIL-Spec standards
• Sold as a pack of 5 units

Compatibility

Compatible with petroleum-based products including oils, fuels, and hydraulic fluids. Designed as an OEM-style replacement or service O-ring for large-bore sealing applications requiring a Dash 362 standard size. Not compatible with ozone, strong acids, ketones, esters, or halogenated solvents.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical technician. Depressurize and drain the affected system fully before removing the old O-ring or installing the replacement. Lightly lubricate the O-ring with a compatible petroleum-based lubricant before seating to prevent twisting or tearing during installation. Do not store unused O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as this degrades NBR elastomer over time.