Value Collection ZMSCH70263 O-ring Dash 263 Nitrile

Product Description

The VALUE COLLECTION ZMSCH70263 is a Dash 263 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in sealing applications. It measures 7.25 inches inside diameter, 7.5 inches outside diameter, and 0.125 inches thick with a round cross section. Rated at 70 Shore A hardness, this O-ring handles a working temperature range of -40 degrees F to 250 degrees F. It delivers excellent resistance to petroleum products along with strong compression set, tear, and abrasion resistance. Licensed plumbers, pipefitters, and mechanical technicians install this part in fluid sealing assemblies across industrial and commercial service environments.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, and piping connections where exposure to petroleum-based fluids is expected. Its Buna-N compound performs reliably in applications involving oils, fuels, and lubricants. The large 7.25-inch inside diameter makes it appropriate for larger-bore fittings, valve seats, pump housings, and flanged connections. It conforms to SAE and MIL-Spec standards, making it a dependable choice for both commercial mechanical systems and equipment requiring specification-grade sealing components.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent petroleum product resistance
• 70 Shore A hardness rating for a firm, reliable seal under compression
• Working temperature range: -40 degrees F to 250 degrees F
• Round cross section, Dash 263 standard sizing
• Meets SAE and MIL-Spec standards
• Strong tear and abrasion resistance for long service life in dynamic and static applications

Compatibility

Compatible with petroleum products including oils, fuels, and lubricants. Not FDA approved. Store away from direct sunlight and sources of ozone such as electric motors. Designed as an OEM-style replacement O-ring for equipment requiring a Dash 263 Buna-N seal.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or mechanical technicians. Depressurize and drain the system completely before removing or installing any sealing components. Inspect the mating groove for burrs or surface damage before seating the O-ring. Avoid overstretching the ring during installation, and do not store unused rings near ozone-generating equipment or in direct sunlight.