Value Collection ZMSCH70165 O-ring Buna-n Dash 165 Pack 25

Product Description

The VALUE COLLECTION ZMSCH70165 is a Dash 165 O-ring manufactured from Buna-N (nitrile butadiene rubber), one of the most widely used elastomers in fluid sealing applications. It measures 6.5 inches inside diameter, 6.688 inches outside diameter, and 0.0937 inches thick with a round cross section. Rated at 70 Shore A hardness, this O-ring delivers reliable sealing performance across a broad temperature range of -40 degrees F to 250 degrees F. It is suited for use wherever petroleum-based fluid containment is required, including hydraulic, pneumatic, and general industrial systems. Each order ships as a pack of 25 pieces.

This O-ring is a standard fit for plumbing, HVAC, hydraulic, and industrial fluid systems where petroleum-product resistance is a priority. The Dash 165 designation follows SAE and MIL-Spec standards, making it a recognized size across a wide range of OEM and aftermarket sealing applications. Technicians working on pumps, valves, fittings, and fluid manifolds in both residential and commercial settings will find this a dependable replacement or service-stock seal.

Key Features

• Buna-N elastomer provides excellent resistance to petroleum-based fluids and lubricants
• 70 Shore A hardness rating with good compression set, tear, and abrasion resistance
• Operating range of -40 degrees F to 250 degrees F suits most HVAC and hydraulic service conditions
• Round cross section meets SAE and MIL-Spec dimensional standards for Dash 165
• Pack of 25 supports service inventory and recurring maintenance needs
• Black color; not FDA approved — appropriate for industrial and mechanical use, not food-contact applications

Compatibility

Designed as a standard Dash 165 replacement O-ring for equipment and assemblies requiring a 6.5-inch ID Buna-N seal per SAE and MIL-Spec standards. Compatible with petroleum-based fluids and lubricants; not recommended for use with ozone, sunlight exposure, or equipment that generates ozone such as electric motors.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial mechanics during pump, valve, or manifold service. Depressurize and drain the system before removing the old seal to prevent fluid release and injury. Lightly lubricate the O-ring with a compatible petroleum-based grease before seating to reduce installation stress and improve sealing. Do not store unused O-rings in direct sunlight or near motors or other equipment that may generate ozone, as this degrades nitrile rubber.