Value Collection ZMSCH70161 O-ring Dash 161 Nitrile 70A

Product Description

The VALUE COLLECTION ZMSCH70161 is a Dash 161 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 5.5 inches inside diameter, 5.688 inches outside diameter, and 0.0937 inches thick, with a round cross-section profile. Rated at 70 Shore A hardness, this O-ring delivers reliable compression set resistance along with strong tear and abrasion resistance. Licensed plumbers, hydraulic technicians, and maintenance mechanics specify Buna-N O-rings for petroleum-based fluid systems due to the material's proven compatibility with oils, fuels, and hydraulic fluids.

This O-ring is suited for static and dynamic sealing applications in residential and commercial plumbing, hydraulic systems, pneumatic equipment, and general industrial fluid handling where petroleum-based media are present. Its operating temperature range of -40 degrees F to 250 degrees F covers a wide variety of service conditions. Packaged in quantities of 25 per unit, it is appropriate for high-volume service shops, maintenance departments, and field technicians who need reliable stock on hand.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products including oils, fuels, and hydraulic fluids
• 70 Shore A hardness rating provides a firm, durable seal with strong compression set performance
• Round cross-section profile conforms to standard O-ring groove dimensions for Dash 161
• Wide service temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Store away from direct sunlight and ozone-generating electrical equipment to maintain material integrity

Compatibility

Designed as a standard Dash 161 O-ring replacement compatible with petroleum-based fluids and lubricants. Not recommended for use with brake fluid, ketones, esters, or strong acids. Not FDA approved.

Installation Notes

O-ring installation should be performed by a qualified plumber, hydraulic technician, or maintenance mechanic. Relieve all system pressure and depressurize fluid lines completely before removing the existing O-ring. Lightly lubricate the O-ring with a compatible petroleum-based lubricant prior to seating to prevent pinching or tearing during installation. Inspect the groove for burrs or surface damage before fitting the new O-ring.