Value Collection ZMSCH70046 O-ring Dash 046 Nbr 50-pack

Product Description

The VALUE COLLECTION ZMSCH70046 is a Dash 046 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 4.25 inches inside diameter, 4.375 inches outside diameter, and 0.0625 inches thick, with a round cross section. Rated at 70 Shore A hardness, this O-ring delivers reliable compression set resistance, tear resistance, and abrasion resistance. It is sold in a package of 50 and is well-suited for plumbing, hydraulic, and mechanical seal applications where petroleum-based fluid compatibility is required.

This O-ring is appropriate for use in residential and commercial systems where Buna-N material is specified, including hydraulic assemblies, pneumatic fittings, pumps, valves, and pipe connections that contact petroleum-based fluids or oils. The Dash 046 designation follows the AS568 standard sizing series, making it straightforward to match against OEM and aftermarket seal specifications. Plumbers, HVAC technicians, and mechanical equipment service professionals commonly install this size in mid-to-large diameter fittings and manifold connections.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides a firm, reliable seal with strong compression set performance
• Round cross section, Dash 046 per AS568 sizing standard
• Operating temperature range of -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Package quantity of 50 units per order, minimum order quantity of 1 package

Compatibility

Compatible with petroleum products, oils, and related hydraulic fluids. Designed for use in systems where Buna-N elastomer and Dash 046 sizing are specified. Not recommended for exposure to direct sunlight, ozone sources, or electrical equipment that may generate ozone during storage or service.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or mechanical service professionals. Always depressurize and de-energize the system before replacing O-rings. Inspect the groove and mating surface for damage or debris before seating the new ring. Avoid overstretching the O-ring during installation to prevent cross-section distortion and premature seal failure.