Value Collection ZMSCHB90013 O-ring Nbr 90 Duro Dash 8-013

Product Description

The VALUE COLLECTION ZMSCHB90013 is a rectangular cross-section backup O-ring made from Nitrile Butadiene Rubber (NBR), rated at 90 durometer for extra-hard sealing applications. It measures 0.455 inches inside diameter, 0.561 inches outside diameter, and 0.0468 inches thick. The Dash 8-013 designation identifies it within standard O-ring sizing charts. This ring is used as a backup seal to prevent extrusion in static and dynamic sealing assemblies across plumbing, hydraulic, pneumatic, and HVAC systems. It is installed by licensed plumbers, HVAC technicians, and mechanical contractors working with fluid or gas-carrying components.

This O-ring suits applications requiring a hard, extrusion-resistant backup seal in moderate-to-high pressure environments. Its NBR construction provides solid resistance to petroleum-based oils, fuels, and water, making it appropriate for use in valves, fittings, cylinders, and hydraulic connectors found in residential and light commercial mechanical systems. The operating temperature range of -40 to 250 degrees F covers most standard HVAC, plumbing, and fluid power service conditions. This product is sold in a package quantity of 100 rings.

Key Features

• Rectangular cross-section profile functions as a backup ring to resist seal extrusion under pressure
• 90 durometer extra-hard rating provides high resistance to deformation and blowout
• NBR material compatible with petroleum oils, fuels, and water-based fluids
• Operating range of -40 to 250 degrees F suits most mechanical system environments
• Standard Dash 8-013 sizing for straightforward cross-reference and replacement
• Package quantity of 100 units supports service stock and bulk repair work

Compatibility

Designed as a standard Dash 8-013 backup O-ring replacement for use in any groove or assembly calling for a 0.455 inches ID by 0.561 inches OD rectangular NBR seal rated at 90 durometer.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with static or dynamic sealing assemblies. De-pressurize and isolate the system before disassembly. Inspect the mating groove for damage, scoring, or contamination before seating the new ring. Do not roll, twist, or overstretch the ring during installation, as distortion reduces sealing effectiveness.