Value Collection ZMSCH90136 O-ring Dash 136 Buna-n 90 Duro

Product Description

The VALUE COLLECTION ZMSCH90136 is a Dash 136 O-ring made from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid-sealing applications. It measures 2 inches inside diameter, 2.188 inches outside diameter, and 0.094 inches thick with a round cross section. Hardness is rated at 90 durometer, placing it in the extra-hard category for demanding sealing conditions. The working temperature range spans -40 to 250 degrees F. These are sold in a package of 50 units. HVAC technicians, plumbers, and fluid-system mechanics install these in equipment exposed to petroleum-based fluids, hydraulic media, and similar compounds.

Buna-N O-rings are a standard sealing component across residential and commercial HVAC systems, refrigeration equipment, plumbing assemblies, hydraulic circuits, and fuel-handling systems. The Dash 136 sizing is a common AS568 standard dimension used in valve bodies, pump housings, pipe fittings, and fluid manifolds. This O-ring is appropriate wherever a petroleum-resistant, high-durometer elastomeric seal is required. Applications include compressor service ports, refrigerant line access fittings, hydraulic cylinder end caps, and similar static or low-motion dynamic sealing points.

Key Features

• Buna-N (Nitrile) material delivers excellent resistance to petroleum products and hydraulic fluids
• 90 durometer extra-hard rating resists extrusion under higher-pressure sealing conditions
• Operates across a wide temperature range of -40 to 250 degrees F
• Round cross section with 0.094-inch thickness conforms to AS568 Dash 136 standard dimensions
• Strong tear and abrasion resistance extends service life in dynamic or repeated-cycling applications
• Meets SAE and MIL-Spec standards for material and dimensional consistency

Compatibility

Compatible with petroleum products and hydraulic fluids. Not recommended for exposure to ozone, direct sunlight during storage, or proximity to motors and other electrical equipment that may generate ozone. Not FDA approved for food-contact applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or hydraulic system mechanics. Depressurize and isolate the system before removing or replacing any O-ring. Lubricate the O-ring with a compatible fluid or O-ring lubricant prior to seating to prevent rolling or tearing during assembly. Do not store unused O-rings in direct sunlight or near ozone-generating equipment, as this degrades the elastomer.