Value Collection ZMSCH70236 O-ring Dash 236 Nitrile 50-pack

Product Description

The VALUE COLLECTION ZMSCH70236 is a Dash 236 Nitrile Butadiene Rubber (Buna-N) O-ring used to create reliable static and dynamic seals in plumbing, HVAC, and hydraulic assemblies. It measures 3.25 inches inside diameter, 3.5 inches outside diameter, and 0.125 inches thick with a round cross section. The Buna-N compound carries a Shore A hardness of 70 and is rated for service from -40 degrees F to 250 degrees F. This part is sold in a package of 50. Licensed plumbers, HVAC technicians, and hydraulic system technicians routinely use this size in pump housings, valve bodies, manifolds, and pipe fittings.

This O-ring is suited for residential and commercial applications wherever petroleum-based fluids, oils, or fuels are present. Its Buna-N elastomer offers strong resistance to petroleum products, making it a standard choice for fuel-system connections, refrigeration service valves, and hydraulic circuit fittings. The 50-piece pack supports service truck stocking and shop inventory. Meets SAE and MIL-Spec standards for dimensional and material conformance.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent resistance to petroleum products and hydraulic fluids
• Shore A hardness of 70 — rated Hard — provides reliable compression set performance
• Wide temperature range: -40 degrees F to 250 degrees F continuous service
• Round cross section, 0.125 inches thick, for consistent groove seating and leak-free compression
• Meets SAE and MIL-Spec dimensional standards
• Sold in a 50-piece package for shop and field inventory stocking

Compatibility

Designed as a standard Dash 236 O-ring replacement compatible with petroleum products and petroleum-based hydraulic fluids. Not recommended for use with ozone-generating environments, direct sunlight exposure, or non-petroleum fluid systems without verifying elastomer compatibility.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or hydraulic system technician following applicable codes. Always depressurize and isolate the system before removing the existing O-ring and seating the replacement. Lightly lubricate the O-ring with a compatible petroleum-based or system-approved lubricant to prevent twisting during assembly. Do not store unused O-rings in direct sunlight or near motors or electrical equipment that may generate ozone, as this degrades the Buna-N compound.