Value Collection ZMSCH70235 O-ring Dash 235 Nbr 50 Pack

Product Description

The VALUE COLLECTION ZMSCH70235 is a Dash 235 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 3.125 inches inside diameter, 3.375 inches outside diameter, and 0.125 inches thick, with a round cross-section and a hardness rating of 70 Shore A. This O-ring delivers excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. It is sold in a package of 50 units. Plumbers, HVAC technicians, and general maintenance professionals use this part for sealing in hydraulic, pneumatic, and fluid-handling assemblies.

The ZMSCH70235 is suited for use in systems that handle petroleum products, oils, fuels, and hydraulic fluids. Its Buna-N compound performs across a broad temperature range, making it a practical choice for both indoor mechanical systems and light industrial plumbing applications. The round cross-section geometry fits standard O-ring grooves sized for the Dash 235 designation. This ring should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades Buna-N compound over time.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound with excellent petroleum product resistance
• Dash 235 sizing: 3.125 inches ID, 3.375 inches OD, 0.125 inches thick
• 70 Shore A hardness rating for firm, reliable sealing compression
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross-section for standard groove fitment
• Meets SAE and MIL-Spec standards

Compatibility

Designed for use with petroleum products, hydraulic oils, fuels, and similar fluid media. Compatible with standard Dash 235 O-ring grooves in hydraulic, pneumatic, and plumbing assemblies. Not recommended for use with ozone, strong acids, ketones, esters, or chlorinated solvents.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance technicians. Depressurize and drain the system completely before removing or replacing any O-ring. Inspect the mating groove and sealing surfaces for nicks, burrs, or debris before installation. Applying a light coat of compatible lubricant to the O-ring during installation helps prevent rolling or tearing without compromising the seal.