Value Collection ZMSCH90335 O-ring Dash 335 Nbr 90 Duro 25-pack

Product Description

The VALUE COLLECTION ZMSCH90335 is a Dash 335 Buna-N (Nitrile Butadiene Rubber) O-ring rated at 90 durometer hardness with a round cross section. It measures 2.75 inches inside diameter, 3.125 inches outside diameter, and 0.1875 inches thick. Designed for static and dynamic sealing applications, this O-ring performs across a temperature range of -40 to 250 degrees F. Its NBR compound delivers strong resistance to petroleum-based fluids, making it a reliable sealing choice in hydraulic, pneumatic, and fluid-handling systems. Licensed plumbers, hydraulic technicians, and industrial maintenance professionals commonly specify Buna-N O-rings for these environments. Sold in a package of 25.

Buna-N O-rings in the Dash 335 size are widely used in petroleum fluid systems, hydraulic cylinder assemblies, pump housings, valve stems, and pipe fittings where petroleum product exposure is a factor. This extra-hard 90 durometer rating provides enhanced resistance to extrusion under pressure compared to standard 70 durometer compounds. Suitable for both residential and commercial plumbing, industrial fluid power, and general MRO applications where a reliable NBR seal in this size range is required.

Key Features

• Buna-N (NBR) compound with excellent resistance to petroleum products, oils, and fuels
• 90 durometer extra-hard rating reduces extrusion risk in high-pressure applications
• Temperature range of -40 to 250 degrees F for broad service compatibility
• Round cross section, 0.1875 inches thick, conforms to SAE and MIL-Spec standards
• Good compression set, tear resistance, and abrasion resistance for extended service life
• Package of 25 units for shop stock or multi-unit service calls

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Conforms to SAE and MIL-Spec dimensional standards for Dash 335 O-rings. Not FDA approved; not intended for food-contact or potable water applications.

Installation Notes

Installation is typically performed by licensed plumbers, hydraulic technicians, or industrial maintenance mechanics. De-pressurize and drain the system fully before removing the old O-ring or installing a replacement. Avoid storing Buna-N O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone exposure degrades NBR compounds. Lubricate the O-ring with a compatible fluid during installation to prevent tearing during seating.