Value Collection ZMSCH90270 O-ring Dash 270 Nitrile 90A

Product Description

The VALUE COLLECTION ZMSCH90270 is a Dash 270 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid sealing applications. It measures 9 inches inside diameter, 9.25 inches outside diameter, and 0.125 inches in cross-section thickness. The compound is rated at 90 durometer, placing it in the extra-hard hardness range. This O-ring delivers excellent resistance to petroleum-based products, strong compression set performance, and solid tear and abrasion resistance. It is suitable for use across a broad temperature range of -40 to 250 degrees F. Sold in packages of 10.

This O-ring is used in plumbing, hydraulic, pneumatic, and mechanical systems where a reliable static or dynamic seal is required against petroleum-based fluids. Its extra-hard 90 durometer rating makes it well-suited for higher-pressure sealing applications. Licensed plumbers, pipefitters, and industrial maintenance technicians commonly specify Buna-N O-rings for pump housings, valve bodies, cylinder heads, and pipe fittings. The Dash 270 size designation is a standard cross-reference used across trade catalogs and OEM seal kits. Note that this material should not be stored in direct sunlight or near ozone-generating equipment such as electric motors.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — excellent resistance to petroleum products
• 90 durometer extra-hard rating for demanding sealing environments
• Operating temperature range: -40 to 250 degrees F
• Round cross-section profile, standard Dash 270 designation
• Meets SAE and MIL-Spec standards
• Sold in a package quantity of 10

Compatibility

Compatible with petroleum-based fluids and products. Designed as a standard Dash 270 O-ring for use in hydraulic, pneumatic, plumbing, and mechanical sealing applications requiring a Buna-N elastomer. Not FDA approved; not recommended for food-contact applications.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or qualified maintenance technicians depending on the system type. Shut down and depressurize the system fully before replacing any O-ring seal. Lightly lubricate the O-ring with a compatible petroleum-based lubricant before seating to prevent rolling or tearing during installation. Avoid storing unused O-rings near direct sunlight, UV sources, or electrical equipment that may generate ozone, as ozone degrades Buna-N over time.