Value Collection ZMSCH90274 O-ring Dash 274 Buna-n

Product Description

The VALUE COLLECTION ZMSCH90274 is a Dash 274 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), a general-purpose elastomer widely used across industrial, mechanical, and fluid-handling applications. The ring measures 10 inches inside diameter, 10.25 inches outside diameter, and 0.125 inches in cross-section thickness with a round cross-section profile. Rated at 90 durometer (extra hard), it delivers firm compression set resistance and reliable sealing under pressure. The operating temperature range runs from -40 degrees F to 250 degrees F, making it suitable for a broad range of service environments. Licensed plumbers, pipefitters, and industrial maintenance technicians are the typical installers.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, pumps, valves, and pipe fittings that handle petroleum-based fluids and lubricants. The Buna-N compound provides excellent resistance to petroleum products, oils, and fuels, making it a standard choice in HVAC, plumbing, and industrial fluid-system maintenance. It is not recommended for use in ozone-rich environments or in direct prolonged sunlight exposure. The package quantity is 10 rings per pack with a minimum order quantity of 1 pack.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound — the most widely used O-ring elastomer for petroleum service
• 90 durometer extra-hard rating provides strong compression set resistance and abrasion resistance
• Operating range of -40 degrees F to 250 degrees F covers most commercial and industrial service conditions
• Round cross-section, Dash 274 designation for straightforward replacement identification
• Compatible with petroleum products, oils, and hydraulic fluids
• Meets SAE and MIL-Spec standards

Compatibility

Designed for use with systems and assemblies that handle petroleum products and oils. Compatible material set includes petroleum-based fluids per manufacturer specification. Not suitable for use with ozone-generating equipment or in direct sunlight storage conditions.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified industrial maintenance technician. Depressurize and isolate the system fully before removing the existing O-ring or introducing the replacement. Avoid rolling or twisting the O-ring during installation, as this can cause premature seal failure. Do not store O-rings near motors, electrical equipment, or in direct sunlight, as ozone and UV exposure degrade Buna-N compound over time.