Value Collection ZMSCH70274 O-ring Nitrile Dash 274

Product Description

The VALUE COLLECTION ZMSCH70274 is a Dash 274 nitrile butadiene rubber (Buna-N) O-ring used to create reliable fluid and pressure seals in a wide range of plumbing, hydraulic, and mechanical systems. It measures 10 inches inside diameter, 10.25 inches outside diameter, and 0.125 inches thick, with a round cross section and a Shore hardness rating of 70. Buna-N is the most widely used O-ring elastomer in trade applications, valued for its excellent resistance to petroleum-based fluids, strong compression set retention, and resistance to tearing and abrasion. Licensed plumbers, pipefitters, and mechanical contractors install this size in large-bore assemblies.

This O-ring is suited for residential and commercial plumbing, HVAC, pool equipment, and general industrial applications where sealing against petroleum-based fluids or hydraulic media is required. The Dash 274 designation identifies the standard AS568 sizing, making it straightforward to cross-reference against existing seal specifications on the job. It is appropriate for static and low-dynamic sealing applications within its rated temperature range. Sold in a package quantity of 5, it covers multiple service calls or replacement needs from a single order.

Key Features

• Buna-N (nitrile butadiene rubber) construction with excellent resistance to petroleum products and hydraulic fluids
• Dash 274 AS568 standard sizing for straightforward cross-referencing
• Shore hardness of 70 for firm compression set and reliable sealing under pressure
• Rated from -40 degrees F to 250 degrees F for broad service temperature coverage
• Round cross section for consistent groove fit and even sealing contact
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Not recommended for use with ozone-generating environments, direct sunlight exposure, or electrical equipment areas. Designed as a standard Dash 274 replacement O-ring for large-bore sealing applications in plumbing, HVAC, pool, and mechanical systems.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician. Depressurize and shut off fluid supply to the system before removing the existing seal. Inspect the O-ring groove for nicks, corrosion, or debris before seating the new ring. Avoid rolling or twisting the O-ring during installation to prevent cross-section distortion that can lead to seal failure. Do not store unused O-rings near motors, electrical equipment, or in direct sunlight, as ozone exposure degrades nitrile rubber.