Value Collection ZMSCH70281 O-ring Dash 281 Nbr 70

Product Description

The VALUE COLLECTION ZMSCH70281 is a Dash 281 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 15 inches inside diameter, 15.25 inches outside diameter, and 0.125 inches thick, with a round cross section and a Shore A hardness rating of 70. This O-ring delivers excellent resistance to petroleum-based fluids, strong compression set retention, and solid tear and abrasion resistance. It is installed by HVAC technicians, plumbers, and industrial service professionals wherever a reliable, petroleum-compatible seal is required.

This O-ring is suited for use in HVAC equipment, plumbing systems, hydraulic assemblies, and general industrial fluid handling where petroleum-product compatibility is required. Its large 15-inch inside diameter makes it appropriate for sealing flanges, housings, manifolds, or large-bore connections in both residential and commercial service environments. The working temperature range of -40 degrees F to 250 degrees F covers most standard mechanical and HVAC service conditions. It meets SAE and MIL-Spec standards. Note that this elastomer should not be stored in direct sunlight or near motors or other electrical equipment that may generate ozone.

Key Features

• Buna-N (Nitrile Butadiene Rubber) material with excellent resistance to petroleum products
• 15 inches inside diameter and 15.25 inches outside diameter with a round cross section
• 0.125 inches cross-section thickness, Dash 281 designation
• Shore A hardness of 70 for a hard, durable compression seal
• Working temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum-based fluids and products. Designed as a standard Dash 281 O-ring replacement for flanges, housings, and large-bore connections requiring a 15-inch ID Buna-N seal conforming to SAE and MIL-Spec O-ring standards.

Installation Notes

Installation should be performed by a licensed technician or qualified service professional. Before installation, shut down the system, relieve all pressure, and drain any residual fluid from the assembly. Inspect the seating groove for damage, debris, or corrosion before seating the O-ring. Do not store this O-ring near motors, ozone-generating equipment, or in direct sunlight, as ozone exposure degrades Buna-N elastomer.