Usa Industrials ZUSAH90910 O-ring Dash 910 Buna-n 100pc

Product Description

The USA INDUSTRIALS ZUSAH90910 is a Dash 910 Nitrile Butadiene Rubber (Buna-N) O-ring designed for use in fluid and pneumatic sealing applications across HVAC, plumbing, hydraulic, and general industrial systems. It measures 0.755 inches inner diameter by 0.949 inches outer diameter with a cross-section thickness of 0.097 inches. The round cross-section profile seats reliably in standard O-ring grooves. At 90 Shore A hardness (Extra Hard rating), this O-ring delivers strong resistance to compression set, tearing, and abrasion. Buna-N is the most widely used O-ring elastomer in trade applications, particularly where petroleum-based media are present.

This O-ring is suited for residential and commercial applications involving petroleum-based fluids and hydraulic systems. HVAC technicians, plumbers, and mechanical contractors use Dash 910 O-rings as replacement seals in valves, fittings, pumps, and refrigerant-side components compatible with petroleum products. The operating temperature range spans -40 degrees F to 250 degrees F, making it appropriate for a wide range of service environments. Each order contains 100 pieces, supporting both single-repair and bulk maintenance needs.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction - excellent resistance to petroleum products and hydraulic fluids
• 90 Shore A hardness (Extra Hard) for strong compression set resistance and dimensional stability under load
• Round cross-section profile for reliable seating in standard Dash 910 O-ring grooves
• Operating range of -40 degrees F to 250 degrees F suits a broad range of mechanical and HVAC service conditions
• Tear and abrasion resistant for demanding sealing environments
• Sold in a 100-piece package - suitable for fleet service and bulk repair stock

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Designed as a standard Dash 910 O-ring replacement for valves, fittings, and mechanical assemblies requiring a 0.755-inch ID Buna-N seal. Not recommended for applications involving ozone exposure, direct sunlight storage, or proximity to motors and other ozone-generating electrical equipment.

Installation Notes

Installation should be performed by a qualified mechanic, plumber, or HVAC technician. Always depressurize and de-energize the system before replacing O-rings; relieve all fluid or refrigerant pressure and confirm the line is isolated before disassembly. Lubricate the O-ring with a compatible fluid during installation to prevent tearing during seating. Do not store unused O-rings in direct sunlight or near motors or other electrical equipment that may generate ozone, as ozone exposure degrades Buna-N material.