Value Collection ZMSCH70906 Dash 906 Buna-n O-ring 100-pack

Product Description

The VALUE COLLECTION ZMSCH70906 is a Dash 906 O-ring made from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid sealing applications. It measures 0.468 inches inside diameter, 0.624 inches outside diameter, and 0.078 inches thick with a round cross section and a Shore A hardness of 70. This O-ring is rated for service from -40 degrees F to 250 degrees F and is compatible with petroleum-based fluids, making it a reliable choice for hydraulic, pneumatic, and fuel system sealing. It is sold in packages of 100.

This O-ring is specified as an O-Ring Boss (ORB) gasket for straight-thread tube fittings, which are common in hydraulic systems, HVAC refrigerant circuits, plumbing assemblies, and industrial fluid transfer equipment. The Dash 906 designation follows SAE and MIL-Spec sizing standards, so it is straightforward to cross-reference against existing fitting specifications. Residential and commercial service technicians working on hydraulic lines, oil systems, or refrigerant-rated fitting connections will find this size in frequent rotation.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction offers excellent resistance to petroleum products, hydraulic oils, and fuels
• Round cross section with 70 Shore A hardness provides reliable compression set and sealing under pressure
• Operating temperature range of -40 degrees F to 250 degrees F suits a wide range of service environments
• Tear and abrasion resistance extends service life in dynamic or high-cycle applications
• Meets SAE and MIL-Spec standards for Dash 906 O-ring sizing
• Sold in a 100-piece package to support shop stock and bulk service needs

Compatibility

Designed for use with petroleum-based products and compatible with straight-thread O-Ring Boss tube fittings per SAE and MIL-Spec Dash 906 standards. Not FDA approved; not intended for food-contact applications.

Installation Notes

O-rings should be installed by a qualified technician familiar with the fitting system being serviced. Always depressurize and de-energize the system before replacing seals, and relieve any residual fluid pressure before disassembly. Lightly lubricate the O-ring with a compatible fluid or assembly lubricant before installation to prevent twisting or pinching during makeup. Avoid storing Buna-N O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades nitrile rubber.