Value Collection ZMSCH70168 O-ring Dash 168 Nbr 70A 25-pack

Product Description

The VALUE COLLECTION ZMSCH70168 is a Dash 168 Buna-N (Nitrile Butadiene Rubber) O-ring with a 7.25-inch inside diameter, 7.438-inch outside diameter, and a 0.0937-inch (3/32 inch) cross-section thickness. Hardness is rated at 70 Shore A, placing it in the hard range for general-duty sealing work. This O-ring carries a round cross-section profile and meets SAE and MIL-Spec standards. It is sold in packages of 25 and is a go-to seal for plumbing, hydraulic, and fluid-system applications where petroleum-fluid compatibility is required. Licensed tradespeople and maintenance technicians working on fluid-handling equipment are the primary installers.

This O-ring is suited for static and dynamic sealing applications in residential and commercial systems that involve petroleum-based fluids, oils, fuels, and hydraulic media. Its operating temperature range of -40 degrees F to 250 degrees F makes it appropriate for a wide range of indoor and outdoor service environments. Typical install scenarios include pump housings, pipe fittings, valve bodies, and filter canisters where a Dash 168 dimension seal is specified. Buna-N is the most widely used O-ring elastomer in trade service work, making this a practical stocking item for field and shop use.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides reliable compression set and sealing under pressure
• Round cross-section profile conforms to Dash 168 AN/SAE standard dimensions
• Operating range of -40 degrees F to 250 degrees F for broad service suitability
• Tear and abrasion resistant for use in dynamic sealing environments
• Meets SAE and MIL-Spec standards; sold in a 25-piece package for shop stocking

Compatibility

Compatible with petroleum products, hydraulic oils, fuels, and similar media. Designed as an OEM-style replacement or service seal for any application specifying a Dash 168 O-ring in Buna-N material. Not recommended for exposure to ozone, direct sunlight during storage, or near motors and electrical equipment that may generate ozone.

Installation Notes

O-ring installation should be performed by a qualified plumber, hydraulic technician, or mechanical service professional following applicable codes and system manufacturer guidelines. Always depressurize and de-energize the system before replacing any seal. Lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent rolling or tearing during assembly. Avoid installing in applications involving ozone-generating equipment, strong oxidizing agents, or ketones, as Buna-N is not compatible with those media.