Value Collection ZMSCH70228 O-ring Dash 228 Nbr 50 Pack

Product Description

The VALUE COLLECTION ZMSCH70228 is a Dash 228 O-ring made from Nitrile Butadiene Rubber (NBR), also known as Buna-N. It features a 2.25-inch inside diameter, 2.5-inch outside diameter, and a 0.125-inch round cross-section thickness. Rated at 70 Shore A hardness, this O-ring is designed to seal against petroleum-based fluids and is commonly installed by HVAC technicians, plumbers, and industrial mechanics in hydraulic, pneumatic, and fluid-handling systems. It is sold in a package quantity of 50, making it practical for service fleets and shop stock.

This O-ring is suited for applications involving petroleum products, oils, and fuels across residential and commercial systems. Common install scenarios include hydraulic fittings, pump seals, valve bodies, and fluid-line connections where a Dash 228 cross-section is specified. The Buna-N compound provides strong resistance to compression set and abrasion, making it a reliable choice for dynamic and static sealing applications. It should not be stored in direct sunlight or near motors or equipment that generates ozone.

Key Features

• Buna-N (NBR) elastomer offers excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides firm, reliable sealing under pressure
• Round cross-section with 0.125-inch thickness meets Dash 228 dimensional standards
• Operating temperature range from -40 degrees F to 250 degrees F
• Tear and abrasion resistant for use in dynamic sealing environments
• Meets SAE and MIL-Spec standards
• Sold in a 50-piece package for shop and fleet stock

Compatibility

Designed as an OEM-style replacement or maintenance stock O-ring for systems requiring a Dash 228 NBR seal with a 2.25-inch inside diameter and 0.125-inch cross section. Compatible with petroleum product environments.

Installation Notes

Installation should be performed by a qualified technician familiar with the sealing system being serviced. Always depressurize and de-energize the system before replacing any O-ring. Lubricate the O-ring with a compatible fluid prior to installation to reduce the risk of tearing during assembly. Do not install if the seating surface shows signs of corrosion, scoring, or debris that could compromise the seal.