Value Collection ZMSCH70368 O-ring Dash 368 Nbr 70

Product Description

The VALUE COLLECTION ZMSCH70368 is a Dash 368 O-ring manufactured from Nitrile Butadiene Rubber (NBR), also known as Buna-N, the most widely used elastomer in O-ring sealing applications. It measures 7.75 inches inside diameter, 8.125 inches outside diameter, and 0.1875 inches thick with a round cross section. Hardness is rated at 70 Shore A, placing it in the hard range for firm, reliable sealing under compression. This O-ring is suited for use with petroleum-based fluids and is installed by plumbers, HVAC technicians, and industrial maintenance professionals requiring a dependable static or dynamic seal in high-compatibility sealing environments.

This O-ring is appropriate for use in hydraulic systems, pneumatic assemblies, fluid handling equipment, and general industrial sealing applications where contact with petroleum products is expected. Its temperature range of -40 degrees F to 250 degrees F makes it suitable for both refrigeration-side and moderate-heat applications. The Buna-N compound delivers excellent compression set resistance along with strong tear and abrasion resistance. This part is sold in a package quantity of 5. It should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone.

Key Features

• Nitrile Butadiene Rubber (Buna-N) construction with excellent resistance to petroleum products
• 70 Shore A hardness for firm sealing under compression
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross section for consistent seating in standard O-ring grooves
• Meets SAE and MIL-Spec standards
• Strong tear and abrasion resistance for extended service life

Compatibility

Designed for sealing applications involving petroleum products and compatible fluids in hydraulic, pneumatic, and general industrial systems. Compatible material designation: Petroleum Products.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or industrial maintenance technician familiar with O-ring groove specifications. Depressurize and isolate the system before removing the old seal and installing the replacement. Avoid rolling or twisting the O-ring during installation; use a compatible lubricant approved for the fluid being sealed. Do not store unused O-rings in direct sunlight or near ozone-generating equipment such as electric motors.