Value Collection ZMSCH70018 O-ring Dash 018 Nbr 100-pack

Product Description

The VALUE COLLECTION ZMSCH70018 is a Dash 018 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It features a 0.75 inch inside diameter, a 0.875 inch outside diameter, and a 0.0625 inch cross-section thickness with a round cross-section profile. Rated at 70 Shore A hardness, this O-ring delivers strong resistance to petroleum-based fluids, solid compression set performance, and good tear and abrasion resistance. It is sold in a package quantity of 100 and suits high-volume maintenance, repair, and operations (MRO) environments.

This O-ring is suited for plumbing, HVAC, hydraulic, and pneumatic systems where petroleum-fluid compatibility is required. Common install scenarios include pump seals, valve bodies, fittings, and fluid line connections in residential and light commercial applications. The Buna-N compound performs across a working temperature range of -40 degrees F to 250 degrees F, making it appropriate for a broad range of seasonal and operational conditions. Technicians in plumbing and HVAC trades will find this a dependable stock item for general sealing work.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction provides excellent resistance to petroleum products and hydraulic fluids
• 0.75 inch inside diameter, 0.875 inch outside diameter, 0.0625 inch cross-section thickness — standard Dash 018 sizing
• 70 Shore A hardness rating for durable compression and sealing under pressure
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross-section profile for consistent groove seating and reliable seal contact
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum-based products and hydraulic fluids. Designed as a standard Dash 018 replacement O-ring for use in pumps, valves, fittings, and fluid system components requiring a 0.75 inch inside diameter seal. Not recommended for use with ozone-generating equipment or in direct sunlight storage environments.

Installation Notes

O-ring installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics. Always depressurize and isolate the system before replacing any O-ring seal. Inspect the groove for damage or debris before seating the new ring; do not stretch or twist the O-ring during installation. Avoid storing unused O-rings near motors, electrical equipment, or in direct sunlight, as ozone and UV exposure degrade Buna-N compound over time.