Value Collection ZMSCH70020 O-ring Dash 020 Buna-n 100-pack

Product Description

The VALUE COLLECTION ZMSCH70020 is a Dash 020 Buna-N (Nitrile Butadiene Rubber) O-ring with a 0.875 inch inside diameter, a 1.000 inch outside diameter, and a 0.0625 inch cross-section thickness. It carries a Shore A hardness rating of 70, placing it in the hard durometer range, and features a round cross-section profile. Rated for service from -40 degrees F to 250 degrees F, this O-ring is well-suited for sealing applications involving petroleum-based fluids. It is supplied in a 100-piece package and is installed by plumbers, HVAC technicians, hydraulic system technicians, and industrial maintenance professionals.

This O-ring is widely used in hydraulic fittings, pneumatic connections, fuel system components, and fluid transfer assemblies where petroleum-product resistance is required. Its dimensional profile follows standard Dash 020 sizing, making it a direct fit in grooves machined or molded to AS568 Dash 020 specifications. Typical applications include service valve seals, compressor fittings, pump housings, and plumbing union connections in both residential and light commercial settings.

Key Features

• Buna-N (NBR) elastomer delivers excellent resistance to petroleum oils, fuels, and hydraulic fluids
• Shore A 70 hardness provides reliable compression set and dimensional stability under load
• Rated from -40 degrees F to 250 degrees F for broad temperature range serviceability
• Round cross-section conforms to standard Dash 020 groove geometry
• Meets SAE and MIL-Spec standards
• Good tear and abrasion resistance extends service life in dynamic and static sealing applications

Compatibility

Designed as a standard Dash 020 replacement O-ring compatible with grooves and fittings dimensioned for 0.875 inch ID seals. Compatible with petroleum-based fluids and oils per supplier specifications. Not FDA approved; not recommended for food-contact or potable-water-contact applications where FDA-grade compounds are required.

Installation Notes

O-rings in this size class are installed by licensed plumbers, HVAC technicians, and fluid-system mechanics. Always depressurize and drain the system before replacing any seal. Inspect the mating groove for nicks, burrs, or corrosion before installation, and apply a light coat of compatible lubricant to ease seating and prevent installation-related tearing. Avoid storing unused O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades NBR elastomers over time.