Value Collection ZMSCH70327 O-ring Dash 327 Buna-n 50 Pack

Product Description

The VALUE COLLECTION ZMSCH70327 is a Dash 327 O-ring made from Nitrile Butadiene Rubber (Buna-N), one of the most widely used elastomers in fluid sealing applications. It measures 1.75 inches inside diameter, 2.125 inches outside diameter, and 0.1875 inches thick with a round cross section. Rated at 70 Shore A hardness, it delivers reliable compression set resistance along with strong tear and abrasion resistance. Licensed plumbers, HVAC technicians, and industrial maintenance professionals rely on Buna-N O-rings for sealing against petroleum-based fluids across a broad temperature range of -40 degrees F to 250 degrees F.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, plumbing fittings, fuel handling equipment, and general industrial fluid sealing where petroleum product compatibility is required. It is appropriate for both residential and commercial service applications. The Dash 327 designation is an industry-standard sizing reference, making cross-referencing straightforward for technicians sourcing replacements in the field. Each package contains 50 pieces, supporting stocking needs for service fleets or shop inventory.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent resistance to petroleum products
• Dash 327 standard sizing: 1.75 inches ID, 2.125 inches OD, 0.1875 inches thick
• 70 Shore A hardness rating for reliable compression set and sealing performance
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross section for consistent groove seating and uniform sealing contact
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products and petroleum-based fluid systems. Should not be exposed to direct sunlight, ozone sources, or electrical equipment generating ozone during storage, as these conditions degrade Buna-N elastomer over time.

Installation Notes

Shut off fluid supply and relieve system pressure before replacing any O-ring in a pressurized assembly. Lubricate the O-ring lightly with a compatible fluid or assembly lubricant before installation to prevent tearing during seating. Inspect the groove for nicks, burrs, or contamination that could compromise the seal. Installation should be performed by a qualified technician familiar with applicable plumbing, hydraulic, or mechanical codes for the system being serviced.