Value Collection ZMSCH70019 O-ring Dash 019 Buna-n 100 Pack

Product Description

The VALUE COLLECTION ZMSCH70019 is a Dash 019 Buna-N nitrile butadiene rubber O-ring used to create fluid-tight seals in hydraulic, pneumatic, plumbing, and HVAC systems. It measures 0.801 inches inside diameter and 0.938 inches outside diameter with a 0.0625-inch (1/16 inch) round cross section. Rated at 70 Shore A durometer hardness, this O-ring delivers excellent resistance to petroleum-based fluids along with strong compression set, tear resistance, and abrasion resistance. Buna-N is the most widely used O-ring elastomer across the trades and is a standard choice wherever mineral oils, fuels, and hydraulic fluids are present.

This O-ring is suited for residential and commercial applications involving petroleum-compatible media, including refrigerant oil circuits, hydraulic valve bodies, pump seals, and plumbing fittings. It operates across a wide service temperature range of -40 degrees F to 250 degrees F, making it appropriate for most mechanical room and field-service conditions encountered by HVAC technicians, plumbers, and industrial maintenance crews. The package contains 100 pieces, providing a practical bench stock quantity for shops and service vans.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent petroleum product resistance
• 70 Shore A durometer hardness rated Hard for reliable sealing under compression
• Round cross section, 0.0625 inches thick, conforming to Dash 019 sizing
• Service temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Packaged 100 pieces per package for efficient shop and field restocking

Compatibility

Compatible with petroleum products including mineral oils, hydraulic fluids, and fuels. Designed as a standard Dash 019 O-ring replacement for hydraulic, pneumatic, plumbing, and HVAC seal applications where Buna-N elastomer is specified. Not FDA approved; not suitable for food-contact or ozone-exposure environments. Store away from direct sunlight, electric motors, and other ozone-generating equipment.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified maintenance technicians depending on the system involved. Always depressurize and de-energize the system before replacing O-ring seals. Lubricate the O-ring lightly with a compatible fluid before seating to prevent pinching or tearing during assembly. Inspect the mating groove for burrs or damage before installing a replacement seal.