Value Collection ZMSCH2X19 O-ring 19mm Id Nitrile

Product Description

The VALUE COLLECTION ZMSCH2X19 is a black nitrile butadiene rubber (Buna-N) O-ring with a round cross section, designed for static and dynamic sealing applications across industrial, plumbing, hydraulic, and fluid-handling systems. This O-ring measures 19 mm inside diameter, 23 mm outside diameter, and 2 mm thick, with a Shore A hardness of 70. Buna-N is the most widely used O-ring elastomer due to its reliable performance with petroleum-based fluids and its strong resistance to compression set, tearing, and abrasion. Licensed tradespeople and maintenance technicians working with fluid sealing, pumps, valves, and fittings regularly specify this material for its cost-effectiveness and broad compatibility.

This O-ring is suited for sealing applications in residential and commercial environments where petroleum products, hydraulic fluids, or water-based media are present. Typical installation scenarios include pump housings, valve stems, pipe fittings, and fluid system connectors where a reliable elastomeric seal is required. The rated temperature range of -40 degrees F to 250 degrees F makes it appropriate for a wide range of service conditions encountered in HVAC, plumbing, and general industrial maintenance.

Key Features

• Buna-N (nitrile butadiene rubber) construction — the most widely used O-ring elastomer for petroleum and hydraulic fluid service
• 19 mm inside diameter, 23 mm outside diameter, 2 mm wall thickness with round cross section
• Shore A hardness of 70 rated Hard for reliable compression and sealing force
• Operating temperature range of -40 degrees F to 250 degrees F
• Excellent resistance to compression set, tear, and abrasion
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products and hydraulic fluid media. Conforms to SAE and MIL-Spec standards. Not FDA approved — not intended for food-contact or potable-water applications without independent verification of local code acceptance. Should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance personnel. Always depressurize and drain the system before removing or installing O-rings to prevent injury and ensure a proper seat. Lubricate the O-ring with a compatible fluid or assembly lubricant before installation to avoid nicking or rolling during seating. Do not use with ozone-generating equipment or expose to direct sunlight during storage.