Value Collection ZMSCH2.5X14 O-ring 14mm Id Nbr

Product Description

The VALUE COLLECTION ZMSCH2.5X14 is a Buna-N nitrile butadiene rubber O-ring with a round cross section, designed for sealing applications across HVAC, plumbing, hydraulic, and fluid handling systems. With a 14mm inside diameter, 19mm outside diameter, and 2.5mm thickness, this O-ring fits a range of standard groove configurations. Rated for a hardness of 70 Shore A, it delivers firm compression set resistance along with strong tear and abrasion resistance. Licensed plumbers, HVAC technicians, and mechanical contractors rely on Buna-N O-rings as the go-to general-purpose elastomer for petroleum-based fluid systems.

This O-ring is suited for residential and commercial installations where petroleum-based fluids, oils, fuels, and hydraulic media are present. It performs across a wide temperature range from -40 degrees F to 250 degrees F, making it appropriate for both heating system components and refrigeration-adjacent fluid circuits. Typical applications include pump seals, valve stems, fittings, manifold connections, and threaded port closures. It meets SAE and MIL-Spec standards, supporting use in both trade and light industrial service environments.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — the most widely used O-ring elastomer for petroleum fluid compatibility
• Operating temperature range: -40 degrees F to 250 degrees F
• 70 Shore A hardness rating for firm, reliable sealing under compression
• Round cross section for consistent groove fit and even sealing pressure
• Excellent compression set, tear resistance, and abrasion resistance
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products, oils, fuels, and hydraulic fluids. Not rated for FDA food-contact applications. Should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone. Designed as a general-purpose replacement O-ring for systems requiring a 14mm ID, 19mm OD, 2.5mm thick round cross-section seal.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or hydraulic system technicians depending on the application. Always depressurize and drain the system before replacing O-rings to prevent fluid release or injury. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent tearing during assembly. Avoid stretching the O-ring beyond its natural diameter when placing it into the groove.