Value Collection ZMSCH2.5X13 Buna-n O-ring 13mm Id

Product Description

The VALUE COLLECTION ZMSCH2.5X13 is a round cross-section O-ring made from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid sealing applications. It measures 13 mm inside diameter, 18 mm outside diameter, and 2.5 mm thick. The black Buna-N compound delivers excellent resistance to petroleum-based fluids, strong compression set performance, and good tear and abrasion resistance. Rated at Shore 70 hardness, this O-ring operates across a wide temperature range of -40 degrees F to 250 degrees F. Licensed plumbers, HVAC technicians, and industrial maintenance professionals specify Buna-N O-rings for high-contact sealing environments where petroleum fluid exposure is expected.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, plumbing fittings, fuel handling equipment, and general fluid-sealing applications where contact with petroleum products is anticipated. Its compact metric dimensions make it a common choice for both residential and light commercial service work involving valves, pumps, manifolds, and pipe couplings. It is not approved for use with ozone-generating environments or direct sunlight storage, and should be kept away from motors or electrical equipment that may produce ozone during storage. Sold in packages of 100, this SKU is practical for service shops maintaining a working O-ring inventory.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — excellent resistance to petroleum products, oils, and fuels
• Shore 70 hardness rating provides firm compression set and long-term seal integrity
• Rated for service from -40 degrees F to 250 degrees F
• Round cross section for reliable seating in standard O-ring grooves
• Meets SAE and MIL-Spec standards
• Sold in a 100-piece package with a minimum order quantity of 1

Compatibility

Compatible with petroleum products and petroleum-based fluids. Designed for use in standard O-ring groove applications where Buna-N elastomer is specified. Not recommended for use with ozone, strong oxidizing agents, or non-petroleum synthetic fluids where Buna-N is unsuitable.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance professionals. Always depressurize and shut off fluid supply to the system before replacing any O-ring seal. Inspect the groove and mating surfaces for nicks, burrs, or corrosion before seating the new O-ring. Avoid storing Buna-N O-rings in direct sunlight or near motors and other equipment that may generate ozone, as ozone exposure degrades nitrile rubber over time.