Eaton 4629X12 O-ring 0.739 in Id Buna-n Black

Product Description

The EATON 4629X12 is a Buna-N (nitrile butadiene rubber) O-ring used to create a reliable static or dynamic seal in fluid and pneumatic systems. It measures 0.739 inches inside diameter, 0.879 inches outside diameter, and 0.07 inches cross-section thickness. The round cross-section profile seats evenly in standard O-ring grooves, maintaining a leak-free seal under pressure. Black in color, this O-ring is manufactured from Buna-N, a material well-suited for use with petroleum-based fluids, water, and many common industrial media. Licensed plumbers, HVAC technicians, and fluid-systems mechanics install this type of seal when servicing valves, fittings, pumps, and related components.

This O-ring is appropriate for residential and light commercial applications wherever a standardized seal of this size is required. Common installation scenarios include valve body rebuilds, pump seal replacements, and threaded fitting connections in plumbing, HVAC, and general fluid-handling assemblies. Buna-N material makes it a practical choice for systems running water, oils, or hydrocarbon-based fluids within the material's rated temperature and chemical compatibility range. Always verify the groove dimensions and fluid compatibility before installation.

Key Features

• 0.739 inches inside diameter for precise groove fitment
• 0.879 inches outside diameter with 0.07 inches round cross-section
• Buna-N (nitrile butadiene rubber) construction for compatibility with petroleum fluids and water
• Round cross-section seats uniformly in standard O-ring grooves
• Black color for easy visual identification during assembly

Compatibility

Designed as an OEM-style replacement seal for valves, pumps, fittings, and fluid-handling components requiring a 0.739 inches ID x 0.879 inches OD Buna-N O-ring with a round cross-section profile.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanic familiar with sealing system service procedures. Always depressurize and isolate the system before removing or installing O-rings. Lightly lubricate the O-ring with a compatible grease or fluid to prevent tearing during installation. Inspect the groove for nicks, burrs, or debris before seating the new seal.