Eaton 4629X8 Nitrile O-ring 0.489 in Id X 0.629 in Od

Product Description

The EATON 4629X8 is a Buna-N (nitrile butadiene rubber) O-ring used to create leak-free seals in fluid and pneumatic systems. It features a round cross section and measures 0.489 inches inside diameter, 0.629 inches outside diameter, and 0.07 inches in cross-section thickness. The black nitrile compound offers solid resistance to petroleum-based fluids, making it a dependable choice for hydraulic, plumbing, and HVAC seal applications. Plumbers, HVAC technicians, and hydraulic system mechanics install this type of O-ring as a static or dynamic seal at fittings, valve bodies, and porting interfaces. Sold individually per package with a minimum order quantity of 25 units.

This O-ring is suited for use in residential and commercial applications where a compact, precision-dimensioned nitrile seal is required. Common install scenarios include valve stem seals, hydraulic fittings, refrigeration service ports, and plumbing connection points where the bore diameter matches the 0.489 inch ID specification. Its nitrile material handles contact with oils, fuels, and water-based fluids across a broad service range, making it a standard replacement seal stocked by trade professionals for routine maintenance and repair work.

Key Features

• Buna-N (nitrile butadiene rubber) material provides resistance to petroleum-based fluids and oils
• 0.489 inches inside diameter and 0.629 inches outside diameter for precise dimensional fit
• 0.07 inches cross-section thickness with round cross-section geometry
• Black color for standard identification in nitrile seal applications
• Lightweight at 0.01 pounds for easy handling and storage in bulk quantities

Compatibility

Designed as a standard-dimension nitrile O-ring replacement for fluid and pneumatic system fittings, valves, and porting interfaces requiring a 0.489 inch ID seal.

Installation Notes

This O-ring is typically installed by licensed plumbers, HVAC technicians, or hydraulic system mechanics. Always depressurize the system and shut off fluid supply before removing the existing seal or disassembling the fitting. Inspect the mating groove for debris, nicks, or corrosion before seating the new O-ring. Avoid twisting the O-ring during installation; a light application of compatible lubricant helps seat it evenly without distortion.