Bk 888-241 1 in Rubber Washer Dielectric Union

Product Description

The BK 888-241 is a replacement rubber washer designed for 1-inch galvanized dielectric unions. Made from Buna-N rubber, this washer provides a reliable seal within the union body, preventing leaks at the joint where galvanized and copper or dissimilar metal piping meet. Dielectric unions isolate dissimilar metals to slow galvanic corrosion, and the washer is a critical sealing component in that assembly. Plumbers and pipefitters install this part during routine union service or when an existing washer shows wear, cracking, or compression set. Sold individually.

This washer fits 1-inch dielectric union assemblies used in residential and light commercial plumbing systems. It is suited for water service lines, water heater connections, and any application where a dielectric union joins galvanized steel pipe to copper or other dissimilar metal pipe. The Buna-N compound offers resistance to water and moderate temperatures typical of domestic hot and cold water systems.

Key Features

• Buna-N rubber construction for water-resistant sealing in dielectric union assemblies
• Sized for 1-inch union bodies
• Direct replacement for worn or damaged OEM-style washers
• Compatible with Mueller, BK, and other standard brand dielectric unions
• Lightweight at 0.011 pounds for easy handling and stocking

Compatibility

Designed as a replacement washer for Mueller, BK, and other standard-brand 1-inch galvanized dielectric union assemblies.

Installation Notes

Installation is performed by a licensed plumber or qualified pipefitter. Shut off the water supply and relieve system pressure before disassembling the union. Inspect the union seat and threads for damage before installing the new washer. Follow applicable IPC and local plumbing code requirements when servicing dielectric union connections.

Technical Specifications

• Material: Buna-N Rubber
• Size: 1 inch
• Weight: 0.011 pounds
• UPC: 00032888882416
• Sold As: Each

Standard Information

• Brand: BK
• Manufacturer Part Number: 888-241