Larsen Supply Co. 122389 Cone Washer Kit 7/16 Inch 4 Pack

Product Description

The LARSEN SUPPLY CO., INC. 122389 is a 4-piece cone washer and friction ring assortment designed for use with 7/16 inch metal supply tubes. The kit includes 2 cone washers and 2 friction rings, providing the sealing components needed to make leak-free compression-style connections on older metal supply tube installations. This type of fitting hardware is a standard repair and replacement item for plumbing service calls involving legacy faucet supply lines. Licensed plumbers and experienced DIYers stock these as routine consumables when servicing older residential fixtures.

This kit is suited for residential plumbing applications where old-style metal supply tubes with 7/16 inch compression fittings are still in place. It is commonly used when reseating or replacing supply tube connections under sinks, on toilet fill valves, or at faucet inlets where the original cone washer or friction ring has deformed, cracked, or failed. The carded retail packaging makes it appropriate for counter or peg display in supply houses and hardware stores.

Key Features

• Includes 2 cone washers and 2 friction rings in a single kit
• Sized for 7/16 inch old-style metal supply tubes
• Restores sealing integrity to compression-style supply tube connections
• Carded packaging for easy storage and point-of-sale display
• Compact and lightweight at 0.22 pounds for toolbox stocking

Compatibility

Designed as a replacement sealing kit for old-style metal supply tube connections using 7/16 inch compression fittings, typical of legacy residential faucet and fixture installations.

Installation Notes

Installation is performed by licensed plumbers or qualified service technicians. Shut off the water supply at the stop valve before disconnecting any supply tube. Hand-tighten the compression fitting first, then snug with an adjustable wrench — do not overtighten, as cone washers can deform under excessive force. Work must conform to applicable local plumbing codes and IPC guidelines.