Plumb Shop Div Brasscraft 645335 Snap on Seat Disc

Product Description

The PLUMB SHOP DIV BRASSCRAFT 645335 is a rubber snap-on and screw-on seat disc designed for toilet flush valve repair. This small but critical component seats against the valve to create a watertight seal, stopping water flow when the flush cycle completes. It ships with a plastic screw adaptor, giving the installer two mounting options in a single part. Licensed plumbers and experienced DIYers reach for this disc when a running toilet or weak flush traces back to a worn or cracked seat disc in the actuating unit assembly.

This seat disc is designed for use with American Standard brand toilet actuating units. It fits into residential toilet flush valve assemblies where the original rubber disc has deteriorated, causing the toilet to run continuously or fail to hold water in the tank. The included plastic screw adaptor expands fitment to both snap-in and screw-on valve configurations, making this a compact dual-purpose repair solution. One disc and one adaptor are included per card.

Key Features

• Rubber construction for durable, watertight valve seating
• Snap-on and screw-on mounting compatibility in one part
• Includes plastic screw adaptor for screw-on installations
• Designed specifically for American Standard toilet actuating units
• Single-unit packaging — one disc per card, sold individually

Compatibility

Designed for use with American Standard brand toilet actuating units. Includes a plastic screw adaptor to support both snap-on and screw-on seat configurations.

Installation Notes

Installation is typically performed by a licensed plumber or a competent DIYer familiar with toilet tank components. Shut off the water supply at the stop valve below the tank and flush to drain the tank before beginning any work. Remove the old disc, verify the valve seat is clean and free of debris or scale, then seat the new disc firmly before restoring water supply and testing for leaks. Follow all applicable local plumbing codes, including IPC provisions for fixture repair.