Toilet Seat Bumper Riser Set
A snap-apart set of four replacement toilet-seat buffers in 10, 12, 14 and 16 mm heights (20 mm flange, 14 mm register spigot), each with a blind 3.4 mm bore that takes the original seat screw or an M4 self-tapper. Replaces perished rubber bumpers that make the seat rock and slam — pick the height that closes the gap to the porcelain, snip it off the runner and screw it on; edge notches count the size (1 notch = 10 mm, 4 notches = 16 mm).
bathroom toilet-seat bumper repair