Ullnosoo Flush Valve Seal for Mansfield, 3 Pack Upgraded Silicone Material Toilet Tank Gasket Replacement Parts for 210 and 211, Equivalent to 630-0030

Excellent fit for my toilet. Easy to install and is still working months after installation.

Surprisingly, my local big box hardware stores didn’t have any of these in stock. Ended up picking some up from Ace after placing the Amazon order but decided not to cancel the order and just having a couple in case of emergency. Good thing, the one from Ace didn’t fit well at all and actually still left the toilet with a small leak. Nothing major, but still not sealed off completely. Decided to use the ones off Amazon and it the leak was solved! Comparing them side to side you can see the difference in thickness and fit.

My toilet inner parts broke and were not available locally; we thought we would have to buy an entirely new toilet. Replacement parts were available from Amazon. we ordered and they arrived promptly, were easy to install and we saved a lot of money. Very satisfied.

Delivered on time and at a lower price that an earlier supplier.

Arrived very fast. They weren't wide enough for my system, but two together seem to be doing the trick.