Mudder2 Pieces 385311462 and 385316140 RV Toilet Rubber Seal Toilet Flush Ball Seal for Sealand Mansfield VacuFlush RV Camper, Compatible with 2010, 510/506+, 510+/1006,1008/EcoVac 146-149

For Dometic 511+ RV toilet. Difficult part is disassembling the toilet to replace the gaskets. and of course the reassembly. Make sure the holes and notches line up where they should, and the retainer rings are positioned properly and re-clamped properly. Per instructions (third-party online), use plenty of silicon plumbers' grease.The gaskets themselves fit well and seal well. They do their job well. What more can be said?

Very easy to install, perfect fitment. I even saved the number from the company so if it happens again , I will know where to get the right replacement gasket set. Got it really quick to.

This gasket has superseded the old gasket so it would be very helpful to have instructions on which gasket goes on first. FYI….the thin gasket goes on the bottom. I replaced the old gasket on my toilet with this and I had to remove the large plastic ring with the small gasket in the center and then this new two piece gasket installs with the thin one first and the thicker one on top.Great quality but adding instructions for those who use this as the superseded gasket would be perfect. “ Thin gasket goes on the bottom!”

Perfect fit. Just make sure you have them placed in the correct order because each is slightly different in size .

perfect fit

Simple installation. No more smell

Works and no more leak. Seems the exact same as Dometic/Sealand for 25% of the price.

It’s not a perfect fit for the replacement I Got I should I just spent the money and got the real brand name. Toilet still doesn’t hold water only a little better.