Replacement Inflatable Gaskets
We sell two types of gaskets. Desmopan is a food grade polymer made by Bayer in Germany. The other is white rubber which is very heavy, much thicker than a bicycle tube. Both of these materials have longer life than the commonly used vinyl gaskets.
certified food grade polymer, Desmopan.
Instructions for Assembly of Floating Lid of Variable Capacity Tank

Determining Correct Tube Size

1. Measure inside diameter of tank in inches.
2. Multiply by 2.54
3. This is diameter in cm
4. Choose matching diameter from table.

Please note that Desmopan gaskets may seem too small. They can stretch at least 10%. It is often easier to inflate the gasket prior to putting on the lid. This will stretch it and make assembly easier.

Inflatable gaskets have 30 day warranty subject to normal use and service.

2-way Air Valves for Lids
2-way valve--both vacuum and vent—made of food grade and chemically resistant plastic. The max gas flow is important when pumping out the tank. Be sure the flow rate matches or exceeds the pump speed.

Each consists of the valve with male pipe thread, a gasket, and back nut.

Air valves for lids have 30 day warranty subject to normal use and service.