CONSTRUCTION The heart of the fuel cell is the bladder (shown below in green). This component undergoes thorough testing and carries the critical certifications. Radium RA-series bladders are made from a special polymer that is resistant to ALL fuel types (gasoline, diesel, AV gas, E15, E85, ethanol, methanol, etc). SIZES The manufacturing process for these fuel cell bladders inherently require large tolerances creating a variance in physical size. The volumes listed below are the expected ranges for each bladder. NOTE: These measurements do not account for any objects inside the fuel cell.20-0606Gallons: 5.4 - 6.0Liters: 20.3 - 22.720-0610Gallons: 9.2 - 10.0Liters: 34.8 - 37.920-0611Gallons: 10.3 - 10.5Liters: 38.9 - 39.720-0614Gallons: 13.7 - 14.0Liters: 51.9 - 53.020-0622Gallons: 21.5 - 22.0Liters: 81.5 - 83.3 INCLUDED-Seamless Polymer Bladder-Explosion Suppressing Anti-Slosh Foam-Powder Coated Aluminum Enclosure-Anodized Aluminum Nut Ring-Removable Inspection Plate-FKM 6x 10 24-bolt Gaskets, x 2-Stainless Steel Hardware -Certification of Conformance