4-piece seal kit 272475S 692285 272475, compatible with models 21B706 and 21B707--DTEKGAZ

All plumbing or mechanical connections need to be sealed using a rigid or flexible waterproof barrier. Static and dynamic connections can be made watertight using fibre or rubber washers, O rings or lip seals, all of which need to chosen to match the type of liquid and pressure they are required to contain.