Pelton & Crane Delta 8" (AE), Delta Q8 & XL8, Validator 8 & Plus Photo directions of gasket installation Easy Installation Time to clean your machine with single packet cleaner? OEM Part #1539241 / 019613 Is your sterilizer not coming up to proper pressure? It might be as simple as replacing the door gaskets. This is easy to do yourself and keeps your machine sterilizing properly. Most manufactures recommend replacing sterilizer door gaskets at least once every 4 months. Can’t remember the last time you did it? It’s time! * Model(s) This Part Fits: Delta 8" (AE), Delta Q8, Delta XL8, Validator 8, Validator 8 plus * OEM Part #1539241 / 019613 * Size: 9.750" OD * Fits: Door *