J
Jack Klarich
Guest
There is another thread on Marvel Mystery Oil. As a former designer of automated air equipment, our maint. people found that MMO would clean air operated valves and relays. I contacted MMO with the concern that it may damage O-ring and seals (some teflon), and ask for the formula. I was told that the formula was secret, but sent a written guarantee that it would not harm any seals or O-rings. I've used it for years and have not seen any damage caused by MMO.
MMO will not hurt O rings or seals IMO, Have used it for years and never had any problems:s