Description Fits early model Milk Tanks 500 - 8000 Gallon Serial Numbers: 811001 Model number series manufactured in the 1981 through 2006 fits 80 inch diameter tank body Old Surge part number 85260 Special Order and Not Returnable Related items; Manhole cover gasket; 7750-0086-131 sunset / surge gasket 7000370 Mueller new style gasket also fits - M-31452 8/23
