Image API Sump Flange Gasket Markets Petroleum Cargo Tanks Jump to Section Product Options Related Products Product Options Part Number Thickness Size ID OD Material 40364BL 1/8" 3" 5" 7-1/4" Baylast™ 40364TF 5/32" 3" 5" 7-1/4" PTFE with soft fiber core 40323BL 1/8" 4" 6.125" 8-1/4" Baylast™ 40323TF 5/32" 4" 5.875" 8-3/8" PTFE with soft fiber core Related Products Image API Load Only Valve Image API Load/Unload Valve Image TTMA Flange Gasket