40IV60016 Dixon Valve 6" Sanitary FKM I-Line Gasket (1/16" Thickness) - BlackFeatures: Color code: One white dot, One yellow dot Gasket Color: Black. Meets 21CFR 177. 1550. Passed USP class VI cytotoxicity testing. 1 16" thick. Peroxide cured. Part Number Tube OD Thickness Color Code Weight (Lbs.) 40IV100 1" 3 32" One white dot, One yellow dot 0. 0050 40IV150 1 1 2" 3 32" One white dot, One yellow dot 0. 0050 40IV200 2" 3 32" One white dot, One yellow dot 0. 0050 40IV250 2 1 2" 3 32" One white dot, One yellow dot 0. 0100