Silicone sealant Comes in a box with permanently attached sponges for precision application Water repellant Extends the life of your gasket Product size 2.4" X 2.4" X 1.02" Inches (62 X 62 X 26mm) Because our Silicone Sealant for watch gaskets is water repellent, it helps keep gaskets and o rings lubricated, in good shape and flexible. This results in a lighter and longer seal. Sponges are permanently attached inside and impregnated with silicone grease so there is less waste and never grease where you don't need it. Silicone grease is the best gasket sealant available.