CRL professional quality Silicone Sealant is available for small jobs or over-the-counter retail sales. It has the same professional acetic cure formula as our 33S Silicone, and it meets the same exacting standards and specifications, so it is a proven product you can use or sell with complete confidence. The tubes are blister carded in an attractive retail package that includes a screw-on tapered nozzle. Basic Uses CRL <B>22C Clear</B>: Use as either an adhesive or sealant. High tensile strength withstands the effects of even the harshest weather. Repairs household items. <B>22AL Aluminum</B>: Use this to repair rain gutters, storm windows, patio doors, and metal awnings. It is an excellent seam sealer for aluminum window joints and mobile home panels. <B>22BL Black</B>: Seals and repairs many rubber items in autos. Stops leaks in doors and windows, or trunk lid gaskets. <B>22W White</B>: Our mildew-resistant formula caulks bathtubs, sinks, tile, and shower stalls. <B>55RED</B>: High-Temp up to 600°F (315°C) Silicone Gasket sealant for resisting high temperature applications and makes in-place seals for so many automotive uses. Resists the effects of heat, regular and synthetic oils, grease, antifreeze, and transmission fluid.