For sealing camper windows we recommend the TremPro 644 Silicone Sealant # 0160297.
The Silicone sealant is applied as a thick liquid to parts before assembly or in seams after assembly to create a waterproof bond in a variety of applications. It can seal doors, windows, vents and other areas in enclosed trailers where water could enter. view full answer...
The etrailer Trailer Coupler Lock - Flat Lip 1-7/8" and 2" Ball Couplers - Aluminum - Yellow # e98897 and the etrailer Trailer Coupler Lock for Flat Lip 1-7/8" and 2" Ball Couplers - Aluminum - Silver # e98893 is the exact same part, the only difference is what color they are powder coated. view full answer...