2 Pack Toilet Tank to Bowl Screws with Cone Rubber Sealing Gasket, Flat Gasket and Extra Long Lock Nuts for Toilet Tank Bolts and Seat Screws: Amazon.com: Tools & Home Improvement
Sealing Screws and Bolts | Products | ZAGO | Seal Screws, Seal Bolts, Seal Nuts
10x F-Connector 7 mm with Rubber Seal Wide Nut for Coaxial Antenna Cable SAT Cable BK Systems HB Digital Set HB Digital : Amazon.co.uk: Electronics & Photo