Marine Sea Water Mastic Sealants

We stock specialist marine grade, specially resistant to sea water, in silicone polyurethane and polymer based sealants from Sika Everbuild, Otto Chemie, C-Tec CT1 and Dow Corning Geocel, for use on boats and other marine applications. From simple crack repairs to large glass remedial works on boats and ships, sealing around port holes, fixtures & fittings, Sealants Online have a boat or marine silicone or hybrid mastic joint sealant to seal your boat or ship and make it watertight, safe and secure.