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The 3M 7000042727 is a marine-grade adhesive sealant designed for demanding applications on boats and watercrafts. This black sealant forms an extremely strong, flexible bond that retains its integrity above or below the waterline. With excellent resistance to weathering, saltwater, shock, vibration, and structural movement, it effectively seals fiberglass decks to hulls, wood to fiberglass, portholes, deck fittings, and hull seams.
Easy to apply with a manual caulking gun, this sealant remains workable for up to 4 hours, allowing ample time for tooling and shaping. It will not sag or flow in vertical or horizontal seams, making it ideal for sealing various marine components like centerboard trunks, struts, stern joints, and deck housings.
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