3M Marine Sealant 101
Chemically cures to form a firm; rubbery watertight seal. Non-sagging; non-shrinking formula becomes tack free in 5 hours and remains permanently flexible. Seals between mechanically fastened joints on wood; fiberglass; metal and most plastics; above and below the waterline. Excellent resistance to chemicals; weathering; salt water; and stresses caused by joint movement.