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Proper surface preparation is essential for marine adhesive performance, requiring light abrasion with Scotch-Brite or wire wool to remove oxide layers on aluminum or gel coat without creating deep striations.1:16 Solvent cleaning follows, using specific products like Super Remover 208 for general cleaning or Super Activator 205 for non-porous substrates to promote adhesion.3:12 When applying sealants, cut the nozzle into a V-shape to ensure a triangular bead that collapses and wets both surfaces during compression.11:23 To maintain the flexibility required for structural bonds, use rubber spacers to prevent squeezing out all the adhesive.13:00 For removable fittings, use a butyl-based sealant like SikaLastomer 710, which acts as a gasket and allows for future disassembly.14:42 General-purpose sealing uses 291i, while structural bonding requires 292i.6:15 Plastic windows require the flexible 295UV to accommodate thermal expansion.7:01 Finishing beads can be smoothed using a dedicated tool or a simple mixture of water and dish soap.17:24 Proper preparation and application techniques significantly improve the longevity and effectiveness of marine bonds and seals.

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