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Sale! BOSS 140 Multi-Seal Marine Boat Decking Sealant
BOSS Products


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One component, mildew resistant, moisture curing adhesive sealant

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BOSS® 140 Multi-Seal® Marine Boat Decking Sealant
BOSS – 140 Multi-Seal® is a one component, mildew resistant, moisture curing adhesive sealant formulated with USP™ Technology to withstand harsh environmental conditions. BOSS® 140 Multi-Seal® remains flexible, allows movement and has excellent resistance to weathering and water. It can be applied and tooled under most weather conditions. This adhesive sealant is paintable with most latex base paints*. BOSS – 140 Multi-Seal® is designed to produce a flexible joint sealant in most applications without a primer. Has excellent adhesive bonding to various substrates including fiberglass, steel, aluminum, most plastics and porous and nonporous surfaces.

• VOC Compliant in all 50 States
• Ease of use, one-part sealant, no mixing required
• Good weatherability-virtually unaffected by sunlight, rain snow, ozone and temperature extremes
• Good UV resistance and color stability
• Long life reliability; cured sealant stays flexible without tearing, cracking, drying out or becoming brittle
• Non-yellowing and non-staining
• Sandable and paintable with most latex base paints
• Free from solvents and isocyanates
• Non-corrosive and non-flammable
• Primerless adhesion to damp and non-porous surfaces
• No in-gassing
• Temperature resistant up to 200 F
• Permanently flexible
• Can be used under water when a permanent gasket seal is required between two substrates



To view the most recent Technical Data Sheet, please click here.

Weight 16 oz
Dimensions 2 x 2 x 12 in
Product Color

Black, White

Product Size


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