I did use a permanent marker to match my convertible to to the glued glass window

Can I use this as a glue/sealer on my wooden hot tub?

This is low strength. I would choose at least a medium strength silicone sealer.

Will this work to seal the top on a raised roof van?

3M Marine 4000 UV Adhesive is an excellent UV resistant caulk. The 4000 is especially designed for fiberglas and teak. If you want the toughest structural waterproof joint use the 3M 5200. Do not use the 5200 if you plan to take the raised part off. Once cured the 5200 forms a tenacious glued together joint.

does this caulk contain polyurethan?

No, unless it goes by another name. I did not see it listed on the label. -Jim

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Marine Adhesive Sealant 4000 UV, PN06580, White, Medium Strength Flexible Waterproof Adhesive Sealant for Boats and RVs, UV Resistant, Cures in 24 Hours, 295 mL Cartridge, 10 Fl Oz (Pack of 1)

Marine Adhesive Sealant 4000 UV, PN06580, White, Medium Strength Flexible Waterproof Adhesive Sealant for Boats and RVs, UV Resistant, Cures in 24 Hours, 295 mL Cartridge, 10 Fl Oz (Pack of 1)

Product ID: 9786698

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⏳Cures fully in 24 hours

⚓Medium-strength flexible bond

☀️Superior UV resistance

Description

⚓ Seal your adventure with confidence—UV tough, flexible, and fast!

SUNPROOF SEALANT - Exceptional UV resistance keeps your seal intact and color stable above and below water
FLEXIBLE DURABLE - Elastomeric adhesion absorbs shock, vibration, and movement without cracking
FAST CURING FORMULA - Achieves full cure in just 24 hours to get your vessel back in action quickly
PAINT READY IN MINUTES - Forms a protective skin in under an hour and accepts water-based paints immediately
VERSATILE MARINE BONDING - Securely seals portholes, deck fittings, and more while allowing easy disassembly

Marine Adhesive Sealant 4000 UV is a medium-strength, flexible, waterproof sealant designed for boats and RVs. It offers excellent UV resistance and color stability above and below water, cures fully within 24 hours, and remains paintable shortly after application. Ideal for sealing portholes, deck fittings, and other marine hardware while allowing for future disassembly.

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