3M 06560 Marine Adhesive Sealant 4200FC Fast Cure White 10 oz Cartridge | Strong Serviceable Polyurethane | Rub Rails, Stern Joints, Deck & Through-Hull Fittings | Above & Below Waterline

3M 06560 Marine Adhesive Sealant 4200FC Fast Cure White 10 oz Cartridge — Strong Serviceable One-Component Moisture-Curing Polyurethane | Rub Rails, Stern Joints, Deck & Through-Hull Fittings | Above & Below Waterline

3M Marine Adhesive Sealant 4200FC Fast Cure White is a one-component, strong, moisture-curing, gap-filling polyurethane adhesive sealant that delivers strong, flexible bonds to aluminum, wood, gel coat, and fiberglass. Forms watertight, weather-resistant seals above and below the waterline. Flexible cured bond dissipates stress from shock, vibration, swelling, and shrinking. Serviceable — bonds can be disassembled for maintenance and repair. Fast Cure formula: tack free in 1 hour, full cure in approximately 24 hours. White. 10 oz cartridge for standard caulking gun.

Part Specifications

• Part Number: 3M-06560
• Product Line: 3M Marine Adhesive Sealant 4200FC Fast Cure
• Color: White
• Size: 10 oz cartridge (requires standard caulking gun)
• Chemistry: One-component, moisture-curing polyurethane
• Bond Strength: Strong — serviceable (can be disassembled for maintenance and repair)
• Substrates: Aluminum, wood, gel coat, fiberglass
• Application: Above and below the waterline
• Cured Properties: Flexible, watertight, weather-resistant seal; stress dissipation from shock, vibration, swelling, and shrinking
• Tack Free: 1 hour
• Full Cure Time: Approximately 24 hours
• Typical Applications: Rub rails, stern joints, deck fittings, through-hull fittings, access plates, and hardware installations on white or light-colored gel coat
• Also Available — 4200FC White: 3M 05260 Marine Adhesive Sealant 4200FC White 3 oz Squeeze Tube
• Also Available — 4200FC Black: 3M 06564 Marine Adhesive Sealant 4200FC Black 10 oz Cartridge

10 oz Cartridge vs 3 oz Squeeze Tube — Choosing the Right Format

The 06560 (10 oz cartridge) and 05260 (3 oz squeeze tube) are the same 4200FC Fast Cure White formula in different formats and quantities:

• 3M 06560 (this product — 10 oz cartridge, requires caulking gun): Best for full rub rail runs, multiple through-hull or deck fitting installations, production bedding work, and any application where the larger quantity reduces tube changes mid-job and lowers cost-per-oz. The standard format for professional and high-volume marine sealant work.
• 3M 05260 (3 oz squeeze tube — no caulking gun required): Best for single fitting installations, small seam repairs, and onboard emergency use where a caulking gun is not available. Higher cost-per-oz but no gun required and easier to control for small bead applications.
• Formula is identical: Bond strength, cure time, substrates, serviceability, and above/below waterline rating are the same in both sizes — choose based on volume needed and whether a caulking gun is available.

4200FC vs 4000 UV vs 5200 — Choosing the Right 3M Marine Polyurethane Sealant

• 3M Marine Adhesive Sealant 4200FC (this product — 3M-06560 White 10 oz | 3M-05260 White 3 oz | 3M-06564 Black 10 oz): Strong, serviceable — bonds can be disassembled for maintenance. Fast Cure: tack free 1 hr, full cure ~24 hrs. Best for through-hulls, deck hardware, rub rails, and fittings requiring a strong serviceable hold that may need future removal.
• 3M Marine Adhesive Sealant 4000 UV Fast Cure (3M-05280 White 3 oz | 3M-06580 White 10 oz): Medium strength, serviceable. Excellent UV resistance for UV-exposed above-waterline applications. Easier disassembly than 4200FC.
• 3M Marine Adhesive Sealant 5200 (3M-05203 White 3 oz | 3M-05220 Fast Cure White 3 oz | 3M-06500 White 10 oz): Permanent bond — separation requires cutting or grinding. For structural bonds that will never be disassembled.

Application Notes

• Requires a standard 10 oz caulking gun (not included)
• Cut the cartridge nozzle at a 45° angle to the desired bead size; puncture the inner foil seal before dispensing
• Surfaces must be clean, dry, and free of grease, oil, wax, and loose material; wipe with acetone or isopropyl alcohol and allow to dry before applying
• Apply to one or both surfaces and press together firmly; tool the exposed bead or fillet within the tack-free window (tack free 1 hour)
• Moisture initiates cure — higher humidity and warmer temperatures accelerate surface cure
• Tack free in 1 hour; full cure approximately 24 hours — do not stress the joint or immerse below the waterline until fully cured
• After use, leave the nozzle cap in place to slow skin-over of remaining product in the cartridge
• Uncured product: clean up with acetone or MEK. Cured product: must be cut or abraded for removal
• Wear gloves — uncured polyurethane is difficult to remove from skin and clothing

Additional Information

• Vendor: 3M
• SKU: 3M-06560
• Product Type: Boat & Engine Maintenance / Adhesives & Sealants
• Color: White
• Size: 10 oz cartridge
• Country of Origin: USA
• HS Code: 3506.10 (products suitable for use as glues or adhesives, put up for retail sale — verify for your import classification)

Frequently Asked Questions

Q: What is the difference between the 06560 (10 oz cartridge) and the 05260 (3 oz squeeze tube)?
A: Same 4200FC Fast Cure White formula, different size and format. The 10 oz cartridge (06560) requires a caulking gun and is suited for full rub rail runs, multiple fittings, and production work. The 3 oz squeeze tube (05260) requires no gun and is suited for single fittings, small repairs, and onboard use. Bond strength, cure time, and serviceability are identical.

Q: What is the difference between 4200FC and 5200?
A: 4200FC is strong and serviceable — joints can be disassembled with reasonable effort for maintenance and repair. 5200 is permanent — separation after full cure requires cutting or grinding and damages bonded surfaces. Use 4200FC for hardware that may need future removal; use 5200 only for permanent structural bonds.

Q: Can 4200FC White be used below the waterline?
A: Yes — rated for above and below the waterline. Allow full cure (approximately 24 hours) before immersing below the waterline. Do not stress the joint before full cure.

Q: When should I use 4200FC instead of 4000 UV?
A: Use 4200FC when you need a stronger serviceable bond for through-hulls, rub rails, stern joints, and fittings that may be below the waterline or in areas requiring more bond strength. Use 4000 UV for UV-exposed above-waterline hardware where excellent UV resistance and easier future disassembly are priorities.

Q: Does the 10 oz cartridge require a caulking gun?
A: Yes — a standard 10 oz caulking gun is required (not included). If you need to apply without a gun, the 3M 05260 3 oz squeeze tube is the same formula in a no-gun format.