3M PN05260 - Fast Cure Marine Grade Adhesive & Sealant 4200FC in White - 2.97 fl. Oz (88 ml) 7000149601

3M PN05260 - Fast Cure Marine Grade Adhesive & Sealant 4200FC in White - 2.97 fl. Oz (88 ml) 7000149601

3M SKU: AD SEA PN05260
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Marine Adhesive Sealant | 3M 4200FC

3M™ Marine Adhesive Sealant Fast Cure 4200FC, White, 2.97 fl oz (88 mL)

A fast-curing, one-part polyurethane adhesive sealant for flexible, watertight and weather-resistant bonding in marine applications. Its medium-strength bond helps secure marine hardware while allowing parts to be disassembled when service or replacement is required.

Cure profile
1 hr tack-free
Typical full cure
24 hours
Package size
2.97 fl oz / 88 mL
Order unit
Each
6 tubes per manufacturer case

Why choose 4200FC?

  • Fast curing: develops a tack-free surface in approximately 1 hour and typically cures in 24 hours.
  • Flexible adhesion: helps accommodate stress caused by shock, vibration, swelling and shrinking.
  • Watertight sealing: helps form weather-resistant seals on joints and boat hardware.
  • Medium strength: supports secure bonding while allowing for disassembly of parts.
  • One-part polyurethane: moisture-curing formula is ready to use without mixing.

Marine applications

3M™ 4200FC is designed for marine bonding, bedding and sealing work where a flexible, serviceable seal is needed.

Portholes Deck fittings Rub rails Screw holes Stanchion supports Through-hull fittings Access plates Stern joints

Suitable substrates

The sealant is formulated for good adhesion to common marine substrates including wood, fiberglass, gelcoat, plastics and metals. It can be used on joints and boat hardware above and below the waterline when applied according to the product instructions.

Application guidance

01

Prepare the surfaces

Remove dirt, oil, old sealant and other contamination. Surfaces should be sound and properly prepared before application.

02

Apply a continuous bead

Apply by hand or pressure caulk, placing enough sealant to create continuous contact around the joint or hardware.

03

Assemble and tool

Assemble parts while the sealant is workable. Tool or remove excess material according to the product instructions.

04

Allow to cure

Allow approximately 24 hours for typical full cure. Actual cure time can vary with bead depth, temperature, humidity and moisture availability.

Safety information

Read the product label and Safety Data Sheet before use. The 3M Canada SDS classifies this product with respiratory and skin sensitization hazards and identifies additional health hazards related to inhalation and prolonged or repeated exposure.

Use adequate ventilation. Do not breathe vapours. Wear suitable protective gloves and use respiratory protection when ventilation is inadequate. Wash exposed skin after handling and keep the product out of reach of children.

View 3M Safety Data Sheet
Technical specifications and ordering information
Product 3M™ Marine Adhesive Sealant Fast Cure 4200FC
Color White
Package size 2.97 fl oz (88 mL)
Package format Tube
Adhesive type Polyurethane
Application method Hand or pressure caulk
Tack-free time Approximately 1 hour
Cure time 24 hours
Full cure rate More than 4 mm per 24 hours
Hardness 40 Shore A
Tensile strength 300 psi
Modulus at 100% 150 psi
Solids by weight Approximately 90%
Order unit Each
Manufacturer case pack 6 each
3M Catalogue Number PN05260
3M Stock Number 7000149601
UPC, each 00051135052600
UPC, shipper case 50051141098550

Frequently asked questions

What is 3M 4200FC used for?

It is used for marine bonding, bedding and sealing applications such as portholes, deck fittings, rub rails, screw holes, stanchion supports, access plates and through-hull fittings.

Can 3M 4200FC be used above and below the waterline?

Yes. The product is designed to help form watertight, weather-resistant seals on marine joints and hardware above and below the waterline.

Is 3M 4200FC removable?

Its medium-strength formulation allows bonded parts to be disassembled, making it suitable for marine hardware that may require future service or replacement.

How long does 3M 4200FC take to cure?

The sealant is typically tack-free in approximately 1 hour and reaches a typical full cure in 24 hours. Cure conditions vary with bead depth, temperature, humidity and moisture availability.

How is this product sold?

The smallest saleable unit is one 2.97 fl oz (88 mL) white tube. The manufacturer lists 6 tubes per case.

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