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3M™ Marine Adhesive/Sealant

Provides Secure Bonds, In the Water or Out

3M marine sealant

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3M™ Marine Adhesive/Sealant

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Low Price GuaranteeWhat's special about marine sealant?

  • GSA approvedResistance to the elements (sun, rain, salt water, etc)
  • Flexibility permits movement of structure
  • Click for More Features

The seal is extremely strong. Stays flexible too - allows for structural movement. Has excellent resistance to weathering and salt water. Remains flexible with excellent resistance to the marine environment. Adheres to bare and painted metal, fiberglass, glass, non-oily woods and many plastics and abraded rubbers. Easy to apply with manual caulking gun. Remains workable with trowel or spatula up to four hours after application. Won't sag or flow in vertical or horizontal seams.

Stress caused by shock, vibration, swelling or shrinking is effectively absorbed.
Check the bonding and sealing jobs this product can handle for you:
fiberglass deck to fiberglass hull, wood to fiberglass, portholes and deck fittings, motors on fiberglass transoms, under moldings, hull seams above and below water line. Center board trunk joints. Between struts and planking. Stern joints. Deck housing, etc.

Questions to consider:

  1. Am I making a structural, general, bedding, or sealing bond?
  2. Will I ever have to disassemble?
  3. Have I cleaned and/or scuffed the surfaces to be bonded/sealed?
  4. How soon do I need the adhesive sealant to skin over? over?
  5. Do I need to apply a primer?
  6. How much do I need? (Hint: a 1/10th gallon container provides 30 linear feet @ 1/4" bead, 120 feet @ 1/8" bead)

 

  3M-MGS-S
Application Temperature 40° - 100° F
(5° - 38° C)
Consistency Non-Sagging Paste
Color White Clear
Tack-Free * 20 Minutes
Cure *** 24-48 Hours
Tensile Strength 220 psi
% Elongation Before Break 350%
Can be Sanded No
Discoloration Resistance Excellent
Gelcoat B
Fiberglass B
Wood B
Metal B
Rubber B
Plastics B

Protect from direct sunlight and rain until cured.

H = High Strength Bonding
G = General Bonding
B = Bedding Sealing
* at 75° F/50% RH
** Primer recommended
*** at 1/4" depth

 

PART # DESCRIPTION COLOR PRICE
3M-MGS-S Marine Grade Silicone Sealant 1/10 Gallon Clear
Qty:  
3M-MGS-A-06500 Marine Grade Adhesive Sealant 1/10 Gallon White
Qty:  
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