Sikaflex 291
Sika Sika
  • Sikaflex 291
  • Sikaflex 291 - Small

Sikaflex 291

Sika 291 is a Professional grade Marine Adhesive/Sealant used by boat builders and yards to bond and bed boat components structurally. Fast strength build-up overnight. Use above and below the waterline. Comes with nozzle. All purpose adhesive sealant, bond to hull & structural members. Bedding Compound, light bonding, fast cure polyurethane sealant.

NOTE: SIK-291201W is a 20oz. Sausage Pack, which is NOT compatible with standard caulking guns.

 
 
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Tech Spec Product Info User Generated Content
    Technical Specifications
  • Density: 10.3 lbs per gal
  • Tack Free Time: 60 min.
  • Rate of Cure: 1/4-in x 1/4-in bead 9 days at 40F/30% R.H.
    1/4-in x 1/4-in bead 4 days at 73F/50% R.H.
    1/4-in x 1/4-in bead 3 days at 73F/70% R.H.
    1/4-in x 1/4-in bead 1 day at 100F/75% R.H.
  • Shore A Hardness (ASTM D2240): 45-50
  • Elongation at Break (ASTM D412): >600%
  • Tensile Strength (ASTM D412): 221 PSI
  • Lap Shear Strength (ASTM D1002): 165 PSI
  • Peel Strength: 35 lbs/in on fiberglass, 25 lbs/in on gelcoat
  • Application Temperature: 40F to 110 F
  • Service Range: -40F to 190 F
  • Color: Black, White
  • Sandable, paintable and is waterproof
  • Below Water Line (yes/no): Yes
    BRAND: Sika
    Material: Polyurethane
    Rate Of Cure: Fast
    Strength: Good
    Type: Adhesive Sealant
    Usage: Bonding
    4.8 21

    Stuff sticks to everything

    5

    Used this for sealing thru hull bolts and other fittings. Seals great. Wear gloves.

    Jim

    Cleveland, ohio

    true

    Good sealant with many applications

    5

    Great product for bedding and sealing hardware above and below the waterline. A good medium strength polyurethane and comes in colors. It doesn't have any UV propertiesand if that's a requirement pay to exposed aera with a UV sealant.

    Dave F

    Tiverton RI

    true

    GREAT STUFF..... EASY TO APPLY.....

    5

    GREAT STUFF..... EASY TO APPLY.....HIGHLY RECOMMENDED

    FRANK

    Punta Gorda FL

    true

    It worked

    5

    Sealed my instrument panel from the weather. Waiting to see when I remove the panel will it be easy to remove

    Boats

    Cranberry Lake, NY

    true

    Like the product

    5

    I wish JD offered the option of shaking the paints they sell.

    Bob

    Rochester, ny

    true

    Excellent Product

    5

    Used this on underwater seams where the plank ends meet the transom. Really good adhesion, very flexible. I'll use this wherever I used to use Life- Caulk, much better. I fully recommend this for bedding fixtures and hardware also. Good stuff!

    Captain Nemo

    Lyons, NY

    true

    Good Sealant

    5

    Great for sealing deck fuel hatches.

    Aqua Therapy

    Orange Beach, AL

    true

    the product is what it is, easy to workwith and works as lis

    3

    On ordering these items, I have always ordered white from every vendor. When I ordered these I made sure I noted white as color of choice. When I got order they were black in color. Product was coded incorrectly and now I have a case of a product I cant use.

    KC

    South Dakota

    true

    Rebeding Deck Screws

    4

    Was not packaged well by Jamestown , almost not usable!!!

    Cap'n Ed

    Toms River, NJ

    Perfect sealant

    5

    Use this sealant to install thru hulls and seacocks.

    DAVIDL

    WINTERVILLE, NC

    true

    Sikaflex 291

    4.821

    100.0

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