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Sikaflex 291i – 300ml
Sikaflex 291i

Sikaflex 291i – 300ml

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Sikaflex 291i is a non-sag 1-C polyurethane sealant specifically developed for the marine market, which cures on exposure to atmospheric moisture and forms a durable elastomer.

Size: 300ml
Colour Options: Black, White
Units Per Pack: 12

£20.50 ex. VAT

excl VAT

Quantity:

You can now pay in 3 interest-free instalments with Klarna on checkout page.

Description

Sikaflex 291i

Sikaflex 291i is a non-sag 1-C polyurethane sealant specifically developed for the marine market, which cures on exposure to atmospheric moisture and forms a durable elastomer.
Sikaflex 291i meets in addition the low spread of flame requirements set out by the International Maritime Organisation (IMO).

Sikaflex 291i Benefits

  • Wheelmark approved
  • 1-C formulation
  • Highly elastic
  • Low odour
  • Non-corrosive
  • Can be over painted
  • Bonds well to a wide variety of marine substrates
  • Solvent free
  • Very low VOC

Areas of Application

Sikaflex 291i is a multipurpose product used in marine constructions. It is suitable for making elastic, vibration-resistant joint seals, and can also be used for a
variety of interior sealing applications.

It bonds extremely well to the materials commonly used in marine construction like wood, metals, metal primers and paint coatings (2-C systems), ceramic materials and plastics
(GRP, etc.).

It must not be used to seal plastics that are prone to stress cracking (e.g. PMMA, PC, etc.).
This product is suitable for experienced professional users only.
Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.

Application notes

Surfaces must be clean, dry, sound and free from grease and dust before you apply the sealant. Check the current Sika data sheet for any pre-treatment your substrate needs, and test on the actual material first.

Sikaflex 291i or Sikaflex 221?

Sikaflex 291i was developed for the marine market. For general sealing and bonding jobs, compare it with the multi-purpose Sikaflex 221 in our guide Sikaflex 291i vs 221. For caravan joints, see Sikaflex 522 Caravan Sealant & Adhesive.

Additional information

Colour

Black, White

Size

300ml

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Related products

Sikaflex 291i: Polyurethane Sealant and Adhesive for Marine Construction

The marine environment poses unique challenges, from constant moisture exposure to fluctuating temperatures and the relentless push and pull of the sea. Sikaflex 291i is an adhesive and sealant designed for these conditions. Developed by Sika, a leader in the field of construction and industrial materials, Sikaflex 291i is engineered for the high demands of the marine industry, ensuring durability, flexibility, and waterproofing in a wide range of applications.

What is Sikaflex 291i?

Sikaflex 291i is a one-component, marine-grade polyurethane elastomeric adhesive and sealant. It cures on exposure to atmospheric moisture to form a durable elastomer. Sikaflex 291i is designed for marine applications, offering excellent adhesion to a wide variety of substrates used in boat construction and repair, including fiberglass, wood, metals, and marine paints.

Key Features and Benefits

Exceptional Durability

Sikaflex 291i is resistant to weathering, seawater, and freshwater, making it ideal for marine environments where materials are constantly exposed to harsh conditions.

Flexibility

It maintains high elasticity, allowing for the absorption of vibrations and movements associated with marine craft, thus ensuring the integrity of the sealed or bonded area.

Easy Application

Its one-component formula allows for easy application without the need for mixing.

Strong Adhesion

Sikaflex 291i provides strong adhesion to a wide range of substrates, making it a versatile solution for various marine sealing and bonding tasks.

Non-corrosive

It is non-corrosive and can be sanded and overpainted with marine paints, offering aesthetic compatibility with various boat designs and finishes.

Applications

Sikaflex 291i is suitable for a multitude of marine applications, including:

  • Deck to hull bonding: Ensuring a watertight and secure bond between the deck and hull.
  • Through-hull sealing: Sealing around through-hull fittings to prevent water ingress.
  • Bonding and sealing deck fittings: Including cleats, winches, and hardware.
  • Sealing keel joints: Providing a flexible and durable seal in critical areas.
  • Window and porthole sealing: Ensuring a waterproof seal around glass and acrylic windows and portholes.

Why Choose Sikaflex 291i?

Sikaflex 291i is a Sika sealant and adhesive developed for marine construction and maintenance. With Sikaflex 291i, boat builders, repair specialists, and enthusiasts can ensure that their vessels remain seaworthy, durable, and aesthetically pleasing, despite the challenging marine conditions.

Sikaflex 291i embodies Sika’s commitment to providing high-quality solutions tailored to specific industry needs. In the marine industry, where the battle against the elements is constant, Sikaflex 291i offers a robust line of defense, ensuring that vessels can withstand the rigors of marine life. Whether for professional shipbuilding or personal boat maintenance, Sikaflex 291i is a sealant and adhesive for marine sealing and bonding work. Check the current Sika data sheet for the substrates and conditions of your job.