Resistant to weathering, seawater and ultra-violet radiation, Sikaflex 291i is the perfect all rounder: 

an all-purpose flexible marine sealant that bonds extremely well to all the standard materials 

used in boat construction.

Its outstanding elasticity ensures a durable, long-lasting seal.

Sikaflex®-291 is a non-sag 1-C polyurethane sealant specifically developed for the marine market & environment.   

It cures on exposure to atmospheric moisture to form a durable elastomer.

Sikaflex®-291 meets the requirements set out by the International Maritime Organisation (IMO).

Product Benefits:
- 1-C formulation
- Elastic
- Low odour
- Resistant to ageing and weathering
- Non-corrosive
- Can be over-painted
- Can be sanded
- Bonds well to a wide variety of substrates commonly used in marine construction like wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics (GRP, etc.).

Sikaflex®-291 is a multipurpose product for use in marine construction. 

It is suitable for making elastic, vibration-resistant joint seals, 

and can also be used for a variety 

of interior and exterior sealing applications.

Sikaflex®-291 must not be used to seal Plexiglas, polycarbonate, etc...that are prone to stress cracking