Sikaflex 291 Polyurethane Sealant 150ml White
Create an elastic marine joint with white Sikaflex 291 in the 150ml tube, product code 514503. This one-component polyurethane sealant is developed for marine sealing applications, combining a non-sag formulation with a cured joint that remains elastic and resists vibration. It is suitable for a range of interior and exterior sealing tasks on compatible boat materials.
Sikaflex 291 cures when exposed to atmospheric moisture, forming a durable elastomer. The one-component format means the sealant is supplied as a single formulation. Use the product instructions to plan surface preparation and application; curing and preparation requirements should be checked for the actual joint and conditions rather than assumed from the tube size.
The listed bonding surfaces include wood, metals, metal primers, ceramic materials and GRP. Paint compatibility is specifically described for two-component coating systems. That distinction matters when sealing around a painted fitting: identify both the underlying material and the coating before selecting the sealant. A broad list of substrates does not make every paint or plastic interchangeable.
Its elastic, vibration-resistant character is relevant where the joint needs to accommodate the movement associated with the stated marine sealing application. The non-sag consistency is another useful selection feature when planning how the material will remain in the joint during application. Match the product to the intended joint design and use the fitting instructions for the component being sealed.
This 150ml white version is the smaller white tube in the range. It offers a different pack format from the 310ml options, while retaining the same stated marine-sealant purpose. Check the amount required for the joint before ordering; a coverage length cannot be established from volume without the bead dimensions.
Product details
- Product code: 514503.
- Supplied size / variant: 150ml - White.
- Non-sag one-component polyurethane marine sealant.
- Forms durable elastic, vibration-resistant joints for interior and exterior sealing.
- Bonds to wood, metals, primers, paint coatings, ceramic and GRP.
- Cures on exposure to atmospheric moisture.
- Compatible coating types include two-component paint systems.