- Home Page /
- Industrial Supplies /
- Industrial Adhesives Sealants & Lubricants /
- Caulk /
- Adhesive Caulk /
- Sikaflex 291 10.1oz and Sikaflex-221 10.1oz B...
0 ratings
Item #:
91755529
Sikaflex 291 10.1oz and Sikaflex-221 10.1oz Black Multi-Purpose Marine Grade Polyurethane Sealants and Adhesives
86% of respondents would recommend this to a friend
Item #:
91755529
TOP 144
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Saturday, September 26
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Sikaflex-291 and Sikaflex-221 create permanent, moisture-resistant bonds ideal for all your boat construction and repair needs.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Marine Grade Quality
Sikaflex 291 and 221 are designed for marine applications, ensuring strong adhesion and durability, even in harsh conditions. Ideal for boat repairs and maintenance.
Versatile Use
These sealants and adhesives are suitable for various materials including wood, metal, and fiberglass, making them perfect for multiple projects beyond marine use.
Superior Flexibility
Offering excellent elasticity, Sikaflex products allow for movement without cracking, ensuring long-lasting seals that withstand stress and weather elements.
Product Details
| Brand Name | SIKA |
| Number of Items | 2 |
| Unit Count | 20.2 Fluid Ounces |
| Number of Packs | 2 |
| Material Type | Polyurethane |
| Surface Recommendation | Fiberglass, Metal, Wood |
| Water Resistance Level | Waterproof |
| Color | Black |
| Item Form | Liquid |
| Item Weight | 10.1 ounces (286.34 grams) |
| Liquid Volume | 10.1 fluid ounces |
| Brand | SIKA |
Who Should Buy?
-
Boat Owners
Ideal for sealing and bonding various components on boats, ensuring water tightness and durability in marine environments.
-
DIY Enthusiasts
Perfect for home projects requiring strong adhesion and waterproof sealing in areas like bathrooms or kitchens.
-
Contractors
Useful for construction applications involving waterproofing and bonding different materials, ensuring long-lasting performance and reliability.
-
Concrete Surfaces
Not suitable for applications on unprepared or porous concrete; may not adhere properly without additional treatment.
Product Description
Sikaflex 291 10.1oz and Sikaflex-221 10.1oz Black Multi-Purpose Marine Grade Polyurethane Sealants and Adhesives
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is Sikaflex 291 used for?
Answer: Sikaflex 291 is a multi-purpose marine-grade sealant specifically designed for bonding and sealing in boat construction and maintenance. It adheres excellently to various substrates like fiberglass, wood, and metal, making it ideal for marine applications. This product is perfect for sealing deck joints, hull joints, and ensuring watertight enclosures. Whether you're a DIY boat enthusiast or a professional builder, Sikaflex 291 provides strong, flexible bonds that withstand harsh marine environments. -
Question:
What are the key features of Sikaflex-221?
Answer: Sikaflex-221 is a versatile polyurethane adhesive and sealant suitable for both interior and exterior applications. Its flexibility and durability make it ideal for use in construction, automotive, and marine projects. This sealant adheres well to a variety of surfaces, including metals, plastics, and wood. It's particularly effective for applications where movement and vibration are expected, providing a long-lasting, waterproof seal. Use Sikaflex-221 to ensure seamless finishes and strong bonds in your projects. -
Question:
Can I use Sikaflex products on my boat?
Answer: Absolutely! Both Sikaflex 291 and Sikaflex-221 are formulated for marine use, ensuring they can withstand the rigors of a marine environment. Sikaflex 291 is ideal for sealing and bonding various parts of your boat, while Sikaflex-221 provides a reliable adhesive for applications requiring flexibility and strong adhesion. These products are essential for repairs, maintenance, and new construction, ensuring your vessel remains watertight and structurally sound. -
Question:
How do I apply Sikaflex 291 and Sikaflex-221?
Answer: To apply Sikaflex products effectively, begin by preparing the surfaces clean and dry. Apply the sealant using a caulking gun or a suitable applicator, ensuring even pressure for a consistent bead. For Sikaflex 291, it's essential to smooth the bead while it’s still tacky to achieve a neat finish. Sikaflex-221 can be used similarly, but for structural applications, ensure the surfaces fit well together. Always allow ample cure time before exposing the sealant to water or stress for the best results. -
Question:
Is Sikaflex-221 suitable for automotive use?
Answer: Yes, Sikaflex-221 is excellent for automotive applications. It can be used to seal seams and bonding in car bodies, providing a strong and waterproof seal that withstands vibration and movement. As an all-purpose adhesive, it offers versatility to complete various automotive repairs effectively. Whether you're working on a classic car restoration or simply securing loose components, Sikaflex-221 is an outstanding choice for achieving durable results. -
Question:
What is the drying time for Sikaflex 291?
Answer: The drying time for Sikaflex 291 typically requires around 24 hours for a complete cure, although initial handling can be done in just a few hours. Environmental factors such as temperature and humidity can influence this curing process. It's crucial to avoid subjecting the sealed areas to water or stress during the curing time to ensure a robust and waterproof seal. For optimal performance, follow the manufacturer's guidelines on curing conditions. -
Question:
Can I paint over Sikaflex sealants?
Answer: Yes, you can paint over Sikaflex-221; however, it's important to check the paint compatibility before application. It’s advisable to allow the sealant to cure completely before applying paint to ensure good adhesion and finishing results. On the other hand, while Sikaflex 291 is not typically painted, you might want to consult product specifics if your project requires a painted aesthetic. For best results, always perform a small test patch first. -
Question:
What surfaces can Sikaflex sealants bond to?
Answer: Sikaflex 291 and Sikaflex-221 can bond to a variety of surfaces, including wood, metal, concrete, fiberglass, and plastics. This versatility makes them perfect for a wide range of applications—from marine projects to home repairs. Always ensure surfaces are clean and free from grease or paint for optimal bonding. Use Sikaflex products in construction, manufacturing, or maintenance tasks to achieve reliable and strong connections. -
Question:
Is there a difference between Sikaflex 291 and Sikaflex-221?
Answer: Yes, while both products are made from polyurethane and designed for bonding and sealing, Sikaflex 291 is specifically tailored for marine applications, offering excellent durability in wet conditions. In contrast, Sikaflex-221 is a more general-purpose adhesive/sealant that can be used effectively in construction and automotive projects. Depending on your specific needs—marine versus general purpose—you can choose the right product for optimal results. -
Question:
Where can I buy Sikaflex 291 10.1oz and Sikaflex-221 10.1oz in Tonga?
Answer: You can buy Sikaflex 291 10.1oz and Sikaflex-221 10.1oz Black Multi-Purpose Marine Grade Polyurethane Sealants and Adhesives from Ubuy in Tonga. Ubuy offers an extensive selection of sealants and adhesives, ensuring you can find the exact product you need for your projects. With easy access through their platform, you can quickly order these quality Sikaflex products to meet your sealing and bonding requirements.
SIKA Adhesive Caulk Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Strong bonding capabilities
- Waterproof and weather resistant
- Durable for marine applications
- Easy to apply
- Flexible and versatile
Cons
- Curing time can be longer than expected.
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
TOP 144
Order now and get it around Saturday, September 26
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Includes Sikaflex-291 and Sikaflex-221 for comprehensive sealing solutions.
- Fast-curing marine-grade sealants, perfect for quick applications.
- High strength and moisture resistant, ideal for above and below the water line.
- Bonds effectively to fiberglass, wood, metal, and other materials.
- NSF and USDA approved, ensuring safe use for drinkable water and food contact.
- Trusted by boat builders for reliability and performance.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.