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Item #:
77394145
Sika Sikaflex® 221 Multi-Purpose Polyurethane Sealant/Adhesive - 10.3oz(300ml) Cartridge - Aluminum Gray | Bundle of 2
Item #:
77394145
XCD 146
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Sikaflex®-221 is a high-quality multi-purpose non-sag polyurethane sealant/adhesive that cures on exposure to atmospheric humidity to form a durable elastomer.
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What Stands Out
Versatile Application
Sikaflex® 221 excels in bonding and sealing various materials, making it ideal for both professional and DIY projects, offering flexibility in multiple surfaces and conditions.
Durable Performance
This polyurethane sealant provides exceptional weather resistance and long-lasting elasticity, ensuring reliable performance even in extreme conditions, outperforming many competitors in durability.
Easy Handling
The convenient 10.3oz cartridge allows for precise application, minimizing waste while ensuring users achieve a clean, professional finish effortlessly in every task.
Product Details
- High-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive
- Meets approvals ASTM C920 types and tested in accordance with ANSI/UL 723
- Bonds well to a wide variety of substrates for permanent elastic seals of high adhesive strength
- Highly elastic, durable, resistant to aging and weathering exposure
- NSF registered, Proprietary Substances and Nonfood Compounds, UL listed for potable water
- Comes in a bundle of 2, each 10.3oz(300ml) Cartridge in Aluminum Gray
| Industrial sealant type | Polyurethane Sealant/Adhesive |
| Rec. use | Seal Joints |
| Recommended surface | Metal |
| Brand | Sika |
| Color | Aluminum Gray |
| Color category | Gray |
| Volume capacity | 300 mL |
| Features | Durable |
| Material | Polyurethane |
| Manufacturer | Sika |
| Weight | 1 lb (450 grams) |
| Size | 10.3oz(300ml) |
| Pieces | 2 |
| Count per pack | 2 |
| Piece count | 2 |
| Has written warranty | No |
Who Should Buy?
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DIY Enthusiasts
Ideal for home improvement projects, providing a reliable seal and bond for various materials in a single application.
-
Professional Contractors
Perfect for construction professionals needing a dependable adhesive and sealant for a variety of applications.
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Outdoor Applications
Works excellently for outdoor use, resisting weather elements and adhering to surfaces like wood, metal, and concrete.
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Sensitive Materials
Not suitable for use on sensitive surfaces like polystyrene or certain plastics where damage may occur.
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High-Temperature Areas
Not recommended for environments exceeding the sealant's temperature tolerance, as it may compromise adhesion and seal.
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Fast Repair Needs
Not ideal for situations requiring quick fixes, as curing time may delay immediate use after application.
Product Description
Sika Sikaflex® 221 Multi-Purpose Polyurethane Sealant/Adhesive - 10.3oz(300ml) Cartridge - Aluminum Gray | Bundle of 2
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What materials can Sikaflex®-221 bond to?
Answer: Sikaflex®-221 bonds well to wood, metals, ceramic materials, and plastics. -
Question:
Is Sikaflex®-221 safe for use in water applications?
Answer: Yes, it is UL listed for potable water in black, gray, and white colors. -
Question:
Can I paint over Sikaflex®-221?
Answer: Yes, Sikaflex®-221 can be sanded and overpainted for custom finishes.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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12 June 2026 · via Trustpilot
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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.
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Fastest cross-border delivery
Features & Benefits
- High-quality multi-purpose polyurethane sealant/adhesive.
- Cures with atmospheric humidity for a durable elastic bond.
- Bonds well to wood, metals, ceramics, and plastics.
- Highly elastic, durable, and resistant to aging and weathering.
- Can be sanded and overpainted for versatile use.
- Bundle of 2 cartridges for added value.