SikaFlex 221 Strong Adhesive and Sealant

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 (Inc VAT) Each pack£18.11 (Inc VAT)  each pack

Sikaflex-221 is a high-quality multi-purpose 1-component polyurethane adhesive / sealant that cures on exposure to atmospheric humidity. It is suitable for internal sealing and simple bonding applications.


Sikaflex-221 is a high quality, reputable, multi-purpose sealant designed to provide a professional seal to building materials. As a superior, long lasting sealant, the permanently flexible and slump resistant properties have been specifically designed to provide excellent gap filling and sealant functions. Its high quality performance adheres to most surfaces including wood, metals, metal primers, ceramics and much more providing the ideal time sealant which can be sanded and overpainted once cured. Sikaflex-221 provides an excellent resistance to seawater, fresh water, sewage effluent and diluted acids making it suitable for applications on marine vehicles.

  • Long open time: Tack time within 60 minutes of application
  • Multifunctional: Permanently elastic seal that adheres to a wide variety of substrates with a high adhesive strength
  • Permanently elastic: Provides better permanently elastic, non-sag seal
  • Suitable for marine application: High resistance to seawater, fresh water, sewage effluent, diluted acids and much more
  • Exterior and interior uses: Ideal for bonding mirrors to most common surfaces, sealing vertical expansion joints, jointing cladding panels and much more
  • Food safe: NSF-approved for incidental food contact
  • Paintable: Once fully dried this product can be overpainted and sanded down ideal for use around doors and windows
  • Available in black, white and light grey


  • Low odour
  • Non-corrosive
  • Can be painted
  • Can be sanded
  • Resistant to ageing
  • NSF-approved for incidental food contact
  • Bonds well to a wide variety of substrates


Delivery Information
We aim to process all orders placed by 12 PM on Mon-Fri (working days) on the same day.
Standard UK Delivery 3 to 5 working days £3.99 + VAT
Next Day Delivery Orders placed before 12 PM (Mon - Thu). £6.65 + VAT
Standard UK Delivery - 3 to 5 working days £3.99
Next Day Delivery - Next working day if ordered before midday. Orders placed before 1pm (Mon - Fri) £5.99
Saturday Delivery - Orders placed before 1pm (Fri). Next working day if ordered before midday. £25
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Return of Goods
We will happily refund or exchange any item purchased through us. Our aim is to provide you with the highest levels of service possible and to make the return process as easy as possible. Our Return Process is as follows
  • Simply inform us of any return within 30 days of the original order date.
  • Please provide the return order number for quick refund process.
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On all orders over £45 (Exc. VAT)


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