SIKAFLEX 621 Purform Sealant Black - 300ml
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100 days returns & exchanges
- Customer reviews: 4.58/5 (7,020 reviews)
SIKAFLEX 621 Purform Professional Adhesive and Sealant
The SIKAFLEX 621 Purform Sealant is a high-quality 1-component polyurethane adhesive and sealant for professional bonding and sealing of various materials. This versatile sealant is the successor to the well-known Sikaflex 221 and has been developed with innovative Purform technology. As a result, the sealant contains less than 0.1% monomer diisocyanate, meets the strictest emission requirements, and no mandatory diisocyanate training is required. The sealant adheres excellently to metal, plastic, wood, and painted surfaces, often even without a primer.
The successor to Sikaflex 221
SIKAFLEX 621 Purform is the new generation universal adhesive and sealant for the automotive, transport, and industrial sectors. Compared to Sikaflex 221, you benefit from the same reliable performance, combined with the latest Purform® polyurethane technology. This results in lower emissions, improved occupational safety, and a product that meets current REACH regulations without compromising adhesion, flexibility, and durability.
Universal PU sealant for bonding and sealing
The SIKAFLEX 621 Purform is suitable for both bonding and sealing joints indoors and outdoors. Thanks to the excellent adhesion without primer, the sealant is ideal for applications in vehicle repair, bodywork, motorhomes, caravans, trailers, industrial assembly, and construction work. After curing, the sealant remains permanently elastic, is highly resistant to aging and weather conditions, and can be painted over with common industrial paint systems (pre-testing recommended).
Purform technology for safe and future-proof work
Thanks to the innovative Purform technology, SIKAFLEX 621 combines the high performance of a professional polyurethane sealant with a significantly lower content of free monomer diisocyanate. This allows you to work safer, reduces user exposure to harmful substances, and no specific REACH safety training is required for this product. Thus, you choose a modern adhesive and sealant that is ready for the future.
Features of SIKAFLEX 621 Purform Sealant
- Professional 1-component PU adhesive and sealant
- Successor to the well-known Sikaflex 221
- Based on Purform technology
- Less than 0.1% monomer diisocyanate
- No mandatory diisocyanate training according to REACH regulations
- Adheres excellently to metal, plastic, wood, and painted surfaces
- In many applications primerless adhesion
- Permanently elastic and resistant to aging and weather conditions
- Paintable with common industrial paint systems
- Suitable for automotive, bodywork, transport, and industrial applications
Pros and cons
- The modern successor to Sikaflex 221 with improved Purform technology
- Less than 0.1% monomer diisocyanate, eliminating the need for mandatory diisocyanate training
- Bonds to many materials without primer and remains elastic for a long time
- For maximum adhesion on specific or critical surfaces, a primer or preliminary adhesion test may be necessary
