Item no.
Model no.
Sikaflex®-221i Sealant
300 ml
Packing Unit
1 pcs

Product details

Sikaflex® 221i: Due to the wide adhesive spectrum this adhesive / sealant is suitable for sealing thru-hulls, cable entries, wet rooms, windows, to embed cleats and fittings. Suitable materials for this sealant are metals, primers and lacquered coatings (two-component systems), ceramic materials and plastics.

Sikaflex® 221i is a long-time tested, multi-applicable, stable one-component polyurethane sealant which cures by atmospheric moisture into an elastomer. It is produced according to ISO 9001/14001 standards and the Responsible Care program.

Product benefits:

  • 1-component
  • elastic
  • low in odour
  • ageing resistant
  • can be lacquered
  • sandable
  • has a wide adhesive spectrum
  • food compatible approved (NSF + COMMISSION DIRECTIVE relating to plastic materials and articles intended to come into contact with foodstuffs 2002/72/EC)

Product safety

Please note the following hazard warnings:

Hazard pictograms
Signal word
Hazard warnings
May cause an allergic skin reaction.
Contains isocyanates. May produce an allergic reaction.
If medical advice is needed, have product container or label at hand.
Keep out of reach of children.
Avoid breathing dust/fume/gas/mist/vapours/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF ON SKIN: Wash with plenty of soap and water.
Dispose of contents/container to …
H317, EUH204, P101, P102, P261, P280, P302+P352, P501


en-flag Datasheet
PDF, 109,94 KB
en-flag Manual
PDF, 56,60 KB
de-flag Datasheet
PDF, 28,38 KB
de-flag Manual
PDF, 73,72 KB
de-flag Safety datasheet
PDF, 393,39 KB
de-flag Short manual
PDF, 471,83 KB
de-flag Short manual
PDF, 639,08 KB
it-flag Manual
.PDF, 128,19 KB

What other SVB customers have to say

100% real reviews
Roger A.
Flag of Royaume-Uni Verified purchase 16617
The Best
It is Sikaflex, what else can you say
Jim V.
Flag of Belgique Verified purchase 16620
good for fitting valves treu the hole
Daniel L.
Flag of France Verified purchase 16617
OK corresponds to the description.
View all ratings

Rate product

How would you rate this product?
Completely fails to meet my expectations
Only some expectations are met
Meets my basic expectations
Slightly better than my general expectations
Fully exceeds my expectations
Click on the stars to rate

Customers ask customers

Ask other SVB customers who have already purchased this product from us about their experience.

Your question will be automatically forwarded to other SVB customers and published on the product page. Please do not ask any questions which can only be answered by the SVB team – such as the status of an order or product availability. You are also more than welcome to contact our SVB team by email at: or by phone on: +49 (0)421 57290510 .

  • More "Customers ask customers" available in the following languages :
  • Flag of Français
  • Flag of Deutsch

Technical question

User image of Andis L.
Andis L. asked
on 20 juil. 2022
Flag of English Is it best to use for halyard clutches or other Sika?
No answers yet. Be the first to answer this question!