Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Sika · Tools & Supplies
SIK0221242
In stock · ships from Knoxville
Sika Sikaflex-221 is a one-component, moisture-curing polyurethane adhesive sealant that forms a strong, permanent elastic bond on metals, wood, fiberglass, painted surfaces, ceramics, and many plastics.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Universal sealant/adhesive; no vehicle-specific fitment. Suitable for heavy-duty truck, trailer, RV, and general industrial use.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It is widely used in heavy-duty truck and trailer repair for sealing joints, bonding roof bows, and hanging sidewalls. The aluminum-gray formula resists weathering, aging, seawater, and diluted chemicals, and can be sanded and painted once cured. It comes in a 10.3 oz (300 mL) cartridge for easy, non-sag application.
Part Number: SIK0221242
SIKAFLEX (GRAY)
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more