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Sika · Tools & Supplies
221-523
In stock · ships from Knoxville
Sikaflex-221 is a one-component, high-performance polyurethane sealant and adhesive used widely on heavy-duty trucks, trailers, RVs, and buses.
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Verified fitment for 4 applications
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Part data verified against 5 catalog sources
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It cures to a tough, flexible rubber that permanently seals exterior seams, roof joints, and panel connections against water, dust, and corrosion. The black color blends with many finishes and is paintable if needed. You replace it when factory or old sealant cracks, peels, or starts leaking, to restore a durable, waterproof bond.
Part Number: 221-523
SIKAFLEX BLK.
Unit: ea
Dealer: Knox Trailers
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