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SIKA Sikaflex-221 Multi-Purpose Sealant/Adhesive, Gray, 10.1 fl. oz – Fast-Curing Polyurethane, Highly Elastic, Weather-Resistant, Sandable & Paintable, Bonds to Wood, Metal, and Plastics
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 19, 2026 9:39 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The price is modestly below what this product ordinarily sells for.
- 🏷️The retail sticker price has been slashed by 55% — a steep markdown from the official listing.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
3.07/28
Recent Value
0/22
Market Standing
3.53/20
Deal Strength
3/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
GlueUS
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 aluminum gray, this one-component urethane caulk bonds to a range of substrates, including metals, plastics, and metal primers and coatings
✓AGE RESISTANT - Formulated to resist the effects of aging to better perform at peak capacity no matter the conditions. Also resists elements such as seawater, diluted acids, and caustic solutions
✓READY TO USE - The Sikaflex 221 gray sealant comes in a handy cartridge that fits easily on an electric, pneumatic, or manual application gun, making accurate placement of adhesive paste quick and easy
✓SAFE AND EFFECTIVE - Approved by the NSF for use in both drinking water systems and food production operations, so you can rest easy knowing there's no harmful level of chemicals
✓PERFECT FOR INTERNAL SEALS AND BONDING - Use it for permanent seals that you can rely on. The paste also bonds to ceramic materials and cures quickly upon exposure to atmospheric moisture
⚙️ Specifications
Color
Aluminum Gray
Brand
SIKA
Item Weight
350 g
Liquid Volume
10.3 fluid ounces
Full Cure Time
5-7 days
Initial Hardening Time
2 hours
Item Form
Liquid
Maximum Gap Fill
1 inches
Surface Recommendation
Metal, Wood, Glass
Temperature Range
40-100 °F
Water Resistance Level
Water Resistant
