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![Sika Sikaflex 221 Multi-Purpose Polyurethane Sealant/Adhesive - 10.3oz (300ml) Cartridge - White [90891] Surface Mount Underwater Nominal Impedance: 4 Ohm](https://cdn.shopify.com/s/files/1/0627/1103/8191/files/67316XL.jpg?v=1775601137)
Nominal Impedance: 4 Ohm
NMMA Type Accepted under rigorous marine industry testing protocols
Chest Size - Up to 65"
Upgrade to modern
Sika Sikaflex 221 Multi-Purpose Polyurethane Sealant/Adhesive - 10.3oz (300ml) Cartridge - White [90891] Surface Mount Underwater Nominal Impedance: 4 OhmSikaflex 221 Multi Purpose Polyurethane Sealant Adhesive 10. 3oz (300ml) Cartridge White Sikaflex 221 is a high quality multi purpose non sag 1 c polyurethane sealant adhesive that cures on exposure to atmospheric humidity to form a durable elastomer. Meets approvals ASTM C920 types Sikaflex 221 is tested and classified by ANSI UL 723 Test for Surface Burning Characteristics of Building Materials. Uses: Sikaflex 221 bonds well to a wide variety of
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