IOSSO® Seam Sealer (4 oz)

The IOSSO® Seam Sealer (4 oz) is a non-flammable, easy-to-apply seam sealer designed to help prevent leaks in sewn seams. Ideal for use on cotton, cotton blends, polyester, and other synthetic woven fabrics, it creates a water-resistant barrier without altering the fabric’s appearance or feel. Perfect for sealing seams on boat covers, awnings, tents, backpacks, and other outdoor gear.

Note: Water repellency may vary on vinyl-coated or vinyl-laminated fabrics depending on seam construction.

Sold per dabber bottle — 4 oz