Seam Grip is a urethane-based seam sealer and repair adhesive for sealing and repairs to all types of fabrics except those treated with silicone. For Silicone treated fabrics use Seam Grip + Sil Silicone Tent Sealant.
28.4 grams of concentrated seam sealant complete with instructions.
Previously known as McNett Seamgrip - it's the same stuff.
NB When not using Seam Grip or Free Sole, it is suggested that these products are stored in a freezer as they will last longer. They do not take long to thaw.