SeamMaster Signature Series tapes use a uniquely superior adhesive formulation. This universal adhesive bonds aggressively to all carpet backings. And, its low melt point gives better adhesive flow and penetration at lower iron temperature settings. reducing distortion and shrinking of today's heat sensitive carpets. Low Melt, Universal Adhesive Signature Series tapes use a uniquely superior adhesive formulation. This universal adhesive bonds aggressively to all carpet backings. And, its low melt point gives better adhesive flow and penetration at lower iron temperature settings. reducing distortion and shrinking of today's heat sensitive carpets. Commitment to the Environment Only Seam Master has removed close to 40% of the petrochemicals and replaced them with natural ingredients. That's why these tapes produce less smoke and odor - you can smell the difference