740 are both acrylic, air-tight waterproof tapes used to seal off gaps around the house and the joints between connecting parts.
Sealing joints in moisture permeable/waterproof sheets, thermal insulation boards & flooring
Waterproofing gaps around window frames & air vents etc.
Features
■ It is easy to cut by hands.
■ The workplace and hands are not stained because of the Acrylic adhesion.
■Airtight waterproof tape (D/S and single faced tape) can use in wide range of temperature from -10℃〜60℃ .
Staining by butyl tape(competitor's)
Adhesion
Compared with butyl tape, these tapes' adhesive power is not susceptible to temperature changes, making it possible to remain stable adhesion.
Easy cut
The tapes can be cut more easily and more smoothly by hands than butyl one, which improves workability.