3M 5557 Water Contact Indicator Tape

3M™ Water Contact Indicator Tape 5557 is a 10.2 mil (259 micron) thick tape used to indicate water contact. The tape turns from white to red upon direct water contact. Tape may be die cut using rotary die cutting process. Substrate should be smooth, clean, dry and oil-free to ensure good wet-out and adequate adhesion. Adhesive should not be applied at temperatures < 10°C (50°F) [best if room temperature or higher]. 

Applications: Use as a water contact indicator in handheld or portable electronic devices such as smart phones, tablets and phablets, laptop computers and keyboards, wearable electronic devices, gaming and MP3 players, two-way radios and cordless phones, digital and video cameras, Li-MH batteries and chargers.