Technical Data October 2014 3M™ Water Contact Indicator Tape 5557 Product Description 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. Features and Benefits Film Top Layer • Printable by thermal transfer, flexographic, and screen printing methods • Provides improved ink receptivity • Provides protection from soiling and moisture during handling Paper Backing • Highly absorbent, transports water to show indications Acrylic Adhesive • Very high bond strength to most surfaces including low surface energy plastics such as polypropylene and powder coatings Total Construction • Rotary die cuttable • UL-969 Compliant Product Construction 3M™ Water Contact Indicator Tape 5557 Backing Paper Top Film Polyester Adhesive Acrylic Color White Standard Roll Length 180 yards

3M™ Water Contact Indicator Tape 5557 Typical Physical Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Property Value ASTM Test Method Adhesion to Stainless Steel: 82 oz/in width (88 N/100 mm) D-3330 (90° Peel Adhesion, 72 hr Dwell) Adhesion to Polycarbonate: 47 oz/in width (52 N/100 mm) D-3330 (90° Peel Adhesion, 72 hr Dwell) Tape Thickness: 10.2 mil (0.259 mm) D-3652 Release Liner Thickness: 2.0 mil (0.051 mm) D-3652 Humidity Resistance:* 55°C, 95% R.H. 0 hours exposure 7 days After water contact *Tape is applied to polycarbonate panel and hung vertically in heat/humidity chamber. Indication Properties Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Apply water to edge 15 seconds later 90 seconds later (2)

3M™ Water Contact Indicator Tape 5557 General Information • 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]. • Maximum roll length depends upon width. • Maximum roll width = 12 in. (304.8 mm). Application Ideas • 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. Storage and Shelf Life The shelf life of 3M™ Water Contact Indicator Tape 5557 is 12 months from the manufacture date when stored in original cartons at 21°C (71°F) and 50% relative humidity. (3)

3M™ Water Contact Indicator Tape 5557 Regulatory For regulatory information about this product, contact your 3M representative. Technical Information The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s method of application. Warranty, Limited Remedy, and Disclaimer Unless an additional warranty is specifically stated on the applicable 3M product packaging or product literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. Electronics Materials Solutions Division 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 3M is a trademark of 3M Company. 1-800-251-8634 phone Please recycle. 651-778-4244 fax ©3M 2014. All rights reserved. www.3M.com/electronics 70-0709-5279-4 (4)