3M SJ3550 Dual Lock Type 250

• 3M SJ3550 Dual Lock 250 Recolorable Fastener is a general-purpose black recolorable fastener with 250 stems per square inch.
• An engaged thickness of 0.23 inches and a closure life of 1,000.
• Type 250 stem density fasteners can mate to type 170, 250 or 400 fasteners (the higher the combined number the greater the closure strength).
• Mushroom-shaped stems on one side of the fastener interlock with identically shaped stems on the other side for 5X greater closure strength than hook and loop.
• Used to attach doors, access panels, signs, cushions, wall headliners, display components, city bus light fixtures, ceiling attachment, privacy curtain rails, sunroof trims, and wall panels.
• Also for POP (point of purchase), trade show exhibition and electronics, and for attaching E-Zaps tags to car windshields

Technical Information– Backing/Carrier: polypropylene

• Adhesive: acrylic (300 LSE)
• Release Liner: clear polyolefin film
• Thickness: 140 mils (carrier, adhesive) 4 mils (liner)
• Service/Operating Temperature: up to 200F
•  Engaged Thickness: 230 mils
•  Pins: 250 per square inch

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