We formulated our 3M Detector Loop Sealant 5000 specifically for protecting detector loop wires even in challenging roadway environments. We also designed this sealant to be extremely easy and cost-effective, both during and long after application.
Tough Yet Flexible
The sealant can be applied directly into the sawcut to form a durable tack free shell around detector loop wires without running into low spots, even on crowned or sloped roadways. It cures naturally in 24 hours, reacting with moisture in the environment to produce a rubber that resists weather, oils, gasoline, antifreeze, brake fluid and road salt. This tough, flexible material also prevents the wires from moving around as it keeps contaminants away from them, minimizing false calls.
The cured sealant presents a smooth surface across the sawcut so workers do not have to spend extra time finishing. It won’t degrade in high temperatures, fracture even at temperatures as low as -40° F, or shrink over time; this eliminates call-backs for refilling or additional repairs.

3M 16162, PTFE Glass Cloth Tape 5453, Brown, 2 in x 36 yd, 8.2 mil, 7000144794
3M 77197, Scotch-Brite™ Roloc™ Deburr and Finish PRO Unitized Wheel,TR, 3 in x 1/8 in x NH, 8C CRS+, 7100109130, 40/box
3M 53915, Performance Plus Duct Tape 8979N (Nuclear), Red, 72 mm x 54.8 m, 12.1 mil, 7010334653
3M 97841, Value Duct Tape 1900, Silver, 1.88 in x 60 yd, 5.8 mil, 7010375734
3M 43474, Glass Cloth Tape 3615, White, 1 in x 36 yd, 7 mil, 7000048876
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 50022, Venture Tape Xtreme Cloth Duct Tape 1557, Black, 48 mm x 55 m (1.88 in x 60.1 yd), 7010378552
3M 50216, Temflex Cotton Friction Tape 1755, 3/4 in x 82-1/2 ft, Black, 7010297809
3M 85653, Thermosetable Glass Cloth Tape 3650, White, 5 in x 60 yd, 8.3 mil, 7010334203
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
Standard Abrasives 713296, Aluminum Oxide Handy Roll, P320 J-weight, 2 in x 50 yd, 7100034517
3M 82239, Scotch-Weld Epoxy Adhesive 420, Off-White, Part A, 5 Gallon Drum (Pail), 7100001144 
