3M 393 Waterproof Duct Tape

3M's 393 waterproof duct that seals down to your glass and will hold even after being submerged in water overnight. This makes it great for bonding pieces together for Rociprolap grinding or even making handles to hold unwieldy pieces on the grinder by hand.
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  • Adhesion to Steel: 95oz/inch width
  • Tensile Strength: 36lbs./inch width
  • Elongation at break: 8%
  • Tape Thickness: 12 mils (0.30mm)