Putty Tape.

1" Wide not 3/4"

30' Roll x 1'" wide x 1/8" thick

Commonly used on RV's & Mobile Homes for Installing or replacing windows, doors, vents & trim for a water tight seal. 

Use on any overlapping metal seam for a water tight seal.

Many other uses...seal your sink to your countertop, faucets to walls or sink ledges.

Very flexible and non-hardening. 

Cleaner and easier to use than silicone.     

Easy peel off backing