Single Sided Black Sponge/Foam Tape.
D=6mm, W=12mm. 12m roll.
Primarily a foam compression sealant. The foam is predominantly closed celled and is of medium hardness foam. An acrylic pressure sensitive adhesive is coated on one side, and the product has a paper release liner on the other non-adhesive face. Will act as a water-seal and air/dust seal when compressed.