F: No waterproof
D: Epoxy glue
T: Empty silicon tube (not extruded)
M: Dripping silicone
K: Extruded silicone tube with full edges (empty inside)
Corner K: Extruded corner silicone tube with full edges (empty inside)
B: Parylene coating (10 Um thick)
P: PVC silicone tube
C: Parylene coating (24 Um thick)
E: PVC outside + epoxy glue inside
S: Extruded silicone tube + silicone glue inside
N: Round extruded silicone tube
L: Extruded squared silicone tube
Corner L: Extruded corner silicone tube
U: Tubular silicone extruded tube
U: Tubular spherical silicone extruded tube