... a) For coupling and sealing pipe joints in ventilation, air condition and refrigeration systemsb) For coupling and sealing boards, panels, ... pipe joints in implementing construction-and-assembling operationsc) Protects equipment against vapor, dust, moisture and contamination d) Prevents corrosione) Heat- ... micron, 25 micron, 28 micron, 30 micron, 35 micron, 40 micron, 50 micron6) Sizes: a) 50mm x 5m b) ...