Semi-Permanent Duct Seals

Semi-Permanent Type MD Duct Seals

Filoform Semi-Permanent Duct Seals (Type MD) use a specially formulated two-component expanding polyurethane resin to create a 100% water- and gas-tight seal. The resin also provides excellent mechanical strength. This makes these duct sealing systems suitable for protecting cables and pipes across a range of applications.

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