Inflatable seals Membramatic®

Membramatic® inflatable seals ensure the tightness of systems comprising moving parts with large or variable clearances. When pressurised with a fluid or gas, they move from the rest position to the working position and completely seal the gap, ensuring the system remains leak-free.
Inflated to adapt to uneven surfaces and deformations, inflatable seals operate under varying pressure conditions. Used in systems with moving parts or for applications requiring clamping, pressing, gripping or handling of components, inflatable seals ensure an optimal seal.

Main Benefits

Transition from the rest position to the working position by supplying pressurised fluid
Sealing performance despite significant and variable clearances
Dual function: sealing and locking of moving parts
Four profile families: types D, P, H and E
Automatic return to the original shape due to the elasticity of the elastomer

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Key features

Applications

Installations containing moving parts
Clamping, pressing, gripping and handling of workpieces
Felting machines, continuous welding machines, forming or crimping presses
Sliding doors or chamber doors, autoclaves, sterilizers
Cofferdams

Characteristics

Four profile families: Type D expansion seal, Type P expansion seal with skid, Type H seal, Type E extension seal
Type D Textile version available
Direction of expansion: outwards (Type E), Type I or Type F
Internal pressure to be maintained at 0.2 to 1 bar above the sealing pressure, depending on the seal type and application
Materials: NR, SBR, NBR, CR, Butyl IIR, Butyl Heat IIR, EPDM, VMQ, FKM
Temperature limits: -50 °C to +250 °C depending on the compound
Fluids: air, gas, demineralized water, hot water, acids and alkalis