Why use a periferal sealing system for the Internal Floating Roof?

  • Because the floating roof should be able to float freely on the stored liquid's surface at any time, the surrounding area cannot be hard (because it can get stuck), and there should be a suitable space for the sealing rim with cushioning elasticity.

  • The sealing rim must take into account the elastic coefficient of the tank wall and cannot be higher than the weight of the floating roof.

  • Also it's important to take into consideration how to achieve a more complete sealing to reduce volatilization losses.


Various Periferal Seal Systems:

Spiral Spring Metal Plate Mechanical Seal System with Full Contact

  • The rim-seal's Full Contact design effectively reduces emissions formation.

  • The design is lightweight and suitable for all types of Internal Floating Roofs. With excellent elasticity it won't deform, and it works as an effective buffer between the IFR and tank's shell, extending IFR's lifespan.

  • The multi-layer envelope design prevents sparks formation, making it a safer and more reliable seal system.

  • Because there is no need to fill the rim seal with PU foam or other liquids as cushion, if the seal breaks there will be no contamination of the stored liquid with foam fragments or liquids.












★Foam Seal

  • It is the primary seal.

  • Suitable for lightweight roofs.

  • It is fully liquid-sealed and has no accumulation space of volatile concentration, which is excellent in blocking VOC.

  • The sponge elastic acts as a buffer.

  • Wrapped with a highly abrasion resistant fiber coated envelope.

  • Without metal,there will be no direct metal contact problems.

  • The elasticity is even and stable, and the earthquake resistance is good.


★Wiper Seal

  • It is the secondary seal

  • It function is to scrape residual liquid on the tank wall.

  • Suitable for lightweight roofs.

  • Light weight and good recovery.

  • Without metal, there will be no direct metal contact problems.

Periferal Sealing System