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External Floating Roof Seal

TWS flexible seal system provides an excellent capture of vapor in the rim space between tank shell and pontoon.

Shoe in close fit to tank surfaces is supported mechanically during tank operation and foam with envelope is another great choice to prevent vapor zone in the first place. Tube seal is highly demanded for its unique characteristics. TWS fabric used as a seal or seal component is durable in its environment and stays strong against contamination by the stored products.





l TWS-PM : Pontograph Type Mechanical Seal


Connected shoe plates crates sealing ring, which is always pushed harc against tank shell by weight and mechanical arms. TWS! mechanical seal is performed regardless of rim space variation and continuous seal captures vapor loss.







l TWS-SM : Spring Type Mechanical Seal


TWS advaced design of double spring seal is preferred by many demands and it is installed without welding.

Economic way of performing sealing efficiency is well known.








l TWS-Foam : Foam Seal(Liquid or Vapor Mounted Type)


TWS Foam seal is one of the best sealing systems with resilient foam and quality envelope. Closed cell of foam fights against liquid and rough tank shell can not compromise sith TWS envelope movement and performance








l TWS-Tube : Tube Seal


TWS Tube seal material can be selected depending on the stored products or the customer requirement.

Whatever unique their needs, TWS Serrated Scuff band and Tube seal provides liquid flexibilty and solid quality against abrasion (frication) and corrosion.





l Sync Master : Secondary Seal


TWS Sync Master Secondary seal is an economical way to ensure to have weather proof sealing system for external floating roof. TWS engineers understand tank shell out-of-roundness and its plumbness. TWS-Sync Master can fit various conditions of each tank and irregularities of rim space. Wide rim space variation is accomplished with API650 appendix C. It is custom designed and satisfies the needs of tank characteristics with wiper seal being in close contact of tank shell and seal material being 100% ultra-violet protected. TWS Sync Master Secondary is installed easily and can be done while tank in service. No maintenance is required and the excellent quality of Sync Master seal components will lead to long lasting service life time.







l Syncro Master : Low Profile Secondary Seal


TWS Low Profile Syncro Master is designed to maximize the tank capacity for tank owners to have better profitability and operation efficiencies. Syncro Master unique design has innovation to meet on-going s customers' needs on tanks and Snycro Master's versatility in design based on tank conditions has made prominent choice for the customers throughout the world. Syncro Master is also applied to carbon steel deck in cone roof tank because it is low profile, light, and compatible with the products. Vapor capturing fabric provides easy installation and life long service. Snycro Master has been installed in various styles in order to satisfy every condition of the tanks worldwide. TWS engineers have innovated, redesigned, calculated, simultated, and met secondary sealing effect with Syncro Master and it is readily available for the customers' interest and needs.