VAPORFLEX™ Secondary Seal

Internal Floating Roof Secondary Seal



The VAPORFLEX™ Internal Secondary Seal was introduced to the AST market as an efficient, durable and flexible secondary seal that is compatible with virtually all stored products. Designed with high strength materials, the VAPORFLEX is engineered to outlast other internal secondary seals on the market.

Unmatched in the market, the VAPORFLEX™ employs a simple, logical, durable design with features like stainless steel plates and a fabric wrapped wiper using HMT’s superior fabrics.

For an internal secondary seal designed to stand the test of time, choose the VAPORFLEX™ Internal Secondary Seal.

    Key Benefits
    The HMT VAPORFLEX™ Internal Secondary Seal primary benefits include:
  • No gapping — stainless steel support plates to ensure tension will hold up year after year and seals won’t gap, maintaining a tight seal
  • Excellent longevity — the VAPORFLEX™ is made of high-quality, corrosion-resistant, inert materials (stainless steel and PTFE); this seal will outlast traditional elastomer wiper seals
  • Superior product compatibility— compatible with virtually all products including gasoline, crude oil, benzene, methanol, toluene, naphtha, ETBE, TAME, ethanol and MTBE
  • Easy, fast installation — with its bolt-on design, installing the VAPORFLEX™ does not require hot work
  • Flexibility — can be fit to aluminum or steel internal floating roofs
    Key Design Features
  • Simple, effective design
  • Narrow support plates ensure the seal will conform well to local shell anomalies
  • Premium fabrics for long-life and durability of vapor barrier
  • Compatible with virtually all stored products
  • Bolt-on design allows for fast installation
  • Can be installed on aluminum or steel internal floating roofs