Prime Tank Systems rim seal solutions ensure tight vapor control between the floating roof and tank shell, reducing product loss and emissions. Available in primary and secondary configurations, our seals are compatible with a wide range of stored products and designed for durability, flexibility, and compliance with international environmental standards.
High-performance sealing systems for vapour control and product integrity.
Prime Tank Systems supplies precision-engineered floating roof rim seals for both External Floating Roofs (EFR) and Internal Floating Roofs (IFR), in full compliance with API 650/653, BS 2654, EN 14015 and EEMUA 159 standards.
Our rim seals are designed to minimise vapour emissions, prevent contamination, and maintain the integrity of stored products—regardless of tank condition or shell distortion. With over two decades of expertise, we offer tailored solutions that match your tank’s specific geometry and operational requirements.
Seal Types Offered
We manufacture and supply the following main categories of floating roof rim seals:
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Mechanical Shoe Seals
Robust and highly efficient, offering near-liquid-mounted performance by isolating the annular vapour space from the atmosphere. -
Liquid-Mounted Seals
Provide direct contact with the liquid surface for effective vapour suppression and minimal emissions. -
Vapour-Mounted Foam Seals
Engineered for flexibility and compatibility where space constraints or operating conditions require a non-contact solution.
Customised Configurations
We offer both primary and secondary rim seals, which can be configured independently or in combination depending on performance requirements. Examples include:
External Floating Roof (EFR) Seals:
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Primary: Mechanical Shoe, Foam-Filled, Liquid-Filled, Compression Plate
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Secondary: Shoe-Mounted Seal, Compression Plate, Weather Shield
Internal Floating Roof (IFR) Seals:
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Primary: Mechanical Shoe, Foam-Filled, XPE Wiper Seal
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Secondary: XPE Wiper Seal
Tertiary sealing options are also available upon request, in line with local regulations or client specifications.
Retrofit Compatibility
In addition to new systems, we offer retrofit-compatible seals and replacement parts for older models such as SIPM, SR1, Wiggins, and others.
Seal Technology Review
Floating roof rim seals are engineered to prevent vapour loss and environmental emissions by sealing the annular space between the floating roof and tank shell. Without effective sealing, tanks are prone to product evaporation, contamination, and safety risks due to flammable vapours.
Prime Tank Systems offers both primary and secondary rim seal systems that ensure compliance with international standards. Designed for durability, chemical resistance, and flexibility, our seals perform reliably under extreme operating conditions, maintaining a tight, consistent seal.
Our clients experience measurable reductions in product loss, improved environmental compliance, and extended maintenance intervals. By choosing our high-performance rim seals, operators reduce operating costs and enhance tank safety and sustainability.
