Primary Seal for External Floating Roof
The full range of seal types, so the seal can be matched precisely to tank condition, rim space and product.
The primary rim seal of an external floating roof tank. Mounted on the outer rim of the floating roof, it closes the annular space between the roof edge and the tank shell and acts as the first barrier against vapour escape. Types supplied include liquid-mounted foam, mechanical shoe (pantograph or counterweight) and liquid-filled tube seals, selected according to tank condition, rim space and stored product.
Advantage:
1. Full range of seal types offered, so the seal can be matched precisely to tank condition, rim space and product.
2. Liquid-mounted foam and liquid-filled tube seals keep the vapour zone to a minimum for the best emission control.
3. Mechanical shoe versions tolerate wide rim-space variation, shell out-of-roundness and riveted tank construction.
4. Seals are designed for +/-100 mm rim-gap deviation so the roof never jams during operation.
5. Materials compatible with crude and the full range of refined products, including 100%-aromatic service.
6. Complies with API 650 and current VOC-emission regulations.
