As large oil storage tanks get older, they deform and become less perfectly round. These tanks use floating roofs to minimise the build-up of vapour as the contents are decanted, so the quality of the roof seal is critical if fugitive losses and fire risks are to be minimised. On these older tanks, elastomeric vapour seal materials and constructions play an increasingly vital part in maintaining the integrity of the floating roof seal.
We have a number of different types of vapour seal materials that can be deployed by the primary contractor and which help in maintaining roof seal integrity on these out of round storage tanks. All are supplied in roll form.
A multi-ply construction where two distinct layers are joined longitudinally down one edge. One face has a ribbed profile. The envelope is attached to both the tank lid and the tank sides, creating an impervious vapour seal between the two.
A vulcanised join is made to a flat sheet, turning it into an open-ended tube that is used as a secondary vapour seal between the floating roof and tank sides of a fuel storage tank.
Moulded Wiper Seal Blades
An abrasion and oil resistant moulded edge strip that is used to bridge the gap between the floating roof and the tank side.
An extremely fire retardant fabric reinforced sheet, used as a secondary vapour seal. This material has been demonstrated to be lightning strike proof, something a lot of lighter weight materials cannot match.
A fabric reinforced seal with a ribbed profile on one face. The serrated scuffband acts as an effective wiper/scraper, removing waxy residues from the tank shell.
Reinforced with nylon or glass leno fabric, forming an effective weathershield or secondary seal.
These products are designed to prolong the life of oil storage tanks, minimise loss and reduce maintenance.