CTS1 scissor type shoe plate seals for Shell Nigeria
Per the end of 2007 CTS received an order for supplying CTS1 scissor type shoe plate seals combined with CTS20 secondary seals to several tanks operated by Shell Nigeria. The CTS1 is a new generation scissor type shoe plate seal, doing away with the concerns the traditional counter weight driven seals had.

The CTS1 shoe plates are connected to the floating roof with hangers and compressed against the tank shell by leaf springs. All CTS’ shoe plate seals are custom designed per tank, which eliminates problems that are common with off-the-shelf types of seals. The tank specific seal design ensures a seal with superior performance compared to other primary seal designs.

CTS1 scissor shoe plate seal, top view during installation

CTS1 Scissor Shoe Features:
- excellent vapour tightness, resulting in maximum emission reduction
- eliminates much of the rain water ingress to the stored product
- compatible with all stored products, including 100% aromatics
- available in different material combinations, where stainless steel would be our preferred material for long term performance
- suitable for both vertical and horizontal roof rims, without requiring rim modifications
- service life expectation well in excess of 20 years
- custom designed for each specific tank
- easy installation, up to 50% reduction in man-hours
- liquid mounted seal
- full installation manuals and project support available
- complies with EPA and API standards
- successfully used by many major oil refineries and tank terminals
- suitable for both welded and riveted tank shells
- can be combined with all available secondary seal designs

CTS1 scissor type shoe plate seal with energised hangers, ready to be fitted.