Secondary Compression Plate Seal “L” (CPL5)

The Secondary Compression Plate Seal “L” (CPL5) is a rim-mounted system suitable for floating roof tanks of all sizes, designed for use with all grades of crude and refined products. This seal can be installed while the tank remains in service, minimising downtime and disruption.

The Secondary Compression Plate Seal “L” (CPL5) incorporates a compression plate, a synthetic rubber wiper, and a vapour barrier membrane. The compression plate can be supplied in either galvanised steel or stainless steel, while the membrane is typically made from polyurethane-coated nylon fabric with very low vapour permeability. Depending on your requirements, alternative materials such as PVC Nitrile, PTFE/Teflon, or Firestop can be specified.

All fixings are located on the outside of the seal, leaving the tank shell side completely smooth to reduce the risk of damage when the roof floats above the tank shell. The seal can be attached to either a vertical upstand or a horizontal angle, and the dimensions of the compression plate can be adjusted to suit a wide range of nominal rim spaces. The wiper maintains approximately 65 mm of contact with the wall of the annular space, ensuring consistent sealing performance.

Material Specification:

Compression Plate:
1.6mm Galvanised Steel / 1.5 mm Stainless Steel

Clamp Channels:
Galvanised / Stainless Steel

Wiper:
Synthetic rubber

Vapour Barrier:
CS / PTFE / Polyurethane / Viton

Shunts:
Stainless Steel

Technical data:

Rim space:
200 mm ± 100 mm (standard)

Aromatic resistance:
100%