Forsheda 154, Non-integrated Sealing System for Sewer and Stormwater Concrete Pipes

System Description

Forsheda 154 is a pre-lubricated sliding seal that is stretched onto the spigot of the manhole. Additional lubricant is not required for joint assembly. The joint design is standard in many countries. Lubricant has been applied between the sliding skin and the body of the seal. This design permits in-stallation with very low force, as there is no friction between rubber and concrete. The special design of the joint and seal make the system easy to centre during jointing.

Forsheda 154. Trelleborg

Seal Performance

The Forsheda 154 seal meets all relevant current European standards. Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.

Forsheda154. Trelleborg

Material

  • Synthetic SBR or EPDM rubber
  • Hardness 40±5 IRHD
  • Approved in accordance with EN 681-1
  • Protected against ozone
  • Oil resistant grades are available on request

Seal Dimensions

Examples of Sizes 

A, mm B, mm
 19  29.3
 27  41.5
 32  49.2
Please contact Trelleborg Pipe Seals for technical advice and joint design recommendations to meet your performance requirements.

Forsheda 154. Trelleborg

Dimensions and designation


All data in millimeter.

On each seal, profile thickness, outer diameter, recommended pipe measurement and production period are given. The corresponding data are also on the packaging.

Subject to change for technical reasons

Video Joint Assembly

Forsheda 154. Trelleborg

Step 1

Stretch the seal onto the spigot and position against the shoulder.

Forsheda 154. Trelleborg

Step 2

Equalize the stress in the seal by lifting and releasing at a few points. The seal must sit evenly against the spigot shoulder all around the manhole. Lubrication of the socket or spigot is not required.

Forsheda 154. Trelleborg

Step 3

Centre the joint and assemble. The position of the seal in the final mahole joint is shown in the figure.
If re-joining is required ensure the sliding skin is drawn back to the position as shown in Figure 1.

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