Trelleborg 140 Lamell, Sealing System for Sewer and Stormwater Pipes

System Description

Trelleborg 140 Lamell is a pre-lubricated sliding seal that is stretched onto the spigot of the pipe or manhole. Additional lubricat is not required for joint assembly. The joint design is standard in many countries. The seal is easy and clean to handle as the lubricant is enclosed in the sliding mantle. This allows installation with very little force as there is no friction between the rubber and concrete.

The joint is designed so that the pre-lubricated mantle rolls onto the top of the spigot shoulder and into the small gap between spigot and socket during installation. This prevents concrete to concrete contact and gives efficient distribution of transvers shear loads across the joint. The rectangular cross section of the laminated sealing body makes the seal very flexible and provides excellent contact width.

Forsheda 140 Design and funtion. Trelleborg

Seal Performance

Trelleborg 140 Lamell meets all relevant current European standards. 

Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.

Forsheda 140 Seal Performance. Trelleborg


  • 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

Size Chart

A (mm) B (mm) C (mm)


17.5 2.7
16.5 24.0 2.5
18.5 26.0 3.3
20.0 28.0 2.8
22.5 30.0 3.2
24.5 32.0 3.5
28.0 35.0 5.0
32.0 40.0 5.2
Forsheda 140. 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

Joint Assembly

Forsheda 140. Trelleborg

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

Forsheda 140. Trelleborg

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

Forsheda 140. Trelleborg

Centre the joint and assemble.


Data sheet

Trelleborg 140 Lamell  

Download (pdf)


Technical Approvals, Patents, Quality Standards

CE Mark


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