Trelleborg 171 Pre-Lube Load distributor, Sealing System for Sewer and Stormwater Pipes

System Description

Trelleborg 171 Pre-Lube Load distributor is a sliding seal with a prelubricated closed sliding mantle resulting in low jointing force as there is no friction between rubber and concrete.

The joint design should comply with the requirements of Din V 4034-1. Connected to the seal is a load distributor element which prevents concrete to concrete contact between the manhole sections.

Forheda 171. Seal performance.Trelleborg

Seal Performance

Trelleborg 171 Pre-Lube Load distributor seal meets the requirements of all current relevant European standards. 

Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot. Test reports are available on request.


  • Synthetic EPDM rubber
  • Hardness 40±5 IRHD
  • Approved in accordance with EN 681-1
  • Protected against ozone

Size Chart

A (mm) B (mm) Joint Gap


72.7 11.5±1.5
24.4 78.0 13.5±2.0
29.1 87.6 16.0±2.5

You need support?

Please contact Trelleborg Pipe Seals for technical advice and joint design recommendations to meet your performance requirements.
Forheda 171. 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

Forheda 171. Trelleborg

Step 1

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

Forheda 171. Trelleborg

Step 2

Equalize the stress in the seal by lifting and releasing at a few points.

Forheda 171. Trelleborg

Step 3

The seal must sit evenly against the spigot shoulder all around the manhole. Lubrication of the socket or spigot is not required.

Forheda 171. Trelleborg

Step 4

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


Data sheet

Trelleborg 171 Pre-Lube Load distributor  

Download (pdf)


Technical Approvals, Patents, Quality Standards

CE Mark


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