Trelleborg 601 Power-Lock™ (metric), F-601 Power-Lock™ metric, Integrated Sealing System for Potable Water Pipes

System Description

Trelleborg 601 Power-LockTM is integrated into the pipe during the manufacturing process. By heating the pipe and using the mandrel together with the seal as a tool to form the socket, the seal is effectively shaping its own groove. This reduces irregularities and tolerances in the socket.

Forsheda 601 Power-Lock. Desing and funtion. Seal performance. Trelleborg

Seal design & function

The Power-Lock™ is a composite seal consisting of:

  • A flexible rubber element to seal effectively against spigot and socket

  • A polypropylene reinforcement element, bonded to the rubber, which holds the seal firmly in place

The seal is equally effective under both positive and negative pipe pressure (vacuum). Under positive pressure the higher the pressure the greater the sealing force. 

Under vacuum the seal maintains a positive sealing force against spigot and socket to prevent sand or soil entering the joint.

Forsheda 601 Power-Lock. Seal performance. Trelleborg

Seal Performance

Trelleborg 601 Power-Lock™ meets or exceeds current European and ISO standards for pressure, vacuum, deflection and shear load. 

The seal design gives low assembly forces making pipe jointing easier. Improved productivity and lower scrap during belling process for the pipe producer when compare to traditional integrated seals.

Power-Lock™ tolerates ovality effects caused by transportation or storage of the pipe better than other integrated seals. Eliminates the risk of corrosion by removing metal inserts. 



  • Synthetic EPDM rubber

  • Hardness 50 ± IRDH

  • Approved in accordance with EN 681-1

  • Ozone resistant

  • Approved for contact with cold potable water

Power-Lock Videos

Size Chart

Examples of Sizes 

 50  8.0  17.2
 63  8.0  17.3
 75  9.0  20.0
 90  11.0  24.3
 100-S2  14.0 32.3
 110  12.0 26.6
 125  14.0  32.3
 140  14.0  32.0
 150-S2  16.0  35.9
 160  15.0   33.5
 200   16.0  35.9
 200-S2  17.0  37.1
 225  17.0  37.1
 250  19.0   42.9 
 250-S2  20.0  43.6
 280  20.0  43.6
 315  21.0   45.8 
 355  23.0   50.2
 400   25.0   54.5 
 450  23.5  58.2
 500  30.0   65.4
 630  37.0  83.9 
 710  41.0   92.3
Forsheda 601 Power-Lock. 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


Do you need support?

Please contact Trelleborg Pipe Seals for technical advice and joint design recommendations to meet your performance requirements. We will be happy to support you.

Video Joint Assembly

F576 Angerlock. Trelleborg

Step 1

The spigot and socket of the pipe should be checked for damage prior to jointing.

The pipe spigot should be chamfered with an angle of 15°, taking care to remove all burrs. 

Both spigot and socket including the sealing ring should be free from dirt and other foreign matter. 

Lubricant should be applied evenly to the spigot end of the pipe.

Forsheda 601 Power-Lock. Trelleborg

Step 2

Immediately after lubrication, the spigot should be brought into contact with the socket. 

Both spigot and socket should correctly aligned and then slide the spigot into the socket, thus compressing the seal until the joint is fully made.


The best Sealing Solutions for Plastic Pipes


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Trelleborg 601 Power-Lock

Data Sheet  

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Technical Approvals, Patents, Quality Standards

CE Mark


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