Trelleborg 576 Anger-Lock™ (metric), Non-integrated Sealing System for Potable Water Pipes

System Description

F576 Angerlock. Trelleborg

Seal design & function

Trelleborg 576 Anger-Lock™is a combined lip and compression seal. Installed inside the socket after it has been formed, the retaining element effectively locks the seal into the groove.
Making the seal an integral part of the pipe brings many advantages: rings can no longer get lost during stocking and transportation, and the low jointing force ensures that the seal stays in place when pipes are jointed.
The unique design comprises of two elements:
  1. A plastic retaining element that holds the seal securely in position
  2. A rubber sealing element that ensures a watertight seal once the pipes are jointed

Together, they absorb any permissible variations in the groove.

Made of EPDM rubber, approved for drinking water application.

F576 Angerlock. Design and funtion. Trelleborg

Seal Performance

Trelleborg 576 Anger-Lock™ (metric) joint meets or exceeds current European Standards for pressure, vacuum, deflection and shear load.

The seal design gives low assembly forces making pipe jointing easier. 


  • Synthetic rubber (EPDM)
  • Hardness 60+/-5 IRHD
  • Approved for drinking water

Size Chart

63 10.4 17.8
75 11.6 19.9
90 12.7 21.7
100* 13.8 21.6
110 13.8 22.0
125 13.8 23.6
140 14.8 25.3
150* 17.2 23.5
160 15.9 27.2
180 17.5 28.8
200 16.9 29.0
200* 20.2 32.0
225 18.0 30.8 
225* 21.8 33.8 
250 21.1 34.2 
250* 23.6 37.0
280 22.5 36.1 
300* 23.7 40.4
315 23.6 37.6 
355 25.8 40.9 
400 28.0 44.9 
450 29.5 47.0 
500 31.6 51.4 
630 38.2 61.3
710 42  67.4
800  42.3  69.4
* Seal for Australian Standard AS-4441
Please conctact Trelleborg Pipe Seals for technical advice and joint design recommendations to meet your performance requirements
F576 Angerlock. 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

F576 Angerlock. Trelleborg

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.

F576 Angerlock. Trelleborg

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 576

Data sheet  

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Technical Approvals, Patents, Quality Standards

CE Mark


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