The Pull-Ring System – Installation Instructions

Installation of Pull Ring Connections


Pull-rings are used in conjunction with U-shaped seals to connect pipe components and pressed
components with a 6 mm lip.

The use of different U-shaped seal profiles enables the same pull-ring to be used with 1 to 2 mm thick pipe components and pressed components.

To meet the different requirements of every system, JACOB offers a comprehensive and wide-ranging
standard range which covers most requirements.


U-shaped seals

  Profile for 1 mm wall thickness Profile for 2 and 3 mm wall thickness
  NBR, silicone, Viton EPDM conductive NBR, silicone, Viton, EPDM conductive For 3 mm wall thickness, the use of U-shaped seals made of NBR or silicone is recommended. Only in conjunction with the pull ring for 3 mm pipework.
 Pipework component B Wall thickness pipework component A  Wall thickness pipework component A  Wall thickness pipework component A
1 mm 1,5 mm 2 mm 1 mm 1,5 mm 2 mm 2 mm 3 mm
1 mm    
1,5 mm        
2 mm      
3 mm    

Pull rings

QUICK CONNECT pull-ring Pull-ring (without sealant)
 Pull-rings for push-in pipes (1 & 2mm wall thickness)-344 Two part pull-rings for U-shaped seals-0


• Repair damaged lipped ends (e.g. align)

• Eliminate any unevenness from the lipped end

• Assemble the pipework tension-free

• Ensure when fitting the pull-ring that the U-shaped seal does not bunch or fold

• Support horizontal tubing approximately every 4 meters. If there are multiple short pipework components in the pipeworl line, the interval between supports should be reduced

• Attach branch components so that they do not generate any tension in the main pipework line

• Tighten the bolts of two-parted pull-rings evenly on both sides

• Re-tighten the pull-rings after 24 hours to ensure they are as leak-proof as possible


Note: To connect JACOB pipe components with a 6 mm lip. A U-shaped seal and a pull-ring are needed for each
connection. You need a 6 mm hexagon cap screwdriver to mount the pull-rings.

step1 Installation of Pull Ring Connections

Step 1

Attach a U-shaped seal over one of the lipped tube ends.

• The U-shaped seal must be slightly stretched to enable it to be attached

• The profiled side must face the tubing component that is being connected


step2 Installation of Pull Ring Connections

Step 2

Position the connecting tube and slide one pull-ring half over the lipped pipe end.

QUICK CONNECT pull ring Two-parted pull ring
First, attach the pull-ring half without the toggle clip We recommend separating the two halves of the pull-ring beforehand

Ensure that the pipework components are properly aligned and the U-shaped seal is in the correct position.

Note: We recommend that when fitting horizontal pipelines where condensate occurs, any points at which the U-shaped seal is glued should be positioned on top, and the connecting points of the pull-ring halves are horizontal. This ensures the maximum possible tightness at the lowest point of the connection.


step3 Installation of Pull Ring Connections

Step 3

Press the second pull-ring half onto the lipped pipe ends.

Please note: When closing the pull-ring, the U-shaped seal must not bunch or fold.

QUICK CONNECT pullring Two-parted pull ring
Place the clasp over the closing hook and close the clip. Tighten the bolts evenly with a torque of 10 Nm
To prevent the connection from loosening accidentally (such as due to vibration) tighten the bolt with a 10 Nm torque on the mounting face  

Please note: A bolt tightening torque of 10 Nm is necessary for the QUICK CONNECT pull-ring, or 25 Nm for the two-part pull-ring, for shock explosion proof connection of up to 3 bar over-pressure.