Joint à lèvre

Classification
Definition

Composé d'une lèvre élastomère flexible dans un boîtier rigide. Le joint à lèvre est fixe et l'arbre tourne à l'intérieur. Cliquez ici pour consulter le rapport sur les pompes consacré à ce sujet

Glossary Right Side Image
Rendu d'un joint à lèvre installé dans une pompe Viking

Joint à lèvre

Qu'est-ce qu'un joint à lèvre ?

Les joints à lèvre se composent d'une lèvre souple en élastomère logée dans un boîtier rigide.

 

Animation showing the flexible lip of a lip seal.

Le joint à lèvre est fixe et l'arbre tourne à l'intérieur.

Image showing how a lip seal is stationary while the shaft rotates inside of it.

 

Un ressort interne contribue à maintenir la lèvre en tension et à la garder en contact avec l'arbre, tandis qu'une lèvre externe, appelée « racleur », empêche la pénétration de contaminants provenant de l'environnement extérieur.

Cliquez ici pour consulter le rapport sur les

Comment installer un joint à lèvre

Here are some basic steps for installing a lip seal. These steps will vary depending on the type of seal and the pump technology it’s going into, but for this example these steps relate to installing a lip seal into Viking Pump’s G and GG sized 75 Series™ pumps.

Note: Before any work begins on a pump, please consult the appropriate technical service manual for safety information. A copy of the latest revision can be found on our website.

What you need for installation

To install the two lip seals into a G or GG sized 75 Series™ pump, you’ll need two pieces of equipment:

  1. Arbor Press
  2. 2 ¾” press fixture

 

Pressing in the seals

The 75 Series™ has two lip seals that are pressed in one at a time. The lips face outward from each other when installed. For G and GG sized pumps, the lip seals will be pressed in from the flange side of the pump.

Image showing the direction of lip seal placement in a Viking Pump
Place the first lip seal into the bore with the lip down. Image showing the direction of a lip seal before being pressed into place in a gear pump.
Press until it stops at the bottom of the seal bore.

Animation showing the pressing of a lip seal into a gear pump.

Image showing a fully installed lip seal.

Place the second lip seal with the lip facing up and press until it stops against the first lip seal.

Image showing the direction of a lip seal before being pressed into place in a gear pump.

Image showing a fully installed lip seal.

Pack the area between the lips with compatible grease. Animation showing area between lip seals being packed with grease in a gear pump
You can now complete the rest of the pump assembly.
   
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