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Arrow Pointing Left
Arrow Pointing RIght


To limit the shock transmitted to the recorders for setting and pulling operations requiring jarring impacts.


Consists of seven components:

1. Fishneck 2. Housing 3. Top Spring 4. Mandrel 5. Bottom Spring 6. Shaft Bushing 7. Bottom Sub

The housing contains the springs and the plunger.

The springs are located one above the plunger and one spring below on the plunger shaft.