Driveshaft

[Gabe92]

I'm replacing my u-joints and when I removed them this ring of either compressed oil or plastic broke off. Does anyone know the significance of this? Should it be there or is it trash?

 

[Mullaney]

I'm replacing my u-joints and when I removed them this ring of either compressed oil or plastic broke off. Does anyone know the significance of this? Should it be there or is it trash?

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Should be considered trash and there should be a solid ring that goes in its place.

 

[Bob H]

Factory injected plastic to retain the caps, replacements will have metal clips.

 

[nyoffroad]

As a guy that has never had a new vehicle I've rarely seen that, and the ONLY time I have seen the oem U-joints with that plastic has been on CUCV's and they have been some of the oldest vehicles I've had, kinda odd.