Double cardan drive shaft question

[JaysonB]

I’m installing new u joint in the front and rear drive shafts of my 04. The rear has a SYE and the centering yoke is grease-able. My question is the front drive shaft has the rubber cup seal around the centering ball, but the rear shaft doesn’t. Do they all have that rubber cup seal??

 

[JKP]

Non greaseable has the seal, greaseable does not.

 

[JaysonB]

T

Non greaseable has the seal, greaseable does not.

Thanks for the reply.