compressor end cap

[LaTriton]

serial number 1B839289 i have removed the end cap to check the condition of the compressor and it looks good. I need to install the end cap and am going to order o-rings, but I see that in the manual it says to use threebond 1217F sealant and to make sure to not let any sealant get in the undercut above the o-ring in the picutue. Is this product necessary? There was not any on the end cap when I removed it. If it is needed, how would this be applied and not get any in the undercut? Would it have to be a 1/8" bead that is fully cured before installing? It is pretty tight now without this material.
thanks

20230128_162338.jpg

[DewRonInc]

That looks like ultra gray, ultra gray is sensor safe, idea is to give it a guaranteed seal, always coat o rings after install with 2 stroke oil, lightly. I use ultra gray with no issues, done a few. Always lube up bearing in top and rod bearing prior to sealing up. Remember to torque cap bolts also, do not let dry, ultra gray, just get tacky and install

[JOE54]

^^^^^ + 1 , was compressor noisy or debris found in rails ?????

[LaTriton]

Thanks DewRon, that is the info that I needed as well as lubing the top bearing. I wonder why it wasn't sealed off prior to me removing the cap.

[LaTriton]

Joe; no it was not noisy and I found nothing as far as debris. I just needed peace of mind and wanted a look inside.
thank you