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