blue-stuff bead
Hi, Husabutt...
That looks a lot like some of the Permatex stuff I've used, both on the motor and exhaust system. Permatex supplies to a lot of auto supply chains as name-branded items. Permatex Ultrablack for exhaust, same as CarQuest Supreme Black #26886, use it on my 'berg, doesn't blow out, stays in place 'til you take it apart. I have some VersaChem Superblue silicone #613-3 that looks like the pics and the bits still on my '98, have used it on the valve cover, no problems....
I just can't lay a bead as neat as that...!!!!
I grew up in the automotive service industry; we had two old fashioned Chevron full service gas stations and a full service garage in Wilmington, Cal. Dad was in business from mid-'40s 'til he passed away in '76. Permatex was about the only sealer around worth using. We also sold a lot of RPM Delo!!!!!!