Hi,

Yes you are absolutely right!
You are so right as rain you should be soaked in water. (:)

That’s exactly how the labeling of things happen in a territorial world of being different, but sharing the commonality of being lazy or cheap, while at the same moment of trying to create proprietary specialness!
Boy that was a mouthful of human, of what ever, you can label it!

Almost all mold or casting cores usually have to leave some sort of indication of how the material gets into a mold and how it get releases from it!
Plates are made as fillers and names can be written and changed at will!

Some have seams to say it was in two or more sections.
Some show circles where pins reside at the surface. There has to be clearance around the pin for it to move and that creates a line on the part.
After each cycle the pin moves out and back to eject the molded item.

There are also places where the material enters and a vent for air or inert gas to escape. Even when vacuum molding is done there has to be an exhaust port.
There are technical terms or names for these specific areas. It’s late after a long day of driving to get new hearing aids for my Birthday. I cannot recall them, without reliving those few hours and thinking it through.

I was told about some of them, one afternoon, when I was able to sit down with an old timer injection mold maker, that owned his own shop in the Los Angles area for years!
His passion started during the final phases of WW II, as a teenager, making dies to make or assemble parts for the air planes. He showed me parts, he made sometime later, that were so small human hands could not make but conceive!
He passed away about five years ago.

He was very wealthy during and after he sold his shop, or at least, for the two wives and one girl friend he went through.
He said worked so much and loved it so much, because he had a talent to envision the workings of tricky molds on tricky parts that designers could think up but not find builders for.
He broke it down and made it simpler out the gate! Ah, GATE! That was one of the terms! SPIRES was another one!
He did a lots of work for GM for many years because he had answers and product other die makers turned down. GM is crying for tool and die talents today!

Yep, thats what happen, he said, he left them unattended but occupied, spending money!
From what I gleamed from him, told me why I’m still married to the first Bride!
I never was that talented or in love with work, to make myself that rich!
I have met many people like that during my years of past.
I don’t know if the future generations are going to ever have that many again, in this country!

Anyway I’m looking into purchasing some Corteco seals to see what they look like and compare them to National/SKF. TIMKEN buys from them too!
This stuff is like tires, you buy enough of them, they will put your name on them! In white letters too!
ELRING has turned me off to a lot of their products but on their seals more than any.
ELRING buys from vendors, just like Beck/Arnley does and it’s very possible Corteco does it too?

SKF bought out Chicago Rawhide years before or around when National also was looking to merge with someone. They have had a “three way something going on” over the years, swapping parts and making deals!
I was writing another post to put up on another thread about my experiences with seals but I got busy with this Birthday thing and have not posted it.

Your question broke more ice!

Hope this helped!

Phil