Stop in for a cup of coffee
What I thought and what I have are apparently two different things. Information indecision...what I WANTED was silicone, made the assumption that was synonymous with synthetic. (buzzer sound) My ignorance. Since I've replaced everything from front to rear I want silicone. Looks like Amazon to the rescue. Tried local shops but the more I talked to the parts guys the more confusing it became to me.