35-36 Ford and Chevy cap radiator cap

We made the embossed caps for the 1935 and 1936 Ford cars and lo' and behold it turns out they fit the 1935 and 1936 Chevy cars and a myriad of other vehicles too.

This is the conventional size and fits a variety of other vehicles that  utilize the inverted cup that rides and "formed ramp" until it strikes the downward facing tab stop.  Its commonly called a bayonet-style cap and was used with with non pressure systems. 

We have tested these and we estimate that the fiberboard seal and inverted shallow brass cup behind it create a resistance of ~3psi.  It is intended for non pressure systems