I got a hold of several cases of these and they are the steering column bulkhead seals that were made for the Dodge Viper but also had many applications going back as far as the 70's. I do not have a list of other apps as the company that Mfg'd these was bought out by another and all the records from previous applications were lost or deleted. I did, however trace one and showed the approx dinesional info. If you cant see it in the posting photo, I can e-mail the file photo. I have sold these individually at almost every swap meet I do and most that I sold were used for custom and street rod apps so if you mess with lots of custom cars, you cant beat this case price at 2 bucks each! Price is good on cases only! You could spend all day making a flange seal or just reach in the box and use one of these! I also have a nice variety of bulkhead seals for about any application(not included). Call for appt to inspect or purchase. Thanx