Sam,

I'll find from my file what you may need and if I can find it you could send me one of your email addresses and I can send you stiffness of rubber bellows from Garlock I used 4 years ago. There was a name of a lady supervisor too I had talked to and she was the one who send me the data and you may talk to her too. Hopefully the size you need is in there. Let me know.

Ed-Lamigo