Try George Dyson.
He carries lots of appropriate sized tubing and will ship.

Send him an email and ask to see his data on cloth and tubing.

George is a little different.
You send in an order on a email.

He responds with a cost including shipping, you email to accept.

He ships you the material with an invoice.
You send him payment, snail mail. Not a credit card number.

George Dyson e-mail: gdyson@gmail.com
Dyson, Baidarka & Company tel: 360-734-9226
435 West Holly Street, Bellingham WA, 98225