CS Hyde has 2", you'll have to cut it down or call for a custom quote:
http://catalog.cshyde.com/viewitems/tapes-with-psa/uhmw-tape-acrylic-adhesiv
e?
<http://catalog.cshyde.com/viewitems/tapes-with-psa/uhmw-tape-acrylic-adhesi
ve?&pagenum=2> &pagenum=2

Stuart

From: Mike Miller [mailto:mwmiller6@att.net]
Sent: Monday, July 22, 2013 4:43 PM
To: Stuart MacMillan; vanagon@GERRY.VANAGON.COM
Subject: Re: UHMW tape for sliding door track

If anyone finds a source for 1 1/2 wide 10 mil UHMW tape please post it.

Mike

  _____

From: Stuart MacMillan <stuartmacm@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM
Sent: Monday, July 22, 2013 12:32 PM
Subject: UHMW tape for sliding door track

I've checked the archives on this, but I'm finding so many variations in the
price and thickness of this product I'd like to find out what thickness and
brand those have you who have done this used.

For those who don't know about this mod see:
http://www.thesamba.com/vw/forum/viewtopic.php?t=381226

I've seen it up to .030" inches thick for about $60, but that seems like it
would be better for the bottom track.

My philosophy is usually the bigger the better, including debt.

Thanks!

Stuart