Coolant leak - so I'm replacing both hoses on the bottom of the
radiator ('90 2.1 with alloy wheels).  Already have the new ones
(thanks Bus Depot!), but there is a part that I don't have - there
was a nylon (maybe) o-ring fitting thing inside of the straight part
of the hose.  It fit around a corresponding groove on the plastic
tube that returns(?) water to the engine (if I have the directions
right).  After pulling the hose off the back I found it inside of the
hose.

What is this part?
It doesn't look like a classic o-ring.
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The angle is exaggerated.
It has a lot of rusty fibrous stuff on the larger-diameter part of it.

There's no evidence of it in the Bentley manual and I'm reluctant to
install the hose without a new one.
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bcnu - Grungy  (Kailua, HI)
'60 dddPanel '69 Bug '90 Vanagon '93 Eurovan '00 Audi A6 Avant
grungy@grungy.com           opinions are just that.obviously.