I've made them using wax can covers (brand escapes me just now).  I had
one that fit perfectly but when I had it off one day my brother,
thinking it was trash, tossed it.

The one I've been using for the last 4 years is yellowish (see through)
and would be too loose but for a ring of 14 ga electrical wire that I
put around it each time I put it on.

It has been on for numerous trips from Maine to Virginia and many places
in between and has never blown off.

I'm thinking I should probably paint it with Krylon Fusion (paint for
plastics) to give it some UV protection.

Mike

Mike "Rocket J Squirrel" Elliott wrote:
> After switching from a Dometic to a Norcold refer we no longer need the
> flue vent as it is not hooked up. I placed the flue vent cover
> (original) over the vent to keep out the elements. This afternoon I
> noticed that it looked kinda crooked or something, so I went to press it
> back into the rubber surround and it just cracked and crumbled. Not
> designed for UV or something, I reckon. Are there more durable
> replacements? Tupperware bowl or something? Duct tape? Really big ball
> of gum?
>
> --
>
> Mike "Rocket J Squirrel" Elliott
> 71 Type 2: the Wonderbus
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
> KG6RCR
>