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Bumper material for Mackbrass 410CC?

Posted: Tue Feb 22, 2022 7:28 pm
by royjohn
I bought some 3/16", red silicone O-rings, 70 durometer, for replacement bumpers for my Mackbrass 410 CC,
but I find they are too thin. Apparently what is in the horn was stock that was cut down from something
larger to fit. Does anybody have a source for the proper stock for this?

Meanwhile I have four, 4 inch, 3/16" diameter O-rings which I can't use...if they will fit your horn, PM me
with your postal address and I will send you some...
TIA,
royjohn :oops:

Re: Bumper material for Mackbrass 410CC?

Posted: Wed Feb 23, 2022 10:43 am
by The Brute Squad
Have you tried reaching out to Chris from Mack Brass directly?