[TowerTalk] Prop pitch rotator seal

[Les Kalmus]

John,
Take a  look at HomeDepot: 
https://www.homedepot.com/p/Oatey-All-Flash-No-Calk-Vent-Pipe-Rain-Collar-with-3-in-4-in-Adjustable-Diameter-14137/204719955
This is a roof vent collar you can use to cover that area. There are 
many sizes and placed you can get one so look around. It's what I used 
in the past.

Les W2LK

On 2/23/2026 14:05, john at kk9a.com wrote:
> I have a medium K7NV prop pitch that I took out of service when I moved in
> July 2024 and it has been stored inside ever since.  I would like to use it
> now for a rotating tower that I will be installing.  The rotator still turns
> fine but I am concerned about  future water ingress which seems to be
> damaging many K7NV rotators.  I see a black rubberlike ring below the bevel
> gear on the mast clamp assembly but this black rubber ring has small section
> missing.  If that is supposed to be the seal, there is a gap in it.  Perhaps
> it disintegrated. Has anyone changed the seal on a K7NV prop pitch?  I am
> not even sure how the mast clamp / bevel gear comes out of the ring with the
> bearing.
>
> John KK9A
>
>
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