Jump to content
Numb-nuts

Replacement O Rings and weather seals

Recommended Posts

At this moment I am taking shelter in my client's office because there is a huge rainstorm .

I was asked to attend to see why a speed dome is collecting water. I opened the dome up and first thing I noticed is that the fall wire has not been installed, the second is that the O ring seal is completely perished and cracked. A call to the manufacturer/importer had me talking to 'a very disinterested customer service operator'. The outcome is that a replacement O ring will cost about £20 plus delivery and tax. about £40 in all

Whoah. "MAJOR RIP OFF"

 

A quick call to an O ring manufacturer, lead me to discover that I can obtain O Ring chord.

They wanted me to buy a 200m roll. A quick look on ebay and I found several sellers selling it by 1m lengths, so I bought 5m. I bought 1mm diameter. The idea is that you cut it to length and superglue the ends together. I haven't done it yet as I have to return after the chord arrives at my house. I was advised that Gorilla superglue is perfect as it uses a rubber cement base. I just happen to have some in my toolbox.

 

I haven't found a perished seal before, so this is a new problem for me, but next time I'll be ready. Meantime, I am planning to seal the dome up with duct tape until I can return.

 

What can I do about the anti-fall wire? I was going to use nylon string but I don't know if that will suffice? I'd hate to see someone else opening the dome in future and dropping it.

I though I might use copper earth wire and insulated crimp terminals, don't know if that will work well enough.

Share this post


Link to post
Share on other sites

UPDATE

 

Well my O ring chord arrived today and I obviously underestimated the diameter of the seal I needed for the Dennard housing. I think it should have been more like 2 or 3mm diameter.

 

I will have to reorder it now. I am at home today as it's horrible cold and wet outside and there are no urgent calls for maintenance. Incidentally the O ring chord is available in all diameters 1mm through 10mm and probably bigger than that if you asked for it.

I just know that if I buy a few sizes it will be years before i need it again and by then I will have lost it somewhere.

Share this post


Link to post
Share on other sites

Home Depot (or equiv) or plumbing supply houses usually carry o ring kits. Nice to have for those butter finger "oh $%&*!" moments on a ladder/ scissor lift.

Share this post


Link to post
Share on other sites

I have a little O ring selection box which is quite handy but O ring chord is also useful.

Some metal junction boxes use them too and PTZ domes as well as housings. I will have a look next time I'm near a plumbing suppliers place to see if they keep those kits. Worth having for sure provided they don't cost too much.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×