Retaining rod seal

[adriaticsea]

[color=#000000]Hi everyone,

I'm building the pressure hull for my 1/96 Permit, and decided to use the WTC system. The cylinder main seals are at the endcaps, and I used axial compression for them ]

[raalst]

I do have a few

I do have a few standard sizes of o-ring,
some with 4 mm inner diameter.

if you send me a personal message in this board with your details
I could mail a few.

would that solve the issue ? or is the rod not exact 4 mm diamater
?

[anonymous]

Mike's Subworks has the seals

Mike's Subworks has the seals you need. They are the hobby standard and 90% of the people here on this site use them.

http://www.mikessubworks.com/page1.html

14 bucks gets you a package of 4.

Hope that helps.

Steve

[raalst]

I know for sure you

I know for sure you know what is out there, Mauro,
but just for completeness ]his webpage[/url]

[anonymous]

A lot of shameless "plugging"

A lot of shameless "plugging" going on for products!
Also 78.5 % of people don't agree with your 90% value!


I think you have also misunderstood Mauro's problem. It sounds like he is wanting to seal a threaded rod emerging out of a flat plate. I would suggest a flat rubber washer with a metal washer on top. I seem to remember a very good article by Jim Butt which discussed a similar home made WTC's in the magazine.

David

[boss subfixer]

Art broder also did an

Art broder also did an article on this called "how to outsmart a house fly". He made gaskets from old tire inner tubes. Check it out in the September 2003 issue of the SCR.

[adriaticsea]

Hi everyone,

thanks for all the

Hi everyone,

thanks for all the advices. Davy, you just got the problem. I have to seal the retaining rods that, coming out of the flat surface of the endcaps, hold them tight on the pvc tube flange in order to keep water out. Boss, I just remembered my past SC reports, and Art Broder's article too. My memory is not serving me so well these days . Thanks again, I think I'll use a flat gasket made from inner tube along wit a siliconed metal washer on the endcap to have a better mating surface.
U812, thanks for Mike's site, but, living in Italy, it is a bit of a problem for me to order small fittings in the USA.
BEST REGARDS MAURO

[Guest]

Be aware, that if you

Be aware, that if you are using open nuts on threaded rod, there is a strong chance water is going to work it's through the thread and into your cylinder with the help of water pressure and capilliary reaction.

My advice would be to place the rods on the outside of the cylinder- then you don't need to concern yourself with sealing them at all.

If that is out of the question, then you must use blanked off nuts.

You can make these up with some simple tools. A lathe helps, but isn't essential.

Failing that, you could cap off the end of the nuts with small pieces of sheet metal. Epoxy would work, or solder for a better job (using brass nuts will help for the latter).

Andy

[anonymous]

You are welcome. Also you

You are welcome. Also you can get them from Subtech in the UK I believe.

Steve

[anonymous]

A lot of shameless "plugging"

A lot of shameless "plugging" going on for products!
Also 78.5 % of people don't agree with your 90% value!

HA! HA! You crack me up. I wave my private parts in your general direction. LOL!!!

Steve



Edited By U812 on 1144480611

[adriaticsea]

Hi Andy,

thanks for the advice,

Hi Andy,

thanks for the advice, I had prefigured that water could work its way into the threads, and bough M4 stainless steel capped nuts. With the aid of the rubber gasket they should do a good sealing job.
BEST REGARDS MAURO

[anonymous]

Prego Mauro!

Ciao,

David

Prego Mauro!

Ciao,

David

[Guest]

Ah, you're good to go

Ah, you're good to go then. Crack on!

Andy