O ring material

What is the material that BS 111 A clamp cylinder valve O rings are
made from? Nitrile? EPDM? Viton?....

TIA.

> What is the material that BS 111 A clamp cylinder valve O
> rings are made from? Nitrile? EPDM? Viton?....

Any of the above. BS111 specifies size only.

Iain

Yes......... but the material they are made from is......?

>> What is the material that BS 111 A clamp cylinder valve O
>> rings are made from? Nitrile? EPDM? Viton?....
>
>Any of the above. BS111 specifies size only.
>
>Iain
>

Manic Grin wrote:
> Yes......... but the material they are made from is......?

Like Iain said, it could be any of them.

- Keith

> >> What is the material that BS 111 A clamp cylinder valve O
> >> rings are made from? Nitrile? EPDM? Viton?....
> >
> >Any of the above. BS111 specifies size only.
> >
> >Iain
> >
>
> Yes......... but the material they are made from is......?

http://www.allorings.com/material_selection.htm

Anyone know what the difference, if any, between the blue capped silicone
grease that sea & sea have for their cameras and normal grease is? It would
seem I've lost my tube down on my last trip. Neither of the LDS have any and
keep trying to flog me ordainary grease saying it's the same thing. I
remember reading in the manual it warned not to use other grease as it would
gum up the o-ring or something. Any ideas?

As a side note, some o-ring greases are specifically designed to make the
o-ring material swell slightly, and some are designed specifically not to.
For an application where a failure of the o-ring is critical, then I'd
either make sure you understand what the tech-spec of the grease requyired
is (then go to a bearing and o-ring supplier possibly), or use the
"official" product.

Obviously your post is because you realise the importance of the "right"
grease, but I thought I'd just post this for general interest of those who
might think all silicone grease is interchangeable...

Just cut from web

Let me rephrase-
what material should they be for use on your cylinder valve?

Woz.

>> >> What is the material that BS 111 A clamp cylinder valve O
>> >> rings are made from? Nitrile? EPDM? Viton?....
>> >
>> >Any of the above. BS111 specifies size only.
>> >
>> >Iain
>> >
>>
>> Yes......... but the material they are made from is......?
>
>http://www.allorings.com/material_selection.htm
>

> >> >> What is the material that BS 111 A clamp cylinder valve O
> >> >> rings are made from? Nitrile? EPDM? Viton?....
> >> >
> >> >Any of the above. BS111 specifies size only.
> >> >
> >> >Iain
> >>
> >> Yes......... but the material they are made from is......?
>
> Let me rephrase-
> what material should they be for use on your cylinder valve?

What part of "Any of the above" did you not understand? Nitrile, viton and
EPDM are all suitable materials for use with air. Viton and EPDM should be
used if they will be exposed to and FO2 > 0.4.

In anticipation of your next question, I use o-rings of between 75 and 90
durometers.

Iain
Iain

<snip>

>
> In anticipation of your next question, I use o-rings of between 75 and 90
> durometers.
>
> Iain
> Iain

WTF is a durometer?

Expect that?

CAS
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"CAS" <calumscottTAKETHISBITOUT@yahoo.com> wrote in message
news:bq4fha$1u3psn$1@ID-193985.news.uni-berlin.de...
> <snip>
>
> >
> > In anticipation of your next question, I use o-rings of between 75 and
90
> > durometers.
> >
> > Iain
> > Iain
>
> WTF is a durometer?
>
> Expect that?
>
> CAS

It's how long they last when being used. AKA, how DURable they are.

usually the higher the durometer rating, the harder and stiffer the
substance.

rhys