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MS28775-21Z What is the "z"?
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Author:  Airlift48 [ Tue Mar 27, 2012 7:22 am ]
Post subject:  MS28775-21Z What is the "z"?

I'm trying to find all the seals to repair an AN6201-1 hand pump. I've managed to order all of them excelpt MS28775-21Z. What is this part number? I can't find anything on it. Is it just an MS28775-21?

Thanks!

Author:  Sabremech [ Tue Mar 27, 2012 9:16 am ]
Post subject:  Re: MS28775-21Z What is the "z"?

Hi Kevin,
It could be an MS28775-212 which is a thicker o-ring than say an MS28775-21.
David

Author:  Airlift48 [ Tue Mar 27, 2012 1:10 pm ]
Post subject:  Re: MS28775-21Z What is the "z"?

David,

You might be right, however, it's a typed document.

https://wwwproc.redstone.army.mil/acquisition/padds/web/W58RGZ06R0421/attach_exhib/B-1%20Manual.pdf

I'm sure it's Z and not a 2. However, can anyone verify? Maybe there's a typo here?

Page 21 of the document, page 36 of the file...

Part 5-52

Thanks..

Author:  Airlift48 [ Tue Mar 27, 2012 1:24 pm ]
Post subject:  Re: MS28775-21Z What is the "z"?

David, you are absolutely right.

I found a different copy of this TM and while the parts list also indicated 21Z, a supplement listing of repair parts to have on hand lists it as 212.

http://www.scribd.com/doc/32049806/B-1-Stand-Manual

Thanks for the suggestion, made me dig deeper...

KK

Author:  Forgotten Field [ Sat Mar 31, 2012 4:28 pm ]
Post subject:  Re: MS28775-21Z What is the "z"?

If you haven't found it, I have used http://o-rings.com. They are reasonable, and they will package your stuff for 10 year shelf life.

Author:  John Dupre [ Mon Apr 02, 2012 4:50 pm ]
Post subject:  Re: MS28775-21Z What is the "z"?

Forgotten Field wrote:
If you haven't found it, I have used http://o-rings.com. They are reasonable, and they will package your stuff for 10 year shelf life.


You could also cross reference to the new part numbers (M83248 series I think, no references to hand) that have unlimited shelf life :)

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