Req: Ref. For Man 100 O-Ring

[Francois_uk]

Two of my Man 100 FP are currently lacking the O-ring at the top of the nib section thread.

 

Like this:

 

http://www.chezrossi.net/pen/o-ring.jpg

 

I presume any generic o-ring will do, but could someone confirm the size I need? I presume it is metric.

 

Also, do you know a supplier in the UK?

 

Thanks.

Edited February 12, 2019 by Francois_uk

[Left FPN]

I do not have a Man 100 section or O ring to measure but if you can or know someone with a vernier caliper it's a simple job.

 

Once the size is determined CousinsUK should have the O ring required or at least one that will do the job. I recently did this same exercise for the L'etalon section and ordered rings from Cousins.

[Francois_uk]

Thanks for Cousins. I knew of them for watches but did not think about them for pens.

 

Yes, a caliper would be nice to know for definite, but right now, not an option. Buying one just for this seems an overkill when someone is bound to know the correct size.

 

Cheers.

[Left FPN]

Could be a long wait for the precise Waterman code and or seal number.

 

There are ways without a vernier.

 

Take a piece of cotton, pass one wrap around the O ring groove diameter and mark where they cross over. Measure this length and work out the diameter. This obviously being the inside diameter of the O ring. A ruler may be good enough to measure the grove width. If it's difficult to get in with a ruler, press a piece of blue tack or plasticine into the grove, remove and measure it. Alternatively cut a tapered slither of paper, pass it though the grove and mark where it touches both sides...measure at the mark.

[Francois_uk]

Yes, some good ideas there. Thanks.