Very thin washers to shim up a breech seal

[vernongt]

G'day Hatsan shooters,
Can anyone tell me where I can get some "shim washers" [VERY THIN], that I can use to shim UP the breech seal in my 125s?

I'd also like to do the same for my Benji Trail NP XL as well. 
If you know that the same shim works in both rifles, I'd be delighted to know that too?

If I need to purchase them from a hardware store, could you tell me the sizes [OD, ID & thickness]?

Vernon

[Smoketown]

Most people use dental floss or plumbers tape under the o-ring.

If the o-rings are flattening out it may be time to replace them.

Local hardware stores or industrial sales are good choices.

On line at 'the o-ring store' if you want to buy cheap and in bulk.

I store my air guns 'broke' so there is no pressure on the o-ring.
(Not cocked, just the action disengaged from the detente.)

Cheers,
Smoketown

[Tommy]

I bought a hole punch set that is used for leather for $13 on Amazon
You can make as many as you want and any thickness.I made some out of a coke can
Tom

[blackfocal]

Hatsan USA sells them

[Ontarget58]

I bought Mylar flat washers at my local hardware store.  They are thin and come in different ODs.  The required ID can be produced with either a Dremel and a cone shaped grind stone or by using a hole punch.  These washers can be made even thinner by rubbing them on 400 grit sandpaper.  Works very well for me.

[ezman604]

Crosman also sells them.