i need help fixing my airbrush.

The website I mentioned above seems to be working now: City Models

Click on Catalogue on the left and then select Sparmax from the manufacturers list.

Yeah i know stanbridges sells sparmax parts, i bought a Cleaning Pot there just yesterday, they also have several other sparmax itemsim intrested in buying such as a paint closet and airbrush stand. 

Thanks for the help, my airbrush should be up and running soon.

The one I found listed at $17.95 just came up on the list of search results, but the page won't open, so it may be out of date. The listing was for City Models, which, from what I can find is in Perth, but as mentioned, the web page doesn't open, so I don't know if the shop is still operating. I did find a phone number listing, (08) 9321 4339 so you might wish to try that and see if you get an answer.

Stanbridges in Perth carry Sparmax spares, but don't currently have the 0.3 tip listed.

As far as the different branding goes, it does not surprise me. Badger and Iwata brushes can be found under different brand names too.

Cheers mate, that realy dose help alot.

To answer your question im in perth, WA.  Could ya teel me where you saw the ones for 18 dollars, i found nozzels but there $31 EACH.  Something you might be intrested to know and perhapes you cpould answer this for me.  The box the airbrush came in was labeled Delta, not sparmax but i compared it with a sparmax one and apart fromt he different labeling they are identical in every way.  Whats up with that?

That's probably the smallest O-ring I've ever seen (I have a Sparmax SP-35 with a 0.35 nozzle). In normal use you shouldn't need to remove the nozzle for cleaning. The only time I had to remove it was to clear a hard blockage. It was pretty hard to find sometihng thin enough to push through the tip of the nozzle - I ended up using a single strand from the core of a piece of stripped wire.

A quick search for a local supplier has been somewhat inconclusive the prices I've found range from $18.00 to $30-something.

Where abouts are you located? Your local hobby shop should be able to order the requisite part from the distributors, JB Wholesalers The website says "trade enquiries only", but their email address is sales@jbwholesalers.com.au

Another option to consider is buying from overseas. LuckyModel (in HK) have the part listed at (US)$8.99 plus $0.50 postage - so that should work out to about $12.00 AUD. Link to item is here