Main jet stem and pilot needle O-ring

Hi folks. Thanks to this great forum and the help of some very nice people, I've managed to properly dismantle my carbs and give them a proper cleaning. Bike had been sitting for 19 years. I'm putting an order together from Z1 but the only thing I'm not sure about is the O-ring size for the pilot needle, and the o-ring size for the main jet stem (does the main jet stem use an o-ring? It looks kind of like a washer, but im assuming its been pressed into this shape)

77 KZ650 B1.

From my listings:

Carb Parts
www.nrp-carbs.com
www.motorcyclecarbs.com
www.carbparts.com
www.carbkitscapital.com
www.pjmotorsports.com
www.jetsrus.com
www.sportingforless.com/servlet/the-Carb-repair-kit/Categories
www.oldbikebarn.com/Motorcycle_Parts/Carb-Rebuild-Kit
www.cycleorings.com/

Those are o-rings on the bleeder-pipe/main-jet.
I used o-rings from a HarborFreight metric o-ring kit. For the main jets, I don't think the size has to be absolutely perfect. Close enough ought to be good. My kit did't have any o-rings small enough for the air screws.

Fantastic! Everything i need, right here, www.cycleorings.com/VMkit.html