FX CROWN O RING SIZE

5mm x 1 mm as confirmed on here and by Utah Airguns. Utah stocks them but you have to phone it in.

I picked some up on scamazon that are silicone (prior to Utah getting back to me). They fall out quick, so I put a little silicon oil on my finger and touched the o ring after I put it in to prevent it from dragging on anything.

I haven't used rubber cement or anything yet. I got a pack of 20 so... it will take a while before I get concerned again.
 
5mm x 1 mm as confirmed on here and by Utah Airguns. Utah stocks them but you have to phone it in.

I picked some up on scamazon that are silicone (prior to Utah getting back to me). They fall out quick, so I put a little silicon oil on my finger and touched the o ring after I put it in to prevent it from dragging on anything.

I haven't used rubber cement or anything yet. I got a pack of 20 so... it will take a while before I get concerned again.
Thank you.