MIC valve rebuild?

how much do these kits go for? i just took mine all appart cause my front wheel stays up and even when i dump all tha air it goes back up. so i took everythign appart and there is a huge slice in it and a nick on the othe rside i been all over and i cant find the damn lil o ring anywhere not even close

i just ordered the rebuild kit im a idiot an dordered it and got it 3rd day cause it was $30 to do next day if it was to the point where i cant drive it id do it but i spent $28 on the rebuilt kit so im still looking and no i do not have the dimensions if i did id have myparts store special order one they can get me anything so if anyone else has specs on the orings please leme know thanks

ya so today i wen tto ace hardware and i found the oring i thoguht was mine but it is a hair to big i mean by a hair its tight good thing i bought 3 of them becuase each one is a di]fferent size even though the sizes are the same size so i got the smallest one on there and its tight itll work for now until i get the rebuild kit this week thanks