This listing is for a Coleman Classic Propone / Gas Stove O Ring (o-ring) seal for the side connection.  As you can see from my picture, I have had flames coming out of this connection that burned my stove.  If the seal / oring is damaged or missing, a fire can happen at this location.  Not good. :)

The oring is 5/16 inside diameter, 7/16 outside diameter, width of 1/16.  Actual very precise measurements are: width=0.07", ID=0.301", OD=0.441".

Free shipping anywhere in the US.  3.00 international shipping.  Thanks for viewing my listing.  One oring is included.