Hi all,
I have a box of various O-rings and a parts list that calls for a 19 x 2mm O-ring. The 2mm bit is fairly obvious but is the 19mm the internal or external diameter or the average of the two or some other measurement? (circumference???)
thanks
It's the outer diameter.
Nick
usually the OD.
Martin P
If you ask for a 50 x 4mm O ring it will measure 58od.O rings are measured ID x Section and always have been. Mark.
Id then section as per here.
-- Steve Larne
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OD
So that's three votes for OD and two for ID.
Anyone else :)
Spod
Seems like ID to me.
Gentlemen, Even though I have always specified OD and section without a problem I stand corrected as all of the Web sites I have just looked at state ID. I good to know that the trade counters I use can subtract though :-))
Add me to the ones standing corrected. It is ID.
Nick
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