3M / OS header O-ring size

[VicenteRC at aol.com]

I order then from McMaster Carr.  Part Number 9464 k32.  Description Viton 
O-Ring AS568A Dash No. 211.  I got 25 o-rings for $8.16.  Sounds expensive but 
they are Viton (not butile).  Viton is better for higher temperatures.  Each 
0-ring was $0.33.  It really not bad.

Regards,

Vicente Bortone
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