Hemi head O-ring part number?

I need to order a couple of sets of the O-rings (thin diameter O-rings) that fit down in the spark plug hole that seals the spark plug tube bottom end when inserted in the head. Can someone give me a source, part number or where to order? THANK YOU!

 

I hate to see guys suffering for this type of stuff just because they do not know that - Full Race Supply has it ALL in stock and ships world wide.
1-800-313-7223 in the USA or 760-567-8765 outside.
You can send email too fullracesupply@yahoo.com
Visa Master Card Discover or Pay-Pal

OK OK I know this 'appears' as a blatant advertisement for Full Race Supply but as the first sentence says - it is really for informational purposes and directly answers the original posters question.

 

O-rings

BAE AJ RBS etc.They are all in CA They can just drop them in the mail. If you need numbers e-mail me @ donimus333@yahoo.com

 

Take your head to any good bearing house, and they should be able to fit the standard o ring to the groove. If you can't find it, call me, and I'll get the number for you.

626 815-8815.

 

Lawson products very cheap