BUNA-N - AS568A Aerospace Standard ID: #111

Recent prices for these orings in Neoprene has been absolutely ridiculous (over 18 bucks for a 100 pack) - so we have brought in some BUNA-N orings in this size.  

BUNA-N is not as durable as Neoprene is for call making - more specifically, it has a tendency to dry-rot faster than Neoprene.

5/8" OD - 7/16" ID - 3/32" Thickness  - 100 per package

These can be used with the WCO500 but are a touch small and will require a very accurate bore.  Some use these o-rings for 5/8" AR style duck call inserts, but we feel the sectional width (thickness of the oring) is too large leaving the gland as a weak spot and more prone to breakage, and suggest the #013 oring over the #111 oring because of the smaller sectional width of the #013.