New Rubber Grommets, 7/16" ID x 1" OD x 3/4" Panel Hole Diameter x 1/16" Groove Width x .300" Overall Thickness.  Each bid quantity is for a Lot of Ten (10) Grommets.  You may bid / buy any number of lots, up to the total quantity available above.

These were purchased at an industrial liquidation earlier this year, and they were brand new in unmarked bags.  We packaged them in heavy Ziplok bags for resale.  Not sure of the exact type of elastomer; smells a lot like a car tire.

According to the calipers:

Overall Diameter:  1.040" / 26.43 MM

Inside Diameter:  .437" / " / 11.11 MM

Panel Hole Size:  .750" (3/4") / 19.05 MM

Groove Width:  .062" (1/16") / 1.58 MM

Overall Thickness:  .300" / 7.61 MM