1224647 | ORB-28000-400-N70 (Pack of 100) --- General Purpose O-Rings - 280x4 mm - Black Nitrile Rubber Bulk - Nitrile NBR, BUNA-N O-Ring 19.1x2324.1x244.0 9 mm Crowned Tooth Gear

9 mm Crowned Tooth Gear Couplings - - Sold per Each:

4mm is 151 in

Reid Tool® AJ-669

Gates® 16AT5-860

SC270M200CSKC

1224647 | ORB-28000-400-N70 (Pack of 100) --- General Purpose O-Rings - 280x4 mm - Black Nitrile Rubber Bulk - Nitrile NBR, BUNA-N O-Ring 19.1x2324.1x244.0 9 mm Crowned Tooth Gear280x4 mm Black General Purpose O Rings Nitrile (NBR, BUNA N) Sold Per 100: Base Category: O Rings General Purpose Top Level Category: O Rings General Purpose Nitrile Rubber Bulk Product Details Inside Diameter (ID): 280. 00mm (280. 00mm is 11. 024 in.) Nitrile (NBR, BUNA N) Inside Diameter (ID): 280. 00mm (280. 00mm is 11. 024 in.) Section (t): 4. 00mm (4. 00mm is 0. 157 in.) Colour: Black Hardness: 70 Durometer Brand: MBA Country of Origin: TW