http://tinyurl.com/qdrra7o
135mm x 3.5mm Rubber O-ring Oil Seal Sealing Ring Gasket Black
Product Name : Oil Seal O Ring;Material : Rubber
External Diameter : 135mm/5.3'';Inner Diameter : 128mm/5.04''
Thickness : 3.5mm/0.14'';Color : Black
Weight : 6g
Package Content : 1 x Oil Seal O Ring