New sealing ring, seal in plastic for the mainshaft in the gear suitably with Jawa model 353, 354, 559, 360, 590, 592, 362 California, 633 Bizon, 553, 554, 634, 638, 639, 640 and Jawa Perák with 250 and 350 cubic centimetres. Moreover, suitably with CZ of the models 450, 453, 455, 473, 470, 475, 501, 502, 505. This ring has a paragraph for the O ring 4,6x2,3. Measures: approx. 11x5x5mm
