[WIDE APPLICATION]: Used in garages, plumbers, machinery, workshops, car, doors, window, electrical appliances, bearings, pumps, rollers, etc. [HIGH-PERFORMANCE]: Excellent oil resistance and UV resistance performance. [EASY TO STORE]: All gaskets are packed in a plastic box to keep them organized, cleaning and easy to find. []: Nitrile rubber (NBR) O-ring sealing, heat and wear . [300PCS O-RING]: Come with different size of O rings to meet your needs. Item Type: Sealing O-Ring Size & Quantity: 9.19x2.78mm-25PCS 9.92x2.62mm-25PCS 10.78x2.62mm-25PCS 11.91x2.62mm-25PCS 12.37x2.62mm-25PCS 13.1x2.62mm-25PCS 13.95x2.62mm-25PCS 15.08x2.62mm-25PCS 15.54x2.62mm-25PCS 15.88x2.62mm-25PCS 17.13x2.62mm-25PCS 17.88x2.62mm-25PCS Colour:black Material:rubber Package Contents: 300 x Sealing O-Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.