Features： 1、Wide Application: Used in pipelines, machinery, hydraulic and pneumatic maintenance, faucets, garages, workshops, automobiles, doors and windows, electrical appliances, bearings, pumps, etc. 2、Durable Material: Made of top grade nitrile rubber, heat resistant, and resistant to mineral oil, hydraulic oil, natural gas, kerosene, silicone oil, fuel and solvent, providing long lasting and reliable service. 3、Good Toughness: Industrial grade NBR has excellent oil resistance, UV resistance, ultra flexible structure, thick walled design, and durable. 4、Easy to Carry and Storage: There are 347 seals in total, with a heavy duty storage box to keep o rings of different sizes separate and organized. 5、Practical Repair Tools: This set contains common basic sizes for home and repair work, bringing convenience to your life and work. Commonly used in pipeline, mechanical, hydraulic, pneumatic maintenance. Specification： Item Type: Universal o ring gasket kit Material: Rubber Fitment: Suitable for trucks, agricultural vehicles, tractors Package List： 1 x Universal O Ring Gasket Kit