Wearproof,oil resistant,inner sealing layer,nylon canvass as inner lining,outer ... license to use API monogram:7K-0106Character:Use wearproff ,oil resistant, high temperature resistant synthetic rubber as the inner sealing layer,nylon canvass ... wire of high strength as the framework material,and weathproff ,oil resistant and wearproff synthetic rubber as the outer protective coverWorking temperature ...