... ring is flexible, it has high quality of peroformance.It can be used on various occasions. 1. Application: high-speed trains, aircraft doors, ... seal needs to contact with oil, organic solvent, etc., it can be made of certain rubber materials which are resistant to those ... the temperature of -55 to +180, it can be made of silicon rubber.WE CAN DESIGN AND MANUFACTURE DIFFERENT SPECIFICATIONS, IF YOU ARE ...