According to temperature, pressure and choice of material media. Star-shaped ring in order to adapt to a given application should be considered the work of all the constraints among parameters. In determining the scope of application, it must take into account the peak temperature, the temperature and continuous operation of the work cycle. Occasions in the rotation, it is also necessary to consider friction as a result of the temperature rise caused by heat.

(A) polyurethane hydraulic oil imports, such as: UHS, UN, UNR, UHR, UNP, Yx, KY, and DH, FC dust, etc.;

(B) PTFE seal, such as: hole with a square circle circle-axis with the ladder, combination of letters CST, GDKK, GKDF, rotating shaft with a square circle, a square hole with rotary circle-oriented band (ring) and ring, etc. ;

(C) hydraulic rubber seals, such as: U-shaped, Y-shaped, Yx-shaped, KY circle-shaped and all kinds of dust, etc.;

(D) rotating rubber seal, such as: seal, seal, etc.;

(E) based on seal, such as: O-ring, star ring, 982, such as combination washer;

(F) nylon, POM support the production of ring-oriented covers.