1. Handbook of fluid sealing;Robert,1993
2. Fluid sealing technology;Muller,1998
3. SAE Fluid Sealing Handbook Radial Lip Seals, SAE HS-1417, 1996.
4. Shaft Seals For Dynamic Application, Chicago Rawhide Manufacturing Company. New York: Marcel Dekker; 1996.
5. Simrit Standard Catalogue, Freudenberg, 1993.