The first company of Diniz Holding Group is SKT, which is the leading brand of Turkey in the field of oil seals. SKT, a family company, was established in 1955 by the active names of Bursa industry, by three idealistic technical teachers.Skt produces sealing elements.

SKT serves to several industries, particularly for automotive industry, with its 350 personnel in its facilities in 14000 m² closed area in Bursa BTSO Organized Industrial Zone. Its main products are rubber and PTFE lip type radial shaft seals, piston seals, u-cup and vibration isolators..