Gaskets DONIFLEX GS,G-MD,DONIFLEX G-LD C,DONIFLEX EM Gaskets Sheet Packing Gaskets, Gland Packing, PVC Curtains, Insulation, Rubber Sheet, PTFE Teflon, and others. We are always committed to always innovate in achieving a leading and trusted position in line with the growth and development of the needs in the industry which is very fast. make. Consistency towards customer satisfaction is an important factor in supporting our success.