Couplings & Gaskets

SIGMA couplings are a strong & heavy-duty system that provides maximum reliability with minimum need for maintenance. This is achieved by use of easy to install corrosion resistant gaskets and carefully dimensioned individual parts of the coupling. The material of construction is selected based on the type of products being handled & the atmospheric conditions of the installation area. For GMP application SS coupling with SS nuts & bolts are used. PTFE bellows are used to compensate for different thermal movement between the glass and associated equipment, absorb vibrations from associated equipment or foundation. PTFE ‘O’ Rings are the most widely used gaskets. They are manufactured from pure, high-quality PTFE and offer almost identical properties corrosion resistance to borosilicate glass.