There is a surfeit of selections in terms of gasketing material.  But in case you are within the food processing, it's far vital that every item that makes contact with the gasket remains unaffected. And despite the fact that silicone is inherently non-toxic, most effective a specially formulated food grade silicone is fit to be used with consumables.

FDA (Food Grade) rubber products are commonly used in applications where food or consumables are present, such as in the food processing, beverage, dairy, meat packing, and pharmaceutical industries.  FDA rubber products are also found within most food packaging equipment.  All FDA manufactured products are handled and packaged in a strictly hygenic environment and subjected to rigorous testing to meet the demands of the most challenging food processing and beverage applications. 

New Age Scaffolding Enterprises, Delhi, has been a proud supplier of high quality reliable food grade gaskets to whole of India since years. Our product line of food grade gaskets include -

Neoprene Rubber
Silicone Rubber
Plain PTFE.

These are non-toxic,  non-allergenic.They have a high quality, long-life sheet designed specifically for general gasketing, countertops and skirting in all areas of food processing and pharmaceutical and cosmetics manufacturing. We keep stocks of FDA approved Soft expanded PTFE gaskets from KLinger, the Klinger Universal Blue for thermal fluids appropriate for food and pharma industry and have been serving various names in Punjab, Uttarakhand, Himachal, Delhi and all North Indian states for their requirements since years.