The prestige gasket is made from the best rubber and it is self compensating. It does not impart and colour, taste or odiur to the food in the cooker. When steam start s to leak around the rim of the cooker, replace the gasket immediately with an original prestige rubber gasket. This will help your prestige pressure cooker to build up pressure effectively and speed up your cooking. Made of food- grade Nitrile rubber,Capacity for 6.5lit,8lit,10lit,,,.