... time and again. 2. used as cushion of oven Electronic oven---put on the button or nethermost grill of the ... electronic oven; Steam oven---put on the nethermost grill but not the ... button of the oven; Used as pre-process façade for its characteristic of resisting viscidity, and ... size, 2*2mm, 4*4mm, 10*10, etc. PTFE Oven Liner For Microwave