... PC) 3.Adhesive 3M467,3M468 4.metal dome tactile flat membrane switch Membrane switch designMaterialPET(polyester),PC(polycarbonate)DimensionAccording to customer's demand,OEM ... Tolerances:+/- 0.10inch(+/-0.25mm)Best service + best price+best quality Are widely used in industrial, mechanical, electronic, medical, instruments, ... , solder pins and heat seal connectors are available flat membrane switch