Hi, I would like to know the price for GM40 diaphragm seal pressure gauge. I am interested in buying 30 Pieces. Please diaphragm seal for pressure gague. Material Teflon thickness .5mm outer circle 100mm No circles 6 hieight of curve 2mm. working pressure will be 20 psig. Thanks. M.Afzal Please provide us with a quotation. Thank you. Show More