... purity, 2, Voltage resistance, 16-25V, 3, available for gas utensils, gas portable stoves. 4.Good insulat Model: Alumina ceramic TubeFeatures:1 ... corrosion resistance under high temperature,4, High dielectric properties,5, Gas tight for many applications to provide protective atmospheres or high ... /T, West union, etc.Shipping and Delivery: by air/sea, in 7-10 days after receiving the payment