These high vacuum rated, stainless steel, corrosives resistant bulkhead feedthrough fittings have a Viton O-ring, and have 1/8" FNPT female national pipe threads on each side. These fittings fit a 1" hole through and can be used on bulkheads up to 1" thick. Stainless Steel 1" FNPT Bulkhead Feedthrough Data:Body Material: 304L Stainless SteelSeal: Viton O-RingUltimate Vacuum: 10 Torr (High Vacuum)Dimensions: A = 1.25" Max., B = 1.0", C = 1.75" Max., D = 1.875"

These high vacuum rated aluminum bulkhead feedthrough fittings have a Viton O-ring and have 1/8" FNPT female national pipe threads on each side. These fittings fit a 1" hole through and can be used on bulkheads up to 1" thick. Aluminum 1" FNPT Bulkhead Feedthrough Fitting Data:Body Material: 6061-T6 AluminumSeal: Viton O-RingUltimate Vacuum: 10 Torr (High Vacuum)Dimensions: A = 1.25" Max., B = 1.0", C = 1.75" Max., D = 1.875"