AgilentCold cap female coupling, 1/2 inch OD tube x 3/8 inch FPT, Imperial Flexfitting No. 66-FL, for HS-16, HS-20, HS-32, NHS-35 diffusion pumpsSKU · 622445026
AgilentCold cap gasket kit, for HS-16, HS-20, HS-32, NHS-35 cold cap, 1 package of 4 piecesSKU · L8839301