Consists of th following nonsupply items and quantities 4; n91605a cap 1; n91731a gasket 2; n91792a retainer 1; glass 0.125 in. Thk; 1.125 in. Diameter pyrex 100450 1; 1.500 in. O/a od; 0.865 in. O/a h; thd internal opposite glass end 1.000 in. 11-1/2 npt