As differentiated by wall thickness and length
A tubular item of glass having a uniform cross section throughout its entire length. It may have reference and/or indicator markings and is generally used where the conveying, containing, or visual inspection of liquids and/or gasses are required, such as laboratories. Excludes insulator (1), washer; and washer (as modified).
Classification: Tubes of fused quartz or other fused silica, unworked
NSN 5985-01-501-5908
NSN 6610-00-948-3003
NSN 6645-01-167-0712
NSN 5925-00-741-1479
NSN 5915-01-152-2625
NSN 5960-01-567-1096
NSN 5950-00-099-9612
NSN 6135-01-633-8502
NSN 6145-01-379-9416
NSN 6645-00-350-8070
NSN 5930-01-467-8981
NSN 5895-01-449-0447