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 4140-00-177-8858
NSN 5925-00-186-8669
NSN 6645-01-598-3976
NSN 5999-01-175-6767
NSN 5905-00-153-2134
NSN 4140-00-184-4812
NSN 6150-01-530-1062
NSN 5855-01-054-5243
NSN 6320-01-397-9995
NSN 6150-01-010-3400
NSN 6240-00-146-9322
NSN 7035-01-045-7202