These centrifuge tubes from Corning are supplied with screw caps. The cap with glued-in white-rubber liner resists effects of temperature and steam. 15 mL and 50 mL tubes are available.
Specification
Material: borosilicate glass Sterility: non-sterile O.D. × L: 17 mm × 134 mm Cap diam.: 15 mm Cap thread: 15-415 Capacity: 15 mL Color: clear