Supply Chain Disruptions: Some items currently have longer-than-average lead times. Please contact us for current availability.


53B Caps

53B is a specific 53mm thread finish that only fits Nalgene and Foxx style containers.

Carefully review your container's thread specification before selecting a cap even if you know that your bottle threads are 53mm across; not all 53mm caps will fit a 53mm opening, due to the differences in thread types between manufacturers.