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.

  • VersaCap 50mm (53B) Open with Molded 1/4" Barb Adapter
    Part #: FX-205-0318-RLS

    $51.00 $50.00
  • Nalgene 53B Replacement Screw Cap, case/12
    Part #: NG-712160-0530

    $157.00 $122.00
  • Nalgene Port Cap, Top Works Closure 53B, 2 ports (1/4" ID)
    Part #: NG-2135-5302

    $381.00 $295.13
  • VersaCap 50mm (53B) Closed Top Caps, case/2
    Part #: FX-205-0313-RLS

    $43.00 $38.60
  • VersaCap 50mm (53B) Open with Molded 5/16" Barb Adapter
    Part #: FX-205-0319-RLS

    $51.00 $50.00
  • Vented Top 53mm VersaCap with 0.2um PTFE Membrane
    Part #: FX-205-0345-RLS

    $54.00 $50.00
  • VersaCap 50mm (53B) Open Cap with EZ Top System Closed
    Part #: FX-205-7001-RLS

    $136.00 $121.55
  • VersaCap 50mm (53B) Open Cap with EZ Top System, 1 x 1/8" Tube
    Part #: FX-205-7003-RLS

    $208.00 $185.86
  • VersaCap 50mm (53B) Open Cap with EZ Top System, 2 x 1/4" Tube
    Part #: FX-205-7002-RLS

    $187.00 $167.26
  • VersaCap 50mm (53B) Open top w/ Closed Adapter, case/2
    Part #: FX-205-0314-RLS

    $74.00 $66.41
  • VersaCap 50mm (53B) Open with Molded 1/8" Barb Adapter
    Part #: FX-205-0317-RLS

    $51.00 $50.00
  • VersaCap Port Cap Insert 50mm (53B) Closed, Adapter
    Part #: FX-205-3331-RLS

    $27.00 $23.89