Replacement Absolute Reservoir Top Caps

Top caps for our Absolute reservoirs. Choose from polished Polycast cast acrylic or black acetal. Acetal features options for knurl or no knurl edges. 

Ports are G 1/4" non-recessed design and compatible with any fittings on the market.

Tops are 2.75" in diameter and sit flush with the Absolute reservoir tubes. Acrylic tops are 3/4" thick, acetal tops are 1/2" thick.


  • Reservoir Tube
  • Reservoir Cap (you are here)
  • Pump Top
  • Pump Bottom
  • Vortex Breaker
  • Reservoir Screw Package
  • Xylem D5 Pump
  • Mounting Method
Select Material:
Select Ports:
Select Knurl Grip: