This small, complete maintenance kit is for the MSR Waterworks II or Miniworks filters.
- Small enough to take into the field on long or short trips; contents are packaged into round plastic (3.5" diameter) jar with twist-on lid
- Contains all maintenance parts: Filter Housing O-Ring, Piston O-Ring, Inlet Foam, Inlet Valve Ball, Outlet Cap, Silicone Lubricant (0.125 oz.)