FISHER SPACE PEN REFILL MEDIUM POINT | BLUE
The Fisher Space Pen Refill Medium Point is engineered to perform where standard ballpoint cartridges fail. Using a pressurized ink system operating at nearly 50 PSI, this refill delivers consistent ink flow regardless of writing angle, gravity, or environmental conditions. It is designed for professionals who require absolute reliability in the field, on duty, or in extreme environments.
The proprietary visco-elastic ink remains stable inside the cartridge until the rolling tungsten carbide ball liquifies it during writing. This prevents leaks, evaporation, and backflow while allowing the pen to write smoothly on most surfaces, including wet paper and underwater. With an extended shelf life measured in decades, this refill is built for long-term readiness.
| FEATURES |
| PRESSURIZED INK CARTRIDGE FOR CONSISTENT FLOW |
| WRITES AT ANY ANGLE, INCLUDING UPSIDE DOWN |
| FUNCTIONS UNDERWATER AND ON WET SURFACES |
| OPERATES IN EXTREME HEAT AND COLD |
| VISCO-ELASTIC INK PREVENTS LEAKING AND EVAPORATION |
| TUNGSTEN CARBIDE BALL FOR SMOOTH, DURABLE WRITING |
| SPECIFICATIONS |
|
| INK COLOR |
BLUE |
| POINT SIZE |
MEDIUM |
| OPERATING TEMPERATURE RANGE |
-50°F TO 250°F / -45°C TO 121°C |
| INK SYSTEM |
PRESSURIZED, VISCO-ELASTIC |
| BALL MATERIAL |
TUNGSTEN CARBIDE |
| SHELF LIFE |
UP TO 100 YEARS |
