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May 28, 2026 - 03:06 PM
The washer needs replacement when it shows permanent compression, cracking, or loses its springy feel. Inspect the washer periodically, especially following any hunt where the pinpointer took a hard drop onto rocks or concrete. If you see moisture, condensation, or corrosion inside the battery compartment, replace the washer immediately before the next wet hunt. Detectorists working saltwater beaches or muddy fields replace washers regularly as preventive maintenance. The rubber material degrades from UV exposure, temperature cycles, and saltwater contact over time, making periodic inspection important for maintaining waterproof integrity.
