Hirobo HI2529004 O-ring P-16 replacement set 5 pcs  [HI2529004]

O-ring P-16 replacement for helicopters

This Hirobo HI2529004 pack contains five P-16 O-rings sized for general helicopter maintenance and small component sealing tasks. The set is intended as a direct spare for routine upkeep of Hirobo helicopter assemblies and other small RC components listed under general parts.

Fit and installation are straightforward: remove the worn O-ring from its seat, check the mating surface for debris or damage, and install the replacement ensuring the ring sits flush without twisting. Lightly lubricate compatible silicone-safe grease if the assembly calls for it to ease seating and extend service life.

In tuning and setup, O-rings play a maintenance role rather than a performance adjustment; they preserve fluid seals, damp vibration at mounting points, and maintain correct spacing where used. Keep a small stock of these P-16 rings for quick field repairs and predictable service intervals.