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

P-16 O-ring service pack for Hirobo helicopters

This Hirobo HI2529004 pack contains five P-16 O-rings sized for general helicopter maintenance and small component sealing tasks. The set is designed 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, inspect the mating surface for dirt or damage, and fit the replacement so the ring sits flat and untwisted. Apply a light coating of silicone-safe lubricant where recommended to ease installation and extend the seal life.

These P-16 rings serve a maintenance role more than a tuning adjustment; they protect fluid seals, reduce minor vibration at mountings, and preserve correct spacing where used. Keep a small supply of these O-rings for fast field fixes and reliable service intervals.