Zenoah K700013042 O-RING 3X42 G290PUM spare o-ring replacement  [K700013042]

O-ring 3x42 spare part

This Zenoah K700013042 O-ring is an RC-scale replacement sealing part designed for routine maintenance and component repair. The unit is presented as an individual sealing ring intended to restore or maintain seals in small RC assemblies where a 3x42 sized o-ring is specified.

Installation is straightforward for hobby technicians: inspect the mating surfaces for wear or debris, seat the o-ring into its groove without twisting, and verify a smooth, even compression when reassembling the components. The part functions as a basic sealing element and does not alter tuning or performance beyond restoring proper sealing.

Handling and storage notes: keep the o-ring away from solvents and prolonged UV exposure, store flat at ambient temperature, and replace any o-ring that shows cracking or permanent deformation. For fitment confirmation, refer to the component or assembly reference that lists a 3x42 o-ring.