Zenoah K700013042 3x42 Spare O-Ring G290PUM for RC  [K700013042]

3x42 o-ring durability and fit

This Zenoah K700013042 O-ring is offered as an aftermarket sealing part for RC assemblies, intended to support routine service and component maintenance. The product ships as a single 3x42 rubber ring to replace worn seals in applications specifying that size.

Careful installation will extend service life: inspect grooves and mating faces for nicks or foreign material, seat the o-ring flat without twisting, and ensure even compression at reassembly. The component is a passive sealing element and will not modify engine tuning aside from stopping leaks.

Longevity tips: keep the o-ring away from aggressive solvents and extended sunlight, store flat at normal room temperature, and discard any ring that shows permanent deformation or cracking. Check the part reference to confirm a 3x42 fit.