G230PUM Cooling Jacket O-ring 1.5x19.5 Compatible Seal K116012320 Zenoah  [K116012320]

Seal specification for G230PUM water jacket

Identified as Zenoah K116012320, this water jacket O-ring is manufactured to a 1.5x19.5 mm profile that matches the G230PUM cooling jacket interface. It is intended as the sealing element for coolant channels on compatible G230PUM RC engines.

Use this O-ring to replace seals that have lost elasticity or show visible damage and cause coolant leakage or diminished cooling efficiency. The part ships without extra packaging; confirm the K116012320 number and the 1.5x19.5 size before installation.

Preparation and fitment:

• Thoroughly clean the mating surfaces and remove any remaining sealant or debris from the groove.
• Check the groove for pits, burrs, or corrosion that might prevent full contact with the O-ring.
• Apply a small amount of the engine manufacturer's recommended lubricant to the O-ring to ease seating and avoid damage.
• Reassemble parts evenly to achieve consistent compression and conduct a low-rpm leakage test before full-power runs.