Zenoah K700013040 Water Jacket O-Ring 3x40 for G231PUM,G260PUM  [K700013040]

ZENOAH WATER JACKET O-RING 3X40 G231PUM,G260PUM #700013040 (W/O PACKING)
Price:
USD$3.20
Brand:
Zenoah
Model:
K700013040
Condition:
Brand New
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Water jacket O-ring replacement

This is an RC-scale water jacket O-ring intended to restore the sealing surface of Zenoah small gas engines. The part matches the 3x40 designation shown in the product name and is supplied without additional packing.

Use this O-ring when servicing engine cooling passages on compatible Zenoah models, checking the water jacket bore and mating faces for debris before installation. Proper seating and a clean contact surface reduce the risk of leaks and make routine maintenance quicker.

Installation tips: remove old seal remnants, inspect the groove for nicks, lubricate lightly with a compatible oil to ease placement if needed, and verify the ring sits evenly around the jacket before reassembly.

Compatibility

  • G231PUM
  • G260PUM

How do I check fit before full reassembly?

Place the O-ring on the water jacket groove, rotate the jacket by hand to confirm even seating, and inspect for gaps or pinching before final assembly.

How often should this O-ring be replaced?

Replace the O-ring whenever you observe hardening, cracks, or persistent leaks after reassembly, or during scheduled engine maintenance.

Any precautions during installation?

Clean mating surfaces thoroughly, avoid over-stretching the O-ring, and ensure no debris remains in the cooling passages before starting the engine.

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