YS Engine YSS1017 Back Plate O-Rings Replacement Seals for RC Engines  [YSS1017]

YS ENGINE BACK PLATE O-RING 50ST #S1017
Price:
CAD$6.77
Brand:
YS Engine
Model:
YSS1017
GTIN:
4560105739695
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Back plate service O-rings

These YS Engine YSS1017 back plate O-rings are supplied as service seals for RC-scale YS engine back plate joints. The items are intended as routine replacements for wear-prone sealing surfaces and should be treated as consumable parts during teardown and reassembly.

Installation is straightforward: remove the back plate, inspect the sealing groove for debris or damage, replace the old O-ring with a matching new ring from the pack, and reassemble, ensuring the mating faces are clean and properly seated. Apply a light amount of compatible lubricant where your engine manual recommends to ease fit and reduce the risk of tearing during installation.

Keeping fresh O-rings fitted helps preserve crankcase pressure and prevents fuel or oil leaks that can degrade running consistency.

Are these O-rings resistant to nitro fuel and engine oil?

The pack is described as nitrile rubber O-rings suitable for engine sealing; confirm compatibility with your specific fuel and oil before long term use to avoid deterioration.

Will these fit every YS engine back plate design?

These O-rings target YS engine back plate sealing surfaces, but back plate groove profiles vary between models. Verify the ring cross section and diameter against your back plate before fitting.

How can I replace them without causing damage?

Clean the groove thoroughly, use a small amount of compatible lubricant, and roll the O-ring into place rather than stretching it over sharp edges. Inspect the groove for burrs or nicks that could cut the ring.

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