If you service your models regularly, having spare O-rings is a simple way to avoid downtime. This XRAY #970090 pack contains 10 rubber O-rings sized 9x1.8mm that seat over 9mm shafts to form a tight sealing surface and help prevent fluid seepage or dust ingress.
These O-rings are handy for suspension tweaks, shaft seals and small retention roles across many RC builds. Their flexibility makes them a go-to consumable for everyday workshop adjustments and modest upgrades where a compact seal is required.
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