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ZWO Seestar S30 Desktop
Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!
Holiday Schedule: We’ll be taking a short break from December 24th to December 29th to enjoy the holidays. During this time, the store will be closed, no orders will be shipped, and support will be unavailable. Happy Holidays!

This replacement rubber O-ring fits the Sky-Watcher 9x50 finder scopes and holds the finder securely in its mounting bracket. Over time, the original O-ring can dry out, crack, or lose elasticity. Replacing it ensures the finder remains properly seated and stable. Made from durable nitrile rubber for long-lasting use. Has an inner diameter of 52mm, and a thickness of 1.5mm.