National Kees Walking Sprinkler A5 B3 Lower Impeller Shaft Bushing. Replaces part S1160, S1130, and S1140. This is a 3D printed part, no longer available from National Sprinkler. Made from Nylon 12. These are designed and manufactured here in the United States!

Now designed with an internal o-ring. Comes with two Buna-N/Nitrile o-rings and pre-lubricated with silicone o-ring lubricant.

For most sprinklers with a lower bushing retaining screw: There is no hole in the bushing for the retainer screw, just drill once it’s seated in tractor body.

For a few sprinklers (Some B3 Nationals) without the lower bushing retaining screw: Clean the inside lower bushing collar of the sprinkler body well, and use a 100% silicone adhesive. B-7000 or similar. Made sure to allow it to dry for at least 24 hours.

Condition is "New". Shipped with USPS First Class.

Cork gasket available here: 174798556640

Installation Video: https://youtu.be/Jw0oDomJ4cU

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