Fountains and aqua-landscape facilities

The biggest problem with equipment using water — fountains, wave-making devices and other machinery — is corrosion that interferes with mechanical movements. Equipment that breaks down during the course of its movements renders the whole facility useless.
Plastic bearings never seize up due to corrosion or rust, even in water.

Recommendations

PS-S,PS-G,PT-S,PT-A
[Inner and outer ring material] – [Ball material]