PSS Shaft Seal Maintenance & Parts Replacement Kit. FOR 1 3/4" SHAFT 2 1/2" TUBE. As with any rubber hose below waterline, the PSS bellows must be inspected. on a regular basis for any sign of wear, aging or chemical deterioration. The PSS bellow should be replaced in six year intervals. During bellows. replacement it is recommended the o-rings & set screws in the stainless. steel rotor also be replaced. Bellows may need to be more frequently inspected in an environment where. non-sealed batteries emit sulfuric acid. Sulfuric acid vapor will accelerate. rubber deterioration, as will an ozonater. The Maintenance Kit includes the items you need to properly maintain your. PSS Shaft Seal. Included in the kit is one (1) PSS bellow, two (2) O-rings,. five (5) set screws, four (4) new hose clamps and an allen key.
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