PSS Shaft Seal 1-¾" Shaft 3-¼" TubeShaft Diameter: 1-¾"Stern Tube Diameter (D): 3-¼" to 3-⅜"Total Length (A): 9.175"Total Length (compressed) (Compressed A): 8.175"Rotor Diameter (B): 3.75"Carbon Cuff Diameter (C): 3.25"Stern Cuff Length (E): 2"The PSS Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders / yards. The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market. Certified by Bureau Veritas, ABS & Rina: Boat builders / yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment & cost associated with traditional packing type glands. Aside from these benefits, the PSS Shaft Seal helps to eliminate water
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