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Old 03-22-2008
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PSS Shaft Seal Question

I've had this product on several boats and never had a problem. Now, I'm experiencing something funky and can't find any info on it. The aft edge of the stainless ring is now a little rough, and after some run time there appear to be "shards" (not sure how else to describe them) sticking out all around the ring. They're not stainless, not sharp and essentially disintegrate when you wipe them off. All I can think of is that the carbon stator is starting to wear (which it's not supposed to do) and the shards and roughness are actually carbon on top of the stainless ring. We're not getting water in. Yet. I'm really focusing on this now because I just read Tania Aebi's account in CW of her problem with her shaft seal, and it sounds an awful lot like my situation (though I'm not getting water in the boat, yet).

Anyone have experience with this kind of thing? I've never heard of these seals wearing, and my understanding is that they shouldn't.
Dan Goldberg

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