I preferred the old PSS/PYI seals without the vent since it made one less complication during install. It added user responsibility...
The guy at the sailboat show didn't indicate that the last-drop seals were more or less for power or sail. I assume that both companies will provide critical dimensions for the user to make measurements prior to purchasing. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sat, Oct 20, 2018, 5:12 PM Bill Coleman via CnC-List < cnc-list@cnc-list.com> wrote: > I wonder if they were the older, original style that didn't have the water > vent tube. I believe you are supposed to 'Burp' the seal upon launch, to > get > the air out. I have never done this, and never had any problem. I would > think you would have to really be spinning the shaft pretty fast to > overheat > one of those to get them to crack and fail. I wonder if there were other > things at play to have caused that. > Just looked at the Lasdrop Shaft seals, and they look intriguing. There > are > 3 styles, and they look to be geared toward power boats. I wonder which > one > is recommended for sailboats. > > Bill Coleman > C&C 39 Erie, PA > > > -----Original Message----- > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Steve > Thomas via CnC-List > Sent: Saturday, October 20, 2018 7:41 AM > To: cnc-list@cnc-list.com > Cc: Steve Thomas > Subject: Re: Stus-List C&C 33-2: PYI shaft seal > > I don't know if this is brand-specific, or which brands were involved, but > while I had my boat hauled out and was in the process of making a decision > on what to do about the packing gland on my boat, 2 boats in the same > marina > had serious leaks due to broken graphite parts in their dripless packings. > One of them sank and the other managed to get hauled out in time. I did not > know that such a catastrophic and sudden failure mode even existed up til > then. No vendor or manufacturer's literature that I had seen even mentioned > such a possibility. How such an event could be handled at sea I did not > know. Anyway, it freaked me out and I decided to install a new conventional > packing gland instead. > > Steve Thomas > C&C27 MKIII - Ontario > C&C36 - Florida > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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