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Thread: Silicone Sacs in ther Sheaffer Snorkel

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    Default Silicone Sacs in ther Sheaffer Snorkel

    Has any one used the silicone sacs in the Snorkel?If so, what are the thoughts on them?Are they better than the rubber sacs?

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    Senior Member Jon Szanto's Avatar
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    Default Re: Silicone Sacs in ther Sheaffer Snorkel

    I haven't, but my guess would be that they wouldn't be as effective or efficient, due to the fact that they are less pliable, and that the vacuum wouldn't compress the sac as much. As it is, Snorks don't hold a lot of ink! As stated, I haven't tried it, so it is complete conjecture. But unless there was a functional benefit, I don't know if I would do it. Most any pen I've had a silicone sac in was to preserve the celluloid, and Snorks didn't have body materials affected by off-gassing, so... ? Interesting question, though.
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    Senior Member Ron Z's Avatar
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    Default Re: Silicone Sacs in ther Sheaffer Snorkel

    The silicone sacs fill just fine. I used them for a couple of months when they first cam out, and had to quit. There are some issues that keep me from using them unless the customer specifically asks for them. One is that you must use a silicone RTV adhesive to secure the sac to the plug. Shellac won't work. Second is that they are gas permeable, so the pen must be stored nib UP, or the pen tends to ooze. Take a look at this article, written a bit after they came out....
    Last edited by Ron Z; January 1st, 2024 at 08:11 AM.

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    Default Re: Silicone Sacs in ther Sheaffer Snorkel

    Quote Originally Posted by Ron Z View Post
    The silicone sacs fill just fine. I used them for a couple of months when they first cam out, and had to quite. There are some issues that keep me from using them unless the customer specifically asks for them. One is that you must use a silicone RTV adhesive to secure the sac to the plug. Shellac won't work. Second is that they are gas permeable, so the pen must be stored nib UP, or the pen tends to ooze. Take a look at this article, written a bit after they came out....

    Okay,thanks for that information.What do you think of the Snorkel PVC sacs?

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    Senior Member Ron Z's Avatar
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    Default Re: Silicone Sacs in ther Sheaffer Snorkel

    I used to use them when I could get them from Woodbin before Martin Smith passed. David Nishimura's work, and the pen takes in ink. I haven't done extensive tests, but I'm not sure that the capacity is quite as much as it is with a latex sac, or the Woodbin PVC. Note - I used Martin's standard PVC sacs, not the super flexible that he sold for snorkels. The standards filled better.

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