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Thread: New group head seal, compound or silicone?

  1. #1
    Senior Member Yelta's Avatar
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    New group head seal, compound or silicone?

    Time for a new seal in the Bezerra, the current compound seal is only about 6 months old and has started to degrade already.

    I'm wondering if there is any advantage to silicone, or, am I better off staying with the compound type?

  2. #2
    Senior Member flynnaus's Avatar
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    From my experience, silicon gaskets last longer. I've had the same one in for a couple of years and just now looks like it needs a change (getting a bit hard).
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  3. #3
    Senior Member Yelta's Avatar
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    Thanks Flynn, will chase up a couple.

  4. #4
    Mal Dimal's Avatar
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    In my experience, as well as lasting longer they also seal with less force required...

    Mal.

  5. #5
    Senior Member Yelta's Avatar
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    Thanks for the input Mal.

    Used the Coffee Snobs quote feature this AM, within minutes Antony from Casa Espresso responded with a very helpful reply including his phone number.

    Have ordered a couple from him, one as a spare.

    Great service, very impressed.
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  6. #6
    Senior Member Yelta's Avatar
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    Great success, Antony sent a couple of 8.5 mm silicone seals, they arrived this morning.

    The old seal was allowing the PF to lock in at approx 5.30, new slightly thicker seal locks in at approx 6.30 with minimal pressure.

    Thanks Antony and Casa Espresso for your knowledge and service.

    PS if only all maintenance jobs were this simple.
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  7. #7
    Mal Dimal's Avatar
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    After using the Silicone Gasket, you'll never want to go back to the plain old rubber ones...

    Good stuff mate.

    Mal.

  8. #8
    Senior Member Yelta's Avatar
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    Quote Originally Posted by Dimal View Post
    After using the Silicone Gasket, you'll never want to go back to the plain old rubber ones...

    Good stuff mate.

    Mal.
    Right again Mal.

    The Bezzera PF never needed much pressure to lock in, with the silicone seal even less, I'm impressed.

    Never too old to learn.
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  9. #9
    Senior Member artman's Avatar
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    As above, with silicone seal prices not much more than the rubber, why would
    You buy rubber. I am now using the same seal from a few years back on a second E61 group machine and still easy to pop out and seals perfectly with little effort.

    They also come in 8.0mm (or is it 9.0) thickness so you can "adjust" where you want the handle to sit for different groups/PFs/baskets.

    Great invention, just like the stainless, easy to clean IMS shower screen. Should last a lifetime in domestic use.

    Cheers
    Dimal likes this.

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