Silicone Vented Bungs

Discussion in 'General Wine Making Forum' started by jumby, May 3, 2019.

Wine Making Forum

Help Support Winemaking Talk by donating:

  1. May 10, 2019 #21

    CDrew

    CDrew

    CDrew

    Senior Member

    Joined:
    Feb 15, 2018
    Messages:
    188
    Likes Received:
    206
    Gender:
    Male
    Just me, but I really do not like the ones you show in your picture. Even traditional rubber air lock bungs can be problematic. Real silicone, seems to conform and seal best. Their only drawback is that they are slippery when wet.

    These work well with air locks:
    https://www.beveragefactory.com/hom...in-table-size-7-silicone-drilled-stopper.html
     
  2. May 10, 2019 #22

    kuziwk

    kuziwk

    kuziwk

    Senior Member

    Joined:
    Dec 12, 2017
    Messages:
    234
    Likes Received:
    25
    Gender:
    Male
    That's what she said ;), i just placed an order for two vented bungs from vin table to try them. I'm typically using the standard hard ones I posted but generally only for 3-6 months. The vented ones are for the carboys going longer than that. I Will be testing for Sulphites pretty soon here...just waiting for my chemicals to arrive, so I can conduct my own tests. I don't think a little bit of oxygen is a bad thing as it builds structure in the wine, it's beneficial in barrel aging and is really the only difference to what we do in air tight glass compared to what commerical wineries do. So perhaps the added oxygen with the new bungs/air lock, some added tannin complex and oak cubes will be a good alternative to barrel aging. The only problem is we than need to make sure sulphite levels are adequate. From what I understand this is a major problem with oak barrels anyways forcing us to do testing.
     
    Last edited: May 10, 2019
  3. May 11, 2019 #23

    vacuumpumpman

    vacuumpumpman

    vacuumpumpman

    Vendor Sponsor

    Joined:
    Aug 25, 2011
    Messages:
    3,958
    Likes Received:
    954
    I got ahold of Daniel and got a link for what you were looking for =

    https://techniquesinhomewinemaking.com/attachments/File/Coravin Performance Study Paper v0.1.pdf

    I hope this helps -
     
    cmason1957 likes this.
  4. May 12, 2019 #24

    sour_grapes

    sour_grapes

    sour_grapes

    Victim of the Invasion of the Avatar Snatchers

    Joined:
    Sep 19, 2013
    Messages:
    9,203
    Likes Received:
    6,681
    stickman likes this.
  5. May 15, 2019 at 4:55 AM #25

    vacuumpumpman

    vacuumpumpman

    vacuumpumpman

    Vendor Sponsor

    Joined:
    Aug 25, 2011
    Messages:
    3,958
    Likes Received:
    954

    Here I copied and pasted it off of facebook =
    Daniel Pambianchi
    April 17 at 9:04 AM
    After a 9-month watch period, I now have conclusive evidence that "grab ring" type bungs (TOP picture) allow much more oxygen into carboys than the common silicone bungs. Now, I'm suspecting the new-type, hard-silicone bungs (BOTTOM picture) may have the same issue.

    My informal study looked at free SO2 consumption and oxygen levels at 3-month intervals for the same wine in the same type of carboy but with different bung types. Carboys with the older type of silicone performed as expected, i.e. little free SO2 consumption, low O2 levels.

    P.S. Yes, I know, the bungs are not inserted fully. I am in the process of sampling and analyzing the wines.

    [​IMG]
    [​IMG]
     
  6. May 15, 2019 at 5:58 AM #26

    kuziwk

    kuziwk

    kuziwk

    Senior Member

    Joined:
    Dec 12, 2017
    Messages:
    234
    Likes Received:
    25
    Gender:
    Male

    So which bungs would have the grab ring or be considered the hard silicone?

    It's these ones?
     

    Attached Files:

  7. May 15, 2019 at 12:36 PM #27

    cmason1957

    cmason1957

    cmason1957

    CRS Sufferer WMT Supporter

    Joined:
    Aug 5, 2011
    Messages:
    2,699
    Likes Received:
    1,755
    No, those are the ones considered soft.
     
  8. May 15, 2019 at 12:57 PM #28

    Johnd

    Johnd

    Johnd

    Large Member WMT Supporter

    Joined:
    Jun 11, 2015
    Messages:
    4,895
    Likes Received:
    4,363
    Location:
    S Louisiana
    I read that whole post on FB and it’s confusing. The ones you just called “soft” are (to me) the “old kind” and are way harder than the white vented bungs I use, they lose much pliability in my chilled cellar environment and seal poorly. The white, soft ones seal way better in my carboys and barrels and maintain their pliability even at lower temps.

    In any case, and with no disrespect to the study, the soft, white, pliable ones remain my choice, I’ve never had any kind of issue using them with short or long term storage in carboys or barrels.
     
  9. May 15, 2019 at 1:54 PM #29

    SethF

    SethF

    SethF

    Member

    Joined:
    Oct 22, 2018
    Messages:
    78
    Likes Received:
    21
    John- Can you please provide a link to the ones you prefer?
     
  10. May 15, 2019 at 3:12 PM #30

    stickman

    stickman

    stickman

    Veteran Winemaker

    Joined:
    Jun 16, 2014
    Messages:
    1,058
    Likes Received:
    799
    I was also a little confused which is why I was looking for more information. He refers to all of the tested bungs as being silicone, yet many bungs on the market are not silicone, not sure if he is just using the term loosely, or if he verified that the bungs tested are silicone. The one in his top photo looks like this silicone carboy bung from Morewine https://morewinemaking.com/products/silicone-bung-solid-carboy.html

    I am also currently using silicone bungs on my two demijohns and haven't noticed any issues, though I'm not confident that means much from a technical viewpoint. I guess if the wine still tastes good there's no need to worry. I have noticed that many wineries are still using silicone bungs on their barrels, though I have seen some using glass bungs.

    It is well known that silicone is one of the most gas permeable elastomers on the market, I assume that's why he is conducting the test. There is an old study from Betterbottle that indicated silicone bungs were more permeable than the standard rubber bungs. http://www.better-bottle.com/pdf/ClosuresOxygenPassageStudy.pdf
     
  11. May 15, 2019 at 3:32 PM #31

    kuziwk

    kuziwk

    kuziwk

    Senior Member

    Joined:
    Dec 12, 2017
    Messages:
    234
    Likes Received:
    25
    Gender:
    Male
    I'm welcoming the so2 to leak out and let a bit of oxygen in, I accidentally added double the SO2 in two kits. If I leave it until Christmas or maybe longer with the leaky bungs I'm sure it will be fine.

    So we are assuming silicone bungs are more permeable? What about the vented silicone bungs from morewine/ vintable?
     
  12. May 15, 2019 at 10:59 PM #32

    Johnd

    Johnd

    Johnd

    Large Member WMT Supporter

    Joined:
    Jun 11, 2015
    Messages:
    4,895
    Likes Received:
    4,363
    Location:
    S Louisiana
    jumby likes this.
  13. May 16, 2019 at 12:13 PM #33

    jsbeckton

    jsbeckton

    jsbeckton

    Senior Member

    Joined:
    May 23, 2016
    Messages:
    253
    Likes Received:
    72
    Love these. This was a good reminder so I just ordered 5 more!
     
  14. May 19, 2019 at 8:08 PM #34

    skyfire322

    skyfire322

    skyfire322

    Junior Member

    Joined:
    May 21, 2017
    Messages:
    292
    Likes Received:
    172
    I ended up getting three of these. So much better than using an airlock! I store my carboys in a cooler bag for bulk-aging and the airlock would keep falling off because it was just a bit too tall. I placed a strip of electrical tape over the top of it just to make sure it doesn't pop off and haven't ran into any issues since!
     
    jumby and Johnd like this.

Share This Page