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🍾 Unlock, Seal, Repeat — The Ultimate 3-in-1 Bottle Sidekick
The Westmark Hermetus is a compact, steel and rubber 3-in-1 bottle opener, screw cap remover, and airtight sealer designed for everyday kitchen and bar use. Measuring just 8.6 x 3.7 cm, it combines durability with multifunctionality, allowing you to effortlessly open and reseal bottles while preserving carbonation and freshness. With a 4.6-star rating from over 3,800 reviews, it’s a trusted tool for professionals and enthusiasts alike.

















| ASIN | B0010AWH2I |
| Best Sellers Rank | 416,428 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 779 in Bottle Openers (Home & Kitchen) |
| Brand | Westmark |
| Brand Name | Westmark |
| Colour | Original |
| Customer Reviews | 4.6 out of 5 stars 3,809 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Finish Type | Red |
| Finish type | Red |
| Global Trade Identification Number | 04004094618376 |
| Included Components | Hermetus bottle opener/resealer |
| Is Customizable? | No |
| Item Dimensions L x W | 8.6L x 3.7W centimetres |
| Item Form | Bottle Opener |
| Item Type Name | Westmark: 'Hermetus' Bottle Cap Opener and Sealer |
| Item Weight | 0.03 Kilograms |
| Item weight | 0.03 Kilograms |
| Manufacturer | Westmark |
| Manufacturer Part Number | 61832270 |
| Material | Steel/Rubber |
| Material Type | Steel/Rubber |
| Model Number | 61832270 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product dimensions | 8.6L x 3.7W centimetres |
| Recommended Uses For Product | Opening and resealing beer bottles, everyday kitchen use |
| Special Features | 3-in-1 functionality: bottle opener, sealer, and carbonation preserver |
| UPC | 735343828492 |
| Unit Count | 1.0 count |
C**S
Very good when you don't want to drink a full bottle
Excellent for sealing part bottles. Bottle opener functions well too
G**G
My lockdown workhorse!
This little thing has been getting a lot of use throughout the various lockdowns, more than I am proud to admit! And yet you wouldn't be able to tell, it's really sturdy and well made, hasn't dented/scratched at all. It's probably the perfect size to fit in your hand, openers that are too big or too small can make cracking a cold one a difficult task and it really shouldn't be. To be honest I only really bought it because I thought the bottle resealing feature was pretty cool and I could use it to stretch out some higher ABV stouts over a few days rather than having to drink all at once. I was surprised how well this actually works and have tested on a few opened beers in the fridge which kept for a few days before noticing any real drop off in carbonation and flavour. Impressive. Haven't tested the twist-cap feature and probably never will, I'm not a fan of Bud and while I think more beer should be twist-cap I can't see that happening any time soon. Overall I imagine this will probably last me many years and I would recommend without hesistation. Plus it's great value for money. If you found this review helpful let me know by clicking the button below! Cheers
M**Y
Good value
Very nice bottle opener and it does seal the bottle well afterwards
B**N
Works well
Really nice looking and works perfectly.
C**B
Doesn't fit all bottles!
This is a well-made, functional product that does what it claims to do and feels like it will last a lifetime. I do regret my impulse purchase of two bottle stoppers without doing more in-depth research. Whilst it does a good job of resealing 330ml and 500ml bottles, it doesn't fit a number of other bottle styles that craft beer is sold in - namely the 375ml bottles used frequently by Cloudwater and Vault City (among others) and most 750ml bottles of lambic that I have tried so far. Unfortunately, this was the main reason for my purchase, so that I could spread out drinking a 750ml bottle over consecutive evenings, although my failure to research doesn't detract from what is an excellent product overall.
M**N
Adds to the drinking experience.
This is awesome! A bit hyperbolic I suppose but I've reached that age (43) where "they just don't make things like they used to", this is a quality item that simply does what it is designed to do, is well made and feels satisfying to use. Yes, I am a little bit tipsy, and yes, I have been opening more bottles than I should but only because this opener is so provocative. I probably need a hobby but I work hard at a dusty job and give me a break, I’m 43 and I do like a beer. I thought I’d stay 24 forever… Cheers!
E**E
Excellent product, love it !!
Very good quality, no bad surprises. Works exactly as needed. Very easy to use. A beer bottle still sparkling after several day using it. A bit expensive but worth the value according to me !!
M**R
Great
Love this. A neat design and the seal works!
M**L
Recommended
Excellent quality, very good quality vacuum sealer
P**S
Robust und stabil, einfache Handhabung
Zum Öffnen und Wieder-Verschließen von Flaschen mit Kronkorkenverschluss habe ich inzwischen drei der Westmark Flaschenöffner. Diese sind extrem robust, da aus Metall gefertigt. Beim Wieder-Verschließen dichtet der rote integrierte Gummi die Flaschenöffnung sauber ab; dadurch kann keine Kohlensäure entweichen und die Getränke bleiben lange genießbar. Fazit: sehr stabil und robust, einfach in der Handhabung, gute Abdeckung offener Flaschen, deshalb meine volle Empfehlung.
J**K
Great price point, great product.
Cheap, efficient, durable and easy to use. Little is wrong with this product and it will likely last you decades until it breaks. Recommended.
L**A
Westmark flasköppnare
Är nöjd! Fint kvalitet!
R**O
Fantastic opener.
Best thing since slice bread. And you know it's a good product when it's made in Germany. 🍻
Trustpilot
1 month ago
3 weeks ago