if I get these caps and want to put together a blow off situation, what size food-grade tubing would I need to purchase for a tight seal?

The size that fits tightly on the cap? I would measure the nipple on the cap and buy tubing accordingly.

Will these caps hold a vacuum? Want to use it for degassing.

The fermenting lids I have are not the same as these. Mine would not hold a vacuum.

how do you syphon through the lid?

There are two holes in the lid one is for a air lock the other is for a racking cane or tube for siphoning. Both holes have caps to plug them.

Would this work for long term wine storage? (Decades)

I am not sure if this would work for decades. I have used it to condition beer after primary fermentation but for only 30 days. As long as you can keep oxygen out there shouldn’t be an issue. The major concern would be how tight the seal is with your carboy.

Carboy Caps 4 Pk Silicone Caps For Fermenting In 3

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 41.44

Duties & taxes included

In stock

Sold byAmazon LithuaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Lithuania.

Secure transaction

Description

🍷 Seal the deal on your next batch with Fermentology’s ultimate carboy caps!

UNIVERSAL FIT FOR ALL YOUR BREWS - Stretchy silicone caps fit 3, 5, and 6-gallon glass carboys seamlessly, no matter the jug style.
COMPLETE 4 PACK FOR SERIOUS HOMEBREWERS - Four lids and eight sealing caps included—perfect for scaling up your fermentation game or sharing with your brewing crew.
PREMIUM FOOD SAFE SILICONE CONSTRUCTION - Crafted from BPA- and phthalate-free silicone, these caps are safe for your brews and dishwasher-friendly for effortless cleaning.
DUAL TUBE DESIGN FOR MAXIMUM VERSATILITY - Each lid features two connection tubes compatible with airlocks, siphons, and tubing—plus handy caps to seal or open as needed.
SEAMLESS AIRTIGHT SEAL WITHOUT CORK HASSLES - Use included stopper caps to block oxygen and replace traditional corks, ensuring your ferment stays fresh and contamination-free.

Fermentology Carboy Caps are premium silicone lids designed to fit 3, 5, and 6-gallon glass fermenting jugs. Each cap features dual tube connections compatible with common brewing accessories and includes sealing caps to create airtight seals, replacing traditional corks. Made from food-safe, BPA-free silicone, these dishwasher-safe caps come in a convenient 4-pack, ideal for homebrewers crafting wine, beer, mead, kombucha, and more.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.