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Description
xOverview
Introducing Boao’s 24-pack of 38mm poly seal screw caps. Crafted from durable low-density polyethylene, these caps are reusable and resistant to rust, making them a practical choice for glass bottles, growlers, and jugs. Before you order, please confirm that your bottle mouth is 38mm to ensure a proper fit.
Why these caps stand out
Each cap features a cone insert that forms a tight closure when tightened. This design helps minimize liquid leaks and gas escape, supporting carbonation retention and stable storage for your contents.
- Durable, rust-free LDPE material designed for repeated use.
- Tight sealing action with a cone-insert closure for better airtightness.
- Easy to seal thanks to a raised ridge around the circumference for a confident grip.
- Versatile fit for 38 mm bottle mouths and compatible with many 1/2 to 1 gallon glass jugs.
What you’ll get
Pack includes 24 poly seal screw caps, with quantities available to keep spares on hand for quick replacements and everyday sealing needs.
Practical uses
Ideal for bottling beverages, infusing flavors, or storing liquids. These caps suit home brewers, small-scale producers, and anyone seeking a reliable, reusable closure for glass containers.
- Home brewing and beverage bottling
- Replacement caps for 38 mm wide jars and growlers
- Reusable solution for short-term storage and transport
- Air-tight seals to help maintain carbonation and freshness
How to choose the right cap
Measure your bottle mouth to confirm a 38 mm diameter. This ensures a proper seal and fit. If you’re unsure, compare with existing caps or reach out to support for guidance.
FAQ
Q: What size are these caps and what bottles do they fit?
A: The caps are 38mm in diameter and fit most 1/2 to 1 gallon glass jugs and growlers with matching mouths.
Q: Are these caps reusable and do they prevent leaks?
A: Yes. The LDPE caps are designed for repeated use and feature a sealing cone to help minimize leaks and maintain closure integrity.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.