---
product_id: 46152745
title: "38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12)"
brand: "ferment nation"
price: "€ 15.97"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ferment Nation"
url: https://www.desertcart.hr/products/46152745-38mm-taperseal-growler-cap-with-raised-ridges-for-easy-grip
store_origin: HR
region: Croatia
---

# 38mm tight seal Raised ridges grip Made in USA quality 38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12)

**Brand:** ferment nation
**Price:** € 15.97
**Availability:** ✅ In Stock

## Summary

> 🔒 Grip, Seal, Repeat — The Growler Cap That Means Business

## Quick Answers

- **What is this?** 38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) by ferment nation
- **How much does it cost?** € 15.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/46152745-38mm-taperseal-growler-cap-with-raised-ridges-for-easy-grip)

## Best For

- ferment nation enthusiasts

## Why This Product

- Trusted ferment nation brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Grip Mastery:** Raised ridges ensure effortless twist-off every time.
- • **Proudly Made in the USA:** Crafted with precision and quality you can trust.
- • **Unmatched Seal Security:** Conical design locks in freshness, no leaks, no worries.
- • **Perfect Fit for 38/400 Growlers:** Engineered to fit most 64oz and 1-gallon containers flawlessly.
- • **Durable Low-Density Polyethylene:** Rust-proof, reusable, and dishwasher safe for ultimate convenience.

## Overview

This pack of twelve 38mm Taperseal growler caps features a conical, rust-proof low-density polyethylene design with raised ridges for superior grip and a tight seal. Perfectly sized for 38/400 neck finish growlers and similar containers, these durable caps are dishwasher safe and proudly made in the USA, ensuring freshness and reliability for your craft brews.

## Description

The cap size is 38mm which will fit most growlers (38/400 neck finish). They can also be used for other containers requiring a tight seal, which include many 1/2 gallon and 1 gallon milk jugs.

Review: These caps are great for growlers! - I am very pleased with the way that these caps fit on my growlers. I have already went down to the local brewery once and had them filled. These caps kept the beer very fresh. Now I had read other reviews where the caps didn't work for what they put them on, so that tells me that it will not fit tightly on everything. But as for a 64oz (1.89L) growler, they are perfect.
Review: Perfect seal and reusable - Pros: These caps are superior to the traditional metal growler caps with a wax or rubber liner because they can be used multiple times without developing air leaks. Plus they are dishwasher safe so they are easy to sanitize. Cons: They only come in black. The standard white metal caps are easier to write on with a black sharpie. These require a conte crayon, paint marker, or silver sharpie to write on the black surface.

## Features

- Tough Plastic: These black caps are made of low-density polyethylene to provide excellent torque retention. Does not rust!
- Strong Seal: Conical shape draws tight and provides an excellent seal against the container.
- Easy Grip: Raised ridges span the entire circumference making the caps easier to grip.
- Quality Manufacturing: These caps are proudly made in the United States of America.
- Works best on a single track thread (38/400 neck finish). Not for GT Kombucha growlers or any jar with double threads.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B072WMDN3Z |
| Best Sellers Rank | #825,857 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #1,024 in Beer Brewing Bottles & Bottling |
| Brand | Ferment Nation |
| Color | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (131) |
| Date First Available | June 17, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.64 ounces |
| Item model number | 43235-17398 |
| Material | Plastic |
| Number of Pieces | 12 |
| Package Dimensions | 4.41 x 2.4 x 1.89 inches |
| Shape | Round |
| Style | Compact |
| UPC | 764920417804 |

## Product Details

- **Brand:** Ferment Nation
- **Color:** Black
- **Item Weight:** 0.04 Pounds
- **Material:** Plastic
- **Style:** Compact

## Images

![38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) - Image 1](https://m.media-amazon.com/images/I/71mmhdZM+1L.jpg)
![38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) - Image 2](https://m.media-amazon.com/images/I/71Qe27tD1fL.jpg)
![38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) - Image 3](https://m.media-amazon.com/images/I/71UM2LpFkLL.jpg)
![38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) - Image 4](https://m.media-amazon.com/images/I/61gZiqd+wzL.jpg)
![38mm Taperseal Growler Cap With Raised Ridges For Easy Grip (Pack of 12) - Image 5](https://m.media-amazon.com/images/I/61NLfuNiVKL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: will these fit a 16 oz boston round bottle?**
A: Thank you for your inquiry.  These caps fit a neck finish of 38-400, which is a single thread.

**Q: Dishwasher safe?**
A: The melting point of our caps is well above the average operating temperature of a household dishwasher.  However, there is the possibility that they could warp. Our manufacturer has not tested this.

**Q: Are these useful for bottle conditioning?**
A: You might want to consider a tight sealing swing-top lid like https://www.amazon.com/dp/B07PDNC3ND/ for bottle conditioning in growlers. This closure system has a very tight seal so the lid will not leak and its tightness is only slightly adjustable through loosening the adapter ring. That being said, it's really a question of the strength of the glass in the bottle that you are attempting to use for bottle conditioning; some screw-top growlers are produced using inferior glass and would not be suitable for bottle conditioning where internal pressures could cause the bottle to explode.

## Customer Reviews

### ⭐⭐⭐⭐⭐ These caps are great for growlers!
*by C***R on June 21, 2019*

I am very pleased with the way that these caps fit on my growlers. I have already went down to the local brewery once and had them filled. These caps kept the beer very fresh. Now I had read other reviews where the caps didn't work for what they put them on, so that tells me that it will not fit tightly on everything. But as for a 64oz (1.89L) growler, they are perfect.

### ⭐⭐⭐⭐⭐ Perfect seal and reusable
*by C***. on September 22, 2018*

Pros: These caps are superior to the traditional metal growler caps with a wax or rubber liner because they can be used multiple times without developing air leaks. Plus they are dishwasher safe so they are easy to sanitize. Cons: They only come in black. The standard white metal caps are easier to write on with a black sharpie. These require a conte crayon, paint marker, or silver sharpie to write on the black surface.

### ⭐⭐⭐⭐ ... not fit the GT Kombucha jars they do a good job on single track jar tops
*by S***E on January 10, 2018*

ALTHOUGH these do not fit the GT Kombucha jars they do a good job on single track jar tops. GT uses a double thread and these caps don't work well on them

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---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-23*