---
product_id: 442823889
title: "Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9)"
brand: "biomed solutions"
price: "$42"
currency: NZD
in_stock: true
reviews_count: 8
category: "Biomed Solutions"
url: https://www.desertcart.nz/products/442823889-biomed-solutions-mushroom-grow-bag-cap-and-ring-for-cultivating
store_origin: NZ
region: New Zealand
---

# Withstands 130℃ sterilization Cotton filter for breathable contamination control Polypropylene durable sealing ring Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9)

**Brand:** biomed solutions
**Price:** $42
**Availability:** ✅ In Stock

## Summary

> 🍄 Seal the deal on flawless fungi growth!

## Quick Answers

- **What is this?** Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) by biomed solutions
- **How much does it cost?** $42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/442823889-biomed-solutions-mushroom-grow-bag-cap-and-ring-for-cultivating)

## Best For

- biomed solutions enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Convenient Pack:** Includes 9 precision-sized 40mm caps and rings, perfectly tailored for professional and hobbyist cultivators alike.
- • **Trusted by Cultivation Pros:** Highly rated with a 4.6-star average, this accessory is a must-have for anyone serious about clean, efficient mushroom farming.
- • **Effortless Sealing Innovation:** Say goodbye to traditional cotton plugs—our snap-fit cap and ring system streamlines mushroom bag sealing, saving you time and labor.
- • **Sterilization-Ready Durability:** Engineered to endure high-pressure autoclave sterilization up to 130℃, ensuring contamination-free cultivation every cycle.
- • **Breathable Contamination Barrier:** Integrated cotton filter cover allows optimal gas exchange while blocking contaminants, promoting healthier, faster mushroom growth.

## Overview

Biomed Solutions Mushroom Grow Bag Cap and Ring set features a high-temp resistant polypropylene design with a breathable cotton filter, enabling sterile, efficient sealing of mushroom cultivation bags. Each pack contains nine 40mm caps and rings, optimized for autoclave sterilization up to 130℃, making it an essential tool for contamination-free mushroom farming.

## Description

The ring cap is widely used for sealing the mushroom bag in the process of edible fungus production, eliminating the traditional method of sealing with cotton plugs, easy to use and save labor, the seed cover is made of polypropylene material, which can be used under high temperature and pressure, and can withstand up to 130℃ high temperature

Review: They're good - You can reinforce the filter with another layer of porous tape + loosely placed aluminum foil (for breathing), but they do the job of keeping the contaminants out while providing safe and easy access for inoculation.
Review: Auto clave compatible - The sleeves work really well. Some people have said they don't secure well at all but I don't think they are actually clicking the 2 pieces closed. They are very difficult to pry apart once you close them. Only downside is the cheap foam filter on top. I added some micropore tape on top of the filter and it works fine.

## Features

- Mushroom cultivation auxiliary material ring for growing mushroom
- Polypropylene cap and ring with cotton filter
- Diameter:40mm
- High temperature resistance,can withstand 130℃ high temperature in press cooker sterilization

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2PCYNJD |
| Best Sellers Rank | #595,368 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #925 in Hedge & Shrub Plants & Seeds |
| Brand | Biomed Solutions |
| Customer Reviews | 4.6 4.6 out of 5 stars (31) |
| Indoor/Outdoor Usage | Indoor |
| Item Weight | 0.16 ounces |
| Manufacturer | Biomed Scientific |
| Material Feature | Mushroom |
| Number of Items | 9 |
| Number of Pieces | 9 |
| Package Dimensions | 7.32 x 7.05 x 1.38 inches |
| Unit Count | 9.0 Count |

## Product Details

- **Brand:** Biomed Solutions
- **Indoor/Outdoor Usage:** Indoor
- **Item Weight:** 0.01 Pounds
- **Material Feature:** Mushroom
- **Number of Items:** 9
- **Number of Pieces:** 9
- **Unit Count:** 9.0 Count

## Images

![Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) - Image 1](https://m.media-amazon.com/images/I/41Tk+IH6FeL.jpg)
![Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) - Image 2](https://m.media-amazon.com/images/I/510lXoFPTmL.jpg)
![Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) - Image 3](https://m.media-amazon.com/images/I/519izgbyO0L.jpg)
![Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) - Image 4](https://m.media-amazon.com/images/I/51WYMA+w1pL.jpg)
![Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9) - Image 5](https://m.media-amazon.com/images/I/61QtwX85KEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ They're good
*by S***F on December 18, 2025*

You can reinforce the filter with another layer of porous tape + loosely placed aluminum foil (for breathing), but they do the job of keeping the contaminants out while providing safe and easy access for inoculation.

### ⭐⭐⭐⭐⭐ Auto clave compatible
*by T***D on June 25, 2023*

The sleeves work really well. Some people have said they don't secure well at all but I don't think they are actually clicking the 2 pieces closed. They are very difficult to pry apart once you close them. Only downside is the cheap foam filter on top. I added some micropore tape on top of the filter and it works fine.

### ⭐⭐⭐ Not what I expected
*by S***H on January 8, 2023*

I wasn't really impressed with the quality of this product. I'm fairly new to mushroom cultivation so I was really excited to try these rings out but when I got them they were subpar in my opinion. They are super small and flimsy I'm not even sure what the filter is made out of and there were no instructions whatsoever. Save your money for some better options that are out there.

## Frequently Bought Together

- Biomed Solutions Mushroom Grow Bag Cap and Ring for Cultivating Sealing Cotton Filter Cover 40mm(Pack of 9)
- TonGass 60-Pack Autoclavable Mushroom Growing Bag Bulk with Microporous Filter Patchs - Large 8"x5"x20" Extra Thick 80 Micron (=3 Mil)| Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags
- 3M Micropore Tape 1530-1 (2 rolls) 1 x 10 yards

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-15*