{"product_id":"eptfe-filter-stickers-20mm-wide-mouth-jar-lids-mushroom-cultivation","title":"48Pcs EPTFE Filter Stickers 20mm for Mushroom Jar Lids","description":"\n\u003ch2\u003e48Pcs EPTFE Breathable Filter Stickers – 20mm for Wide Mouth Jar Lids\u003c\/h2\u003e\n\u003cp\u003eTake your mushroom cultivation and mycology projects to the next level with these premium \u003cstrong\u003eEPTFE synthetic filter paper stickers\u003c\/strong\u003e. Engineered with advanced expanded polytetrafluoroethylene (EPTFE) membrane technology, each 20mm disc delivers a trifecta of \u003cstrong\u003ewaterproofing, breathability, and dust protection\u003c\/strong\u003e — all in a slim, self-adhesive format that fits perfectly under wide-mouth jar lids. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy EPTFE Filter Stickers?\u003c\/h3\u003e\n\u003cp\u003eEPTFE is a next-generation waterproof and breathable material featuring a microporous network structure. Its pores are \u003cstrong\u003e0.1–1.0 μm in diameter\u003c\/strong\u003e — over 10,000 times smaller than a water droplet yet 700 times larger than water vapor molecules. This means moisture and contaminants stay out while fresh air flows freely through your jar lids, creating the ideal microclimate for successful mushroom cultivation.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproof Protection:\u003c\/strong\u003e Microscopic pores prevent water, salt, and other corrosive liquids from penetrating, protecting your substrate from unwanted moisture.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuperior Air Permeability:\u003c\/strong\u003e Allows gas exchange and heat dissipation while keeping contaminants out. Breathability is quickly restored even after contact with water or oil.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEffective Dust \u0026amp; Contaminant Barrier:\u003c\/strong\u003e Dense, uniform micropore distribution blocks dust particles and airborne contaminants to keep your grow environment clean.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Balancing:\u003c\/strong\u003e Helps equalize internal and external air pressure, protecting the integrity of your jar seals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUV Resistant \u0026amp; Chemically Inert:\u003c\/strong\u003e Withstands environmental exposure and resists chemical degradation for long-lasting performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThin, Lightweight \u0026amp; Discreet:\u003c\/strong\u003e The low-profile design makes these stickers easy to apply and barely noticeable under your jar lid.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Adhesive \u0026amp; Easy to Use:\u003c\/strong\u003e Simply peel and stick under your wide-mouth jar lid — no tools or modifications required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e EPTFE (Expanded Polytetrafluoroethylene) Synthetic Filter Membrane\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 48 pieces per sheet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Wide-mouth jar lids for mushroom cultivation, mycology, and related growing applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Sheet of 48 EPTFE Filter Stickers (20mm each)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-extended-straw-vacuum-cleaner-aquarium-water-exchanger-simple-cleaning-tool-multi-functional\"\u003e1PC Extended Straw Vacuum Cleaner Aquarium Water Exchanger Simple Cleaning Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-400cm-sealing-tape-faucet-sealing-tape-oil-free-leak-proof-water-pipe-gas-pipeline-sealing-tape\"\u003e1PC 400cm Sealing Tape – Oil-Free Leak Proof Water Pipe \u0026amp; Gas Pipeline Sealing Tape\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-10g-high-grade-silicon-grease-lubricant-o-lubrication-good-odorless-smoothness-for-o-rings-tube-silicone-grease-lubricant\"\u003e1PC 10g High Grade Silicone Grease Lubricant for O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size jar lids are these EPTFE filter stickers compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These 20mm filter stickers are designed to fit under standard wide-mouth jar lids commonly used in mushroom cultivation and mycology. They are self-adhesive and adhere easily to the underside of most wide-mouth mason or canning jar lids.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do these filter stickers allow enough air exchange for mushroom cultivation?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The EPTFE membrane features micropores that are 700 times larger than water vapor molecules, enabling excellent gas exchange and airflow. This promotes healthy CO₂ and oxygen exchange essential for mushroom mycelium development while blocking contaminants.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are the stickers reusable or single-use?\u003c\/h4\u003e\n\u003cp\u003eA: These stickers are primarily designed for single-use application. Once adhered to the inside of a jar lid, they create a secure, long-lasting seal. For best results and contamination prevention, use a fresh sticker when preparing a new cultivation jar.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these safe to use with food-grade mason jars?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. EPTFE is chemically inert and widely recognized as a safe, non-reactive material. It does not leach chemicals and is UV resistant, making it suitable for use in growing environments over extended periods.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size jar lids are these EPTFE filter stickers compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These 20mm filter stickers are designed to fit under standard wide-mouth jar lids commonly used in mushroom cultivation and mycology. They are self-adhesive and adhere easily to the underside of most wide-mouth mason or canning jar lids.\"}}, {\"@type\": \"Question\", \"name\": \"Do these filter stickers allow enough air exchange for mushroom cultivation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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It does not leach chemicals and is UV resistant, making it suitable for use in growing environments over extended periods.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"48Pcs EPTFE Filter Stickers 20mm for Mushroom Jar Lids\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/products\/eptfe-filter-stickers-20mm-wide-mouth-jar-lids-mushroom-cultivation\"}]}\u003c\/script\u003e","brand":"Nixie","offers":[{"title":"one size","offer_id":67609874890851,"sku":"1005010390408281-one size","price":8.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/2047\/6003\/files\/S68291af5aff642ab8bb1221dd8dbd3d6o_aafa09cf-f2dd-4f59-a7d7-ec3c8bf429fc.webp?v=1790791861","url":"https:\/\/nixiehaven.com\/products\/eptfe-filter-stickers-20mm-wide-mouth-jar-lids-mushroom-cultivation","provider":"Nixie","version":"1.0","type":"link"}