4 mil ziplock bags are .004" thick reclosable poly bags, twice as thick as 2 mil, built for heavier or sharper items such as hardware, medical supplies and bulky food. Elements Supply sells wholesale 4 mil ziplock bags in food-safe LDPE, in case quantities that ship the same business day from our Bell, CA warehouse when ordered before 2 PM Pacific.
About 4 Mil Ziplock (Reclosable) Bags
These bags are extra-strong and durable, engineered for heavy-duty storage. Here’s what makes them stand out:
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Heavy-Duty Protection: 4 Mil thickness for extra strength and puncture resistance.
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Durable Zip Closure: Reclosable zipper provides a secure, reusable seal.
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Food-Safe LDPE: Made from 100% virgin raw materials for clarity and meets FDA/USDA compliance.
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Dust & Dirt Barrier: Keeps items clean and protected from dust and dirt.
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Tested for Quality: Meets ASTM D1709-02 puncture resistance and ASTM D882-02 load-bearing standards.
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True Usable Space: Dimensions are listed below the zipper for accuracy.
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Reusable & Recyclable: Eco-friendly design supports multiple uses.
Please note: These are not Ziploc® brand bags.
4 Mil Ziplock Bag FAQ
When should I choose 4 mil instead of 2 mil ziplock bags?
Choose 4 mil (.004") for heavier, bulkier or sharper items such as hardware, tools, medical supplies, frozen goods and bulk food. 2 mil (.002") is enough for lighter food, retail and general packaging.
Are 4 mil ziplock bags food safe?
Yes. They are made from 100% virgin LDPE resin that is FDA and USDA approved for food contact.
Are they leakproof or airtight?
No. The zipper reseals and keeps out dust and dirt, but these bags are not leakproof, waterproof or airtight.
How are sizes measured?
Sizes are interior width x length, measured below the zipper.
Manufacturing Reclosable, Ziplock Bags, Zipper Bags
All of our reclosable, zip lock/ziplock/zip locking (“zipper bags”) plastic bags are engineered and manufactured with the best industry standards in manufacturing processes, properties, and usability. We have partnered with the industry's leading manufacturers to ensure our bags provide greater quality and consistency compared to traditional flat poly bags on the market. Each bag begins with using 100% virgin Low Density Polyethylene (LDPE) resin to ensure food grade quality and certification. All of our flat poly bags are tested for puncture resistance and load bearing qualities. Our bags are rigorously tested to meet ASTM D1709-02 puncture resistance and ASTM D882-02 load-bearing standards. These ensure that our bags can hold up to your specific applications compared to other bags on the market.
Size to Volume Conversion:
Finding the right size is easy with this quick reference:
- 6”x 4” – Snack Size
- 6”x 6” – Sandwich Size
- 6”x 8” – Pint Size
- 7”x 8” – Quart Size
- 10”x 12” – 1 Gallon Size
- 13”x 15” – 2 Gallon Size
From small snacks to larger items, there’s a size that’s perfect for your needs.
For applications where standard bags simply aren’t enough, 4 Mil Ziplock Bags provide the durability and peace of mind you need. With their heavy-duty construction, FDA-approved food safety, and reusable zipper seal, these bags are built to protect your products from dust and dirt.
At Elements Supply, we stock a wide variety of ziplock bags in multiple thicknesses and sizes to fit every application. Explore our collection and discover how the right packaging can make all the difference.
