Plymor 9 in x 12 in 4 Mil Heavy Duty Zipper Bags (Case of 500)

In this review the Plymor 9 in x 12 in 4 Mil Heavy Duty Zipper Bags are evaluated for workshop, shipping and storage use; the bottom line is they suit anyone who needs sturdy resealable protection for bulky or sharp items. The reviewer found the bags' standout quality to be the 4 mil heavy-duty LDPE construction that resists punctures and tears while still remaining flexible, and the case count of 500 (in five packs of 100) makes them practical for repeated use or for stocking a small shop. This review focuses on real-world handling, durability, and everyday convenience.

Key Features

• Bag size: The 9 in x 12 in dimension (measured below the zipper) fits a wide range of parts and keeps contents compact and visible for quick identification.
• Material: The 4 mil (.004 in) heavy-duty polyethylene provides extra puncture and tear resistance for heavier or sharper items compared with thinner film.
• Quantity packaging: Supplied as a case of 500 in five convenient packs of 100, the bundle is useful for managing inventory and reducing the need to reorder frequently.
• Resealable zipper: The reclosable seal allows repeated use, helping protect items during transport and enabling organized storage over time.
• Food storage compliant: Made from FDA-compliant LDPE, the bags are safe for food contact if needed, adding versatility beyond industrial uses.
• Brand guarantee: The product includes a satisfaction guarantee which offers reassurance for bulk purchases.

Who It's For

The Plymor 9 in x 12 in 4 mil zipper bags are best for small shops, maintenance departments, crafters, or homeowners who need a robust, resealable bag for hardware, tools, small machinery parts, or bulk food storage. The heavier film and larger case quantity make them a practical choice for anyone who handles pointed or heavy items and wants fewer failures from punctures or tears.

Those who should look elsewhere include buyers who need ultra-clear archival-quality bags, tamper-evident security pouches, or waterproof vacuum-seal performance-this product focuses on general heavy-duty protection and resealability rather than specialty sealing technology.

Pros & Cons

Pros

• Durable 4 mil LDPE resists punctures and handles bulky or sharp items better than thin film bags.
• Large case quantity of 500 in five packs of 100 simplifies stocking and reduces frequent reorders.
• Resealable zipper enables repeated use and convenient access for projects or shipping.
• FDA food storage compliant adds versatility for light food use as well as industrial storage.

Cons

• At 4 mil the bags are thicker and less crystal-clear than thin poly film, so they are not ideal where maximum clarity or display is required.
• These are general-purpose zipper bags and do not provide specialized tamper-evident or vacuum-seal protection.

Specifications

Brand	Plymor
Bag size	9 in x 12 in (below zipper) / 228mm x 304mm
Material	4 mil (.004 in) LDPE heavy-duty polyethylene
Quantity	500 bags (5 packs of 100)
Compliance	FDA food storage compliant
Seal type	Resealable zipper

Our Verdict

The Plymor 9 in x 12 in 4 mil zipper bags deliver dependable protection for hardware, parts, and repeat-use storage at a sensible bulk price. They are especially good value for workshops, maintenance teams, and crafters who need thicker film and a large case quantity. For users seeking specialty sealing or razor-clear display packaging, a different product may be preferable, but for general heavy-duty resealable storage these bags are a practical buy.

Frequently Asked Questions

Are these bags suitable for food storage?
Yes, the bags are made from FDA food storage compliant LDPE and can be used for light food storage.

How many bags come in each pack?
The case contains 500 bags divided into five convenient packs of 100 each.

Will the bags resist punctures from sharp metal parts?
The 4 mil heavy-duty construction offers improved puncture resistance compared with thinner bags, making them suitable for many bulky or sharp items, though extremely sharp edges may still penetrate any film.