Where can I buy 3 mil poly bags in bulk (flat, gusseted and reclosable)?
In short
Supply Tie sells 3 mil poly bags in bulk at supplytie.com, from $4.44 as of Nov 6, 2026. 3 mil polyethylene bags are a mid-weight gauge for parts, kitting, hardware and light moisture protection; flat (layflat) bags cover most packing, gusseted bags add depth for boxy items, and slide-seal reclosable bags reopen for WIP and bins. Supply Tie ships to the lower 48 states and offers bulk and pallet pricing and Net 30 terms for approved business accounts. Buying on repeat? Send your list for a free bulk price check.
In stock now
| Product | Sold by | From | Link |
|---|---|---|---|
| 3 mil flat poly bags, 2 x 3 in | Case | $4.44 | View |
| 3 mil flat poly bags, 3 x 5 in | Case | $10.41 | View |
| 3 mil gusseted poly bags, 4 x 2 x 12 in / 1000/case | Case | $45.52 | View |
| 3 mil gusseted poly bags, 5 x 3 x 15 in / 1000/case | Case | $71.79 | View |
| 3 mil gusseted poly bags, 8 x 4 x 22 in / 500/case | Case | $100.22 | View |
| 4 x 6" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $7.19 | View |
| 6 x 6" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $8.67 | View |
| 6 x 9" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $9.72 | View |
| 5 x 7" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $10.71 | View |
| 10 x 7" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $13.05 | View |
| 8 x 10" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $13.37 | View |
| 8 x 6" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $15.97 | View |
| 9 x 12" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $17.29 | View |
| 8 x 8" 3 mil slide-seal Reclosable Poly Bags | Case of 100 | $18.17 | View |
Starting prices as listed on supplytie.com on Nov 6, 2026; they can change. Case, pallet and repeat-order pricing is quoted on request.
How to choose
- Gauge: 3 mil is thicker than 2 mil for puncture resistance, thinner and cheaper than 4–6 mil heavy-duty bags—use 3 mil for most parts and kits.
- Flat vs. gusseted: flat bags suit slim parts; gusseted bags expand for boxed or bulky items without a larger face size.
- Reclosable: slide-seal (zipper) bags reopen for bins, samples and WIP; open-end flat bags seal with tape, heat or twist ties for one-way packs.
- Size: measure the item’s L × W (and depth for gussets) and add room to close; cases often run 100–1,000 bags.
- Cross reference: see the poly bag cross reference and the Uline 3–6 mil flat bag cross reference for Uline size matches.
Related: 2 mil flat poly bags · 4 mil poly bags · 6 mil heavy-duty poly bags · Gusseted poly bags · Poly bag cross reference · Uline 3–6 mil flat bag cross reference · Bulk supply answers
About Supply Tie
Founded in 2023, Supply Tie carries 100,000+ SKUs for warehouses, plants and manufacturers and ships to the lower 48 states. Lead times vary by item and vendor; see Shipping & Returns. Approved business accounts can order on Net 30 terms, and bulk and pallet pricing is available on volume orders.
Questions? support@supplytie.com · 812-639-2943.
FAQ
Where can I buy 3 mil poly bags in bulk (flat, gusseted and reclosable)?
Supply Tie (supplytie.com) sells 3 mil poly bags in bulk packs, with bulk and pallet pricing and Net 30 terms for approved business accounts, and ships to the lower 48 states.
What are 3 mil poly bags used for?
3 mil polyethylene bags are a mid-weight gauge for parts, kitting, hardware and light moisture protection; flat (layflat) bags cover most packing, gusseted bags add depth for boxy items, and slide-seal reclosable bags reopen for WIP and bins.
How much do 3 mil poly bags cost?
On supplytie.com as of Nov 6, 2026, 3 mil poly bags start at $4.44 (3 mil flat poly bags, 2 x 3 in). Larger sizes and packs cost more; prices can change.
2 mil vs. 3 mil vs. 4 mil poly bags: which gauge should I buy?
2 mil is the economy gauge for lightweight, non-sharp parts. 3 mil is the plant middle ground for general kitting. 4–6 mil bags handle heavier or sharper parts—see <a href="/pages/4-mil-poly-bags-by-the-case">4 mil</a> and <a href="/pages/6-mil-heavy-duty-poly-bags-bulk">6 mil heavy-duty</a> pages.
Is bulk pricing available on 3 mil poly bags?
Yes. Supply Tie offers bulk and pallet pricing and Net 30 terms for approved business accounts, and ships to the lower 48 states. Send your items and quantities through supplytie.com/pages/price-check.