Clear Low Density Poly Tubing — Frequently Asked Questions
What is poly tubing?Poly tubing is a continuous, open-ended tube of clear low density polyethylene (LDPE) film supplied on a roll, so you cut it to whatever length you need and heat-seal one or both ends to create a custom-size bag. Prism Pak stocks clear LDPE tubing in 1.25, 1.5, 2, 3, 4 and 6 mil thicknesses, and every size ships on a 12-inch diameter roll with a 3-inch core that fits standard tubing dispensers. Is poly tubing food safe?Yes. All of our clear low density poly tubing is made from 100% virgin polyethylene resin and meets FDA requirements for direct food contact under 21 CFR 177.1520, so it is safe for produce, baked goods, bread, candy, dry goods such as nuts, grains and pasta, and frozen items. It is not intended for microwaving or high-temperature cooking. What thickness of poly tubing do I need?Use 1.25 to 1.5 mil for lightweight items, inner packaging and most food products; 2 mil is the most common all-purpose gauge for parts, hardware and produce; 3 and 4 mil handle heavier items and sharp edges; and 6 mil is the maximum-strength choice for construction materials and heavy or abrasive parts. Thicker film costs more per foot but resists punctures and tearing better. How do you seal poly tubing?Cut a piece from the roll allowing 2 to 4 extra inches for the seals, heat-seal one end with an impulse sealer to form the bottom, insert your product, then heat-seal the open end. For temporary or non-sealed closures you can staple, tape, or use a twist tie or bag tape instead of heat sealing. What is the difference between poly tubing and poly bags?Both are made from the same LDPE film, but poly tubing is open at both ends and cut to length on demand, so a single roll replaces many bag sizes and is ideal for long or odd-shaped products with varying dimensions. Pre-made poly bags are faster to fill for standard, repeating sizes and are available with reclosable zipper closures, which tubing does not have. What sizes does poly tubing come in?Poly tubing is specified by two dimensions: flat width and wall thickness in mils. Length is up to you, because you cut each piece from the roll. You can shop this category by thickness (1.25, 1.5, 2, 3, 4 and 6 mil) or shop clear low density poly tubing by size and width. Who uses clear poly tubing?Food producers, bakeries and produce packers use it for FDA-compliant food packaging; hardware, machining and industrial shops use it to protect fasteners, fittings, rods and pipe from dust and moisture; e-commerce fulfillment operations use it as protective inner packaging; and retailers use it for hang-sell packaging of tools, toys and accessories. It is especially popular with businesses that package many different product lengths and want to hold fewer packaging SKUs. Is poly tubing recyclable, and can it be printed?Yes to both. The film is resin identification code #4 (LDPE) and is recyclable wherever facilities accept plastic film, and one side is surface-treated to accept printing inks so it can be custom printed with your logo or branding. Service temperature range is -40°F to 180°F, and the material is RoHS and Prop 65 compliant.
How to Use Poly Tubing
- Measure: Determine the length needed for your product plus 2-4 inches for sealing
- Cut: Use scissors or a blade to cut the tubing from the roll
- Insert Product: Slide your item into the tubing
- Seal: Heat-seal with an impulse sealer, or use staples/tape for temporary closures
- Label (Optional): Apply printed labels or use pre-printed tubing
Poly Tubing Thickness Guide
| Thickness |
Best For |
Strength |
| 1.25 mil |
Lightweight items, inner packaging |
Light Duty |
| 1.5 mil |
Food products, general use |
Light-Medium |
| 2 mil |
Most common - parts, hardware, produce |
Medium Duty |
| 3 mil |
Heavier items, sharp edges |
Heavy Duty |
| 4 mil |
Industrial parts, maximum protection |
Extra Heavy |
| 6 mil |
Construction materials, sharp/heavy items |
Maximum Strength |
Common Applications for Poly Tubing
- Food Packaging: Produce, baked goods, candy, dried foods (FDA-compliant)
- Hardware & Parts: Fasteners, fittings, long items like rods or pipes
- E-commerce Fulfillment: Protective inner packaging for shipping
- Retail Display: Hang-sell packaging for tools, toys, and accessories
- Industrial Use: Dust and moisture protection for components
Technical Specifications
- Material: 100% virgin low density polyethylene (LDPE)
- Clarity: Crystal clear for product visibility
- Surface Treatment: One side treated to accept printing inks
- Roll Dimensions: 12" diameter, 3" core (fits standard tubing dispensers)
- Temperature Range: -40°F to 180°F
- Compliance: FDA 21 CFR 177.1520, RoHS, Prop 65 compliant
- Recyclability: Resin code #4 (LDPE) - recyclable where facilities accept plastic film
Ordering & Shipping
Wholesale Pricing: Save 30-40% compared to retail packaging suppliers. Volume discounts available - call for quote.
Free Shipping: Orders over $150 ship free via UPS Ground (contiguous US)
Same-Day Fulfillment: In-stock orders placed by 2PM EST ship same day
Custom Printing Available: Add your logo or branding - call for a custom print quote.
Related Products
Questions? We're Here to Help
Not sure which thickness or width you need? Our packaging experts are available Monday-Friday, 8AM-5PM EST.
Call: 1-800-867-7476
Live Chat: Available during business hours
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