As per our Shipping and Returns Policy, custom cuts and fabricated parts are non-returnable. If you need an over- or undersized item, note it under \"Comments\" during Checkout. Cut-to-size orders have an acceptable cut tolerance of 1/8" (0.125"), so clarify if the adjustment is to be made on the (+) or (-) side of the saw blade.Please review our full return and shipping policy here.
Measure Twice, Cut Once
Since custom cuts and fabricated parts are non-refundable, be very careful while measuring your dimensions. As each cut is nominal, even the slightest miscalculation could be costly.
How to Use a Measuring Tape
Extend your tape measure several inches to find the 1 and 2 inch markers. In between the inch markers you’ll find 16 equally spaced tick marks.
Measure by counting the increments beyond the nearest inch. As the increments decrease, so does the length of the mark. For example, 1/2\" has a bigger mark than 1/4\" which has a bigger mark than 1/8\". The smallest mark follows at 1/16\". Please be aware that some measuring tapes may have even smaller increments.
Features of a Measuring Tape: Sliding End Hook
The sliding end hook is designed for two different types of measurements. An outside measurement (where the hook of the tape hangs over an edge), requires the hook to slide out a bit to account for the thickness of the material. When making an inside measurement (where the hook will push up against a surface), the clip slides in, again, accounting for its thickness. The measuring tape self-adjusts to guarantee an accurate measurement (as far as the tape is concerned).
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HDPE Black Sheet
Black Industrial Grade HDPE | Cut-to-Size & Full Sheet | UV, Moisture & Chemical Resistant
The UV-Stable Standard for Outdoor & Industrial Durability
Black HDPE is the engineering standard for outdoor and industrial environments. Unlike Natural HDPE, this sheet features a carbon black additive for superior UV resistance, preventing brittleness and cracking from sun exposure.
It is impact-resistant, moisture-immune, and chemically inert—ideal for marine construction, outdoor cabinetry, and wear liners. The opaque black finish naturally conceals dirt, grease, and industrial grime.
Note on Surface Finish: This is an unmasked, industrial-grade plastic. Minor scuffs are normal and do not affect performance. If you require a pristine, textured cosmetic finish (e.g., for visible boat cabinetry), we recommend King Starboard®
Why Choose Black HDPE?
This sheet is engineered to withstand demanding outdoor and industrial settings. It is the correct choice if your project requires:
UV & Weather Resistance: Formulated with carbon black to resist degradation from sunlight and harsh weather, making it ideal for outdoor use where Natural HDPE would eventually discolor and crack.
Aesthetic Maintenance: The opaque black color naturally hides grease, oil, and grime. This is critical for factory environments where white sanitary sheets would show stains immediately.
Broad Chemical Resistance: Impervious to most acids, solvents, and harsh detergents. Its non-porous surface is immune to moisture, preventing mildew growth and odor absorption.
Thermoforming: Unlike UHMW, HDPE can be heated and vacuum-formed. This makes it ideal for manufacturing complex 3D shapes like automotive dunnage, custom trays, and equipment housings.
Material Selection: Which Polyethylene Do You Need?
Polyethylenes look similar but perform differently. Choose the right grade for your environment:
Choose Black HDPE (This Sheet) for outdoor or dirty environments. Black HDPE is best for outdoor projects, marine parts, or industrial liners where UV stability and dirt- and grease-hiding are critical.
Choose Natural (White) HDPE for FDA Compliance in sanitary or food-contact environments. Best for cutting boards and food chutes. (Note: Black HDPE is not FDA compliant).
Choose Marine Board HDPE for marine environments or marine-grade applications where UV stability is required. (Note: Black HDPE is not FDA compliant).
Choose UHMW for sliding wear. If you need extreme abrasion resistance (e.g., conveyor guides, snow plow edges) or a lower coefficient of friction, UHMW lasts longer than HDPE.
HDPE is non-abrasive and easy to machine using common woodworking tools. It can be cut with standard carbide-tipped saw blades and drilled with standard bits. Note that due to its chemical resistance, HDPE cannot be bonded with standard adhesives, only specialty 2-part epoxies. It must otherwise be mechanically fastened or heat-welded.
When you order from Interstate Plastics, you're accessing over four decades of material expertise. We ensure our Black High Density Polyethylene sheets meet strict tolerance standards for thickness and flatness, ensuring your project is ready for assembly and performs reliably the moment it arrives.
What is Interstate Advanced Materials's Shipping Policy? Our shipping policy can be found here and orders placed for non-cut-to-size stock items typically ship within 3 working days.
Is Interstate Advanced Materials site secure? Absolutely. Your information is passed through our https site when you make a purchase. Your Credit Card is never stored on file.
Disclaimer: Interstate Advanced Materials makes no representations about any of its products that are modified in any way after they leave its possession, nor do its representations apply when any of its products are improperly used or stored. Each customer of Interstate Advanced Materials bears full responsibility for making its own determination as to the suitability of each material, product, recommendation or advice provided by Interstate Advanced Materials. Each customer of Interstate Advanced Materials must identify and perform all tests and analyses necessary to assure that its finished parts incorporating materials from Interstate Advanced Materials will be safe and suitable for use under end-use conditions.
