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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Acetal Extruded Black Sheet
Black Copolymer Acetal (POM-C) | Cut-to-Size & Full Sheet | Moisture Resistant & Precision Machinable
Black POM-C: Dimensional Stability for Machined Industrial Parts
When applications demand a combination of dimensional stability, low friction, and improved UV protection compared with natural acetal, Black Acetal (Copolymer POM-C) is an effective engineering material choice. This rigid thermoplastic is formulated to withstand outdoor elements or light-exposed environments better than its natural counterpart, while maintaining the structural integrity required for precision-machined components.
Black acetal is known for its excellent machinability and naturally low coefficient of friction. Because it absorbs very little moisture, it resists swelling and warping in wet conditions. It also withstands a wide range of chemicals, making it suitable for industrial, automotive, and fluid-handling parts that require a durable, dark-colored finish.
Note: Black Acetal's FDA food-contact compliance depends on the specific acetal grade and supplier. Confirm certification requirements before using this material in direct food-contact applications.
Looking for food-contact materials or different mechanical grades? We stock Natural Acetal for applications requiring FDA-compliant formulations, and Homopolymer Acetal (Delrin®) for projects requiring increased stiffness and tensile strength.
Why Choose Black Copolymer Acetal?
This dark-pigmented copolymer is designed to provide reliable performance in diverse mechanical and structural setups. It is a suitable choice if your project requires:
Enhanced UV Resistance:
The black pigmentation helps protect the material from degradation caused by prolonged exposure to ultraviolet light.
Low Moisture Absorption:
Maintains consistent physical properties and tight tolerances even in submerged or high-humidity environments.
Dimensional Stability:
Maintains rigidity and shape under typical mechanical loads, supporting tight tolerances in machined components.
Friction Reduction:
Features a smooth, wear-resistant surface that minimizes the need for external lubrication.
Chemical Resistance:
Offers good resistance to many solvents, hard water, and mild alkaline solutions, while strong acids and strong alkalis should be avoided.
Black Acetal vs. Natural Acetal vs. Nylon
While these are all versatile engineering plastics, their formulations suit different operating requirements.
Choose Black Acetal (This Sheet) if you need the reduced centerline porosity of a copolymer, combined with enhanced UV stability and a black aesthetic. It is ideal for industrial or limited outdoor parts where food-contact certification is not the primary requirement.
Choose Natural Acetal if your application involves food, beverage, or pharmaceutical contact where FDA-compliant material formulations are typically required.
Choose Nylon if you need maximum abrasion resistance and impact absorption for parts like wear pads or heavy-duty rollers, and moisture absorption is not a primary concern.
Black acetal plastic is highly machinable and can be fabricated using standard metalworking and woodworking equipment. It can be easily sawed, drilled, and milled. To achieve precise tolerances and a clean surface finish, it is recommended to use high-speed tooling with minimal vibration.
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 your site secure? Yes, we implement a variety of security measures to maintain the safety of your personal information. Your information is protected both online and offline.
WARNING: This product can expose you to chemicals including Formaldehyde, CAS 50-00-0, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. WARNING: This product can expose you to chemicals including Hexachlorobenzene, CAS 118-74-1, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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.
WARNING: This product can expose you to chemicals including Hexachlorobenzene, CAS 118-74-1, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
