![桌上的脊柱模型](https://static.wixstatic.com/media/11062b_98a29739b259462a85d29068f54806d5~mv2.jpg/v1/fill/w_458,h_305,al_c,q_80,usm_0.66_1.00_0.01,enc_avif,quality_auto/11062b_98a29739b259462a85d29068f54806d5~mv2.jpg)
Medical Grade Filament
Our medical grade filaments meet USP<88> Class VI (in vivo) and USP<87> (in vitro) standards, providing exceptional chemical resistance, mechanical strength, and temperature stability.
PEN-Natural
![S__117735432去背.png](https://static.wixstatic.com/media/9618fc_0747f489fcec42baa4defd0eb5d0b1fd~mv2.png/v1/fill/w_167,h_268,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_0747f489fcec42baa4defd0eb5d0b1fd~mv2.png)
Approved up to 24-hour contact with skin and tissue and, where applicable, indirect with blood.
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Engineering-Grade Performance: Combines chemical resistance, heat stability, and low extractable potential.
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Superior Printability: Excellent bed adhesion, minimal warping, and fast print speeds at 270~285°C.
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Accessible: Delivers high-performance benefits without needing ultra-premium 3D printers.
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Precision Manufacturing: Available in 1.75mm and 2.85mm diameters with strict tolerances, utilizing processes similar to medical-grade tubing.
Characteristics and Benefits of PEN-Natural in FDM Applications:
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Exceptional chemical resistance and barrier properties for demanding environments.
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Suitable for applications requiring autoclave, gmma, and EtO sterilization compatibility.
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FDA food-contact approved; meets USP 88 Class VI and USP 87 for bio-inertness
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With optimized printing conditions, enables water-tight and low-vacuum suitability without post-processing.
Filament Specification:
![image.png](https://static.wixstatic.com/media/9618fc_616ff8913d994d729eec69ac65f4ec2e~mv2.png/v1/fill/w_706,h_71,al_c,lg_1,q_85,enc_avif,quality_auto/9618fc_616ff8913d994d729eec69ac65f4ec2e~mv2.png)
![PEN Natural Filament](https://static.wixstatic.com/media/9618fc_852ceafa8e9d4d06822c1e4447ec101e~mv2.jpg/v1/fill/w_980,h_765,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_852ceafa8e9d4d06822c1e4447ec101e~mv2.jpg)
![PEN structure](https://static.wixstatic.com/media/9618fc_6190690713534d3094ebd0726c7f3e14~mv2.png/v1/fill/w_381,h_218,al_c,q_85,enc_avif,quality_auto/9618fc_6190690713534d3094ebd0726c7f3e14~mv2.png)
![PEN Natural Filament](https://static.wixstatic.com/media/9618fc_852ceafa8e9d4d06822c1e4447ec101e~mv2.jpg/v1/fill/w_980,h_765,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_852ceafa8e9d4d06822c1e4447ec101e~mv2.jpg)
Printing Orientation:
![image.png](https://static.wixstatic.com/media/9618fc_333b25fe8f294ebeab4d346ab348b73f~mv2.png/v1/fill/w_338,h_206,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_333b25fe8f294ebeab4d346ab348b73f~mv2.png)
The FDM process creates parts with a layered structure, causing mechanical properties to be anisotropic based on print orientation.*1
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Flat XY orientation: predominant mechanical strength from infill
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Side YZ orientation: predominant mechanical strength from walls
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Upright Z orientation: interlayer adhesion strength.
![image.png](https://static.wixstatic.com/media/9618fc_de00c36992844fa5a8ff4c04c0e00b57~mv2.png/v1/fill/w_710,h_297,al_c,lg_1,q_85,enc_avif,quality_auto/9618fc_de00c36992844fa5a8ff4c04c0e00b57~mv2.png)
#: third party testing by:
![image.png](https://static.wixstatic.com/media/9618fc_73e7198349784c3a8afbb9909069d6c1~mv2.png/v1/fill/w_53,h_21,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_73e7198349784c3a8afbb9909069d6c1~mv2.png)
*1 The values reported in TDS represent the average from a batch of 10 test specimens. For tensile, flexural, and impact properties of the 3D printed test specimens were produced using a 0.4 mm nozzle, 100% infill, print speed of 60mm/s, a nozzle temperature of 270°C and a build plate temperature of 80°C. FLXR Engineering is continuously working on expanding the TDS data
Chemical Resistance Chart:
![20241123 for website blue.png](https://static.wixstatic.com/media/9618fc_88a1ab83b4994f99a3bd45c491eaf3e4~mv2.png/v1/fill/w_648,h_562,al_c,q_90,usm_0.66_1.00_0.01,enc_avif,quality_auto/20241123%20for%20website%20blue.png)
We tested this material with different solvents both in our lab and with real customers in the field. Keep in mind that resistance levels can change at different temperatures or when solvents are mixed together. Use this data as a general guide. We regularly update our solvent resistance table as we gather more data, and you can download the complete list below.
![](https://static.wixstatic.com/media/9618fc_496f9bf80e9549ecab69ef2e0486d756~mv2.png/v1/fill/w_188,h_195,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_496f9bf80e9549ecab69ef2e0486d756~mv2.png)
PEN is ideal for diverse food types and temperatures, compatible with desktop 3D printers, a practical and funtional fit for food processing jigs and components.
![](https://static.wixstatic.com/media/9618fc_922d75c4f2aa41948b4e9167e3b621af~mv2.png/v1/fill/w_599,h_326,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/9618fc_922d75c4f2aa41948b4e9167e3b621af~mv2.png)