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Black CoexFlex™ 30D TPE

TPU-Like Flexibility, Faster Printing, Greater Strength

Experience flexible printing without the fuss. CoexFlex™ 30D TPE (TPC) delivers the same smooth, rubber-like performance you expect from TPU—but prints faster and with superior strength, heat, and chemical resistance.

With excellent layer adhesion and a soft 30D Shore hardness, it’s ideal for parts that need to flex, bend, and endure repeated use. From protective grips to seals and functional prototypes, CoexFlex™ 30D maintains durability where TPU can fall short.

Formulated from a Thermoplastic Copolyester Elastomer (TPC), it offers exceptional temperature and abrasion resistance while remaining easy to print on any TPU-capable setup.

Proudly made in the USA.

Benefits of CoexFlex™ Filament

Excellent layer adhesion
Great durability
Wide range of hardness options (60A, 30D, 40D, 60D)

Uses

Soft handles and grips
Protective cases and skins
Custom-shaped seals and gaskets
Soft and flexible functional parts

Recommended Print Settings

Hotend Temperature: 205 °C - 250 °C
Bed Temperature: 25 °C - 85 °C
Heated Bed Recommended
Recommended Build Surfaces/Adhesives:

Magigoo
Magigoo Flex
Painter's Tape
Gluestick
PEI

Part Cooling Fan Recommended

CoexFlex 30D TPE print settings

Print CoexFlex 30D TPE with a 220–240°C nozzle, a 25–85°C bed and the fan at 0–40%, with no enclosure, and dry it at 50°C for 4–6 hours.

These are COEX 3D's recommended starting settings, made to match the COEX 3D filament settings tables for every filament we make in Green Bay, Wisconsin. Treat each value as a starting point and adjust it for your printer.

1. Material notes

Keep filament dry: store it sealed, and dry it again only after the spool has been exposed to air
Dry an opened spool at 50°C for 4–6 hours
No enclosure is needed
Preferably use a direct drive extruder
Print multiple parts one at a time (sequentially) to minimize stringing
Use maximum travel speed to minimize stringing

2. Temperature settings

Nozzle temperature: 220–240°C

Bed temperature: 25–85°C

Use a glue stick or hairspray as a release agent, or WELD3D. CoexFlex bonds very strongly to glass and smooth PEI, so a release agent protects both the print and the plate

3. Basic parameters

Unlike rigid filaments, TPE stretches as it is extruded and lays down thinner lines, so the line widths below are slightly smaller than the nozzle diameter. This keeps walls and perimeters properly bonded.

CoexFlex 30D TPE basic parameters by nozzle size
Nozzle	Layer height	Line width	Max volumetric speed	Nozzle temperature
0.4mm	0.2mm	0.35mm	2.5 mm³/s	240°C
0.6mm	0.3mm	0.55mm	5.6 mm³/s	240°C
0.8mm	0.4mm	0.75mm	10.0 mm³/s	240°C
1.0mm	0.5mm	0.95mm	15.6 mm³/s	240°C

4. Speed settings

0.4mm nozzle (max volumetric speed 2.5 mm³/s)

CoexFlex 30D TPE speeds for a 0.4mm nozzle
Line type	Percentage	Speed
External perimeter	50%	17.86 mm/s
Internal perimeters	75%	26.79 mm/s
Infill	100%	35.71 mm/s
Top/bottom	60%	21.43 mm/s
First layer	30%	10.71 mm/s

0.6mm nozzle (max volumetric speed 5.6 mm³/s)

CoexFlex 30D TPE speeds for a 0.6mm nozzle
Line type	Percentage	Speed
External perimeter	50%	17.00 mm/s
Internal perimeters	75%	25.50 mm/s
Infill	100%	34.00 mm/s
Top/bottom	60%	20.40 mm/s
First layer	30%	10.20 mm/s

0.8mm nozzle (max volumetric speed 10.0 mm³/s)

CoexFlex 30D TPE speeds for a 0.8mm nozzle
Line type	Percentage	Speed
External perimeter	50%	16.67 mm/s
Internal perimeters	75%	25.00 mm/s
Infill	100%	33.33 mm/s
Top/bottom	60%	20.00 mm/s
First layer	30%	10.00 mm/s

1.0mm nozzle (max volumetric speed 15.6 mm³/s)

CoexFlex 30D TPE speeds for a 1.0mm nozzle
Line type	Percentage	Speed
External perimeter	50%	16.42 mm/s
Internal perimeters	75%	24.63 mm/s
Infill	100%	32.84 mm/s
Top/bottom	60%	19.70 mm/s
First layer	30%	9.85 mm/s

5. Retraction settings

Important: Set travel speed to the maximum your machine allows (200–500mm/s). Faster moves give the filament less time to ooze, which reduces stringing.

CoexFlex 30D TPE retraction by nozzle size
Nozzle	Distance	Speed	Z-hop
0.4mm	1.8–2.8mm	35mm/s	0.2mm
0.6mm	1.8–2.8mm	35mm/s	0.2mm
0.8mm	2.0–3.0mm	35mm/s	0.2mm
1.0mm	2.0–3.0mm	35mm/s	0.2mm

6. Cooling settings

Cooling configuration:

First layer: 0% (fan off)
General printing: 0% (fan off)
Force fan speed for overhangs and bridges: off
Layers under 20 seconds: 40% fan speed

7. Troubleshooting

CoexFlex 30D TPE troubleshooting
Problem	Solution
Irregular extrusion	Dry the filament Check the extruder Reduce speed
Poor adhesion	Dry the filament Use an adhesive Adjust the first layer
Stringing	Dry the filament Adjust retraction Increase travel speed Check temperature

Please note: These printing parameters are initial recommendations based on our experience. They may need adjustment for your specific 3D printer, environmental conditions and the geometry of the part you are printing. Use them as a starting point and fine-tune them for your needs.

Coex 3D Filament Slicer Profiles

CX20 CoexFlex TPE 30D Technical Data Sheet

Technical Data Sheet: CX19 COEX-FLEX TPE 60D SERIES 3D PRINTING FILAMENT

TDS Rev 1.0

BASE RESIN: DuPont Hytrel

Physical Properties

Property	Standard	Unit	Typical Value
Specific Gravity - Density	ISO 1183	g/cm³	1.25
Melting Temperature, 10°C/min	ISO 11357-1/-3	°C	165
Vicat Softening Temp, 50°C/h, 10N	ISO 306	°C	130
Hardness, Shore D (max)	ISO 868	-	60

Mechanical Properties

Property	Standard	Unit	Typical Value
Tensile Stress @ Break FLAT / VERT.	ISO 527 Type 1BA	MPa	≥20 / 17
Tensile Modulus	ISO 527 Type 1A	MPa	130
Nominal Strain @ Break FLAT / VERT.	ISO 527 Type 1BA	%	≥ 250 / ≥ 250
Tensile Stress @ 50% FLAT / VERT.	ISO 527 Type 1BA	MPa	14 / 13
Unnotched Izod Impact FLAT / VERT.	ISO 180/1A	kJ/m²	No Break / 8
Shrinkage Rate < 0.5%	ISO 294-4	mm/mm	0.30 - 0.70%

Thermal Properties

Property	Standard	Unit	Typical Value
Glass Transition Temperature (Tg)	ISO 11357-2	°C	-50.0
Melt Temperature	-	°C	152
Drying Temperature @ 3 hours	-	°C	80

SPECIFICATIONS

Filament Size:	1.75mm	(in)	2.85mm	(in)
MIN Diameter:	1.72mm	0.0677 in	2.79mm	0.1098 in
MAX Diameter:	1.78mm	0.0701 in	2.91mm	0.1146 in
Tolerance	+/- .03mm	+/- 0.0012 in	+/- .06mm	+/- 0.0024 in

ADVANTAGES

Resilient, Flexible, Heat Resistant, Chemical Resistant, Strong, Durable
Contains up to 60% renewably sourced materials from biomass
Combines the flexibility of rubber with the strength and processability of thermoplastics

Printed Specimen Conditions

Printer:	Open Source FDM/FFF
Nozzle:	0.4mm
Layer Height:	0.25mm
Infill:	100%, +/-45°
Extrusion Temp:	210 - 250°C
Bed Temp:	85°C
Specimen Orientation:	XY Flat and Vertical
Printing Speed	20mm/sec..

Disclaimer: The technical data contained on this data sheet is furnished without charge or obligation and accepted at the recipient's sole risk. This data should not be used to establish specifications limits or used alone as the basis of design. The data provided is not intended to substitute any testing that may be required to determine fitness for any specific use.

Download TDS (PDF)

CX20 CoexFlex TPE 30D Safety Data Sheet

Material Safety Data Sheet: CX20 TPE 30D SERIES 3D PRINTING FILAMENT

MSDS Rev 1.0

BASE RESIN: Dupont™ Hytrel 3078

1. Identification of the substance/preparation and of the company

1.1 Trade name:Coexflex TPE 30D 3D printer filament

1.2 Use of the product:3D printer filament, thermoplastic.

1.3 Supplier:Coex
660 Corporate WAY
Pulaski, WI 54162
Phone: (920) 757-1055

2. Hazards identification

2.1 Classification:Not a hazardous substance or mixture according to EC-directives 67/548/EEC or 1999/45/EC.

2.2 Special advice on hazards:No specific dangers known

3. Composition / information on ingredients

3.1 Chemical characteristics:

Copolymer of butylene phthalate and polyalkylene-ether glycol

4. First-aid measures

4.1 On skin contact:In case of contact with molten polymer immediately cool the skin with cold water. Medical aid may be required to remove adhering material and for treatment of burns. The material is not likely to be hazardous by skin contact, but cleaning the skin after use is advisable.

4.2 After inhalation:Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

4.3 On ingestion:If swallowed, wash out mouth with water provided person is conscious.

4.4 On eyes contact:In case of contact, immediately flush eyes with copious amounts of water for at least (15) minutes.

5. Fire-fighting measures

5.1 Suitable fire extinguishing media:Water spray, chemical powder or carbon dioxide.

5.2 Special exposure hazards:No particular hazards known.

5.3 Special protective equipment:Self-contained breathing apparatus

5.4 Remark:In case of fire and/or explosion do not breathe fumes.

6. Accidental release measures

6.1 Personal precautions:Spilled material may cause a slipping Hazard.

6.2 Methods for cleaning up:Vacuum or sweep up material and place into a suitable disposal container.

7. Handling and storage

7.1 Handling:Avoid contact with molten polymer.

7.2 Storage:Protect against moisture. Store cool and keep packaging closed when not in use. Avoid sources of ignition.

8. Exposure controls/ personal protection

8.1 Technical safety measures:General mechanical ventilation is normally adequate but use local exhaust where necessary to maintain exposures below acceptable limits. Use local exhaust to completely remove vapors and fumes liberated during hot processing from the work area.

8.2 Personal safety equipment:Use adequate safety equipment, e.g. protective clothing, eye protection glasses, heat protection gloves. Additives in this product do not present a respiration hazard unless the product is ground to a powder of respirable size and the dust is inhaled. All dusts are potentially injurious to the respiratory tract if respirable particles are generated and inhaled. A respiratory protection program that meets country requirements must be followed whenever workplace conditions warrant respirator use. Consult the respirator manufacturer to determine the appropriate type of equipment for a given application. Observe respirator use limitations specified by the manufacturer. Consult the OSHA respiratory protection information located at 29CFR 1910.134. Use a positive pressure air supplied respirator if exposure levels are not known or there are any other circumstances where air purifying respirators may not provide adequate protection.

8.3 Work hygiene:No eating or drinking during working. Avoid contact of hot material with the skin. Avoid breathing dust and vapors.

9. Physical and chemical properties

9.1 Form:Spool

9.2 Color:Various

9.3 Odor:None

9.4 Melting Temperature:150-225C

9.5 Oxidizing properties:Not self-igniting / flammable

9.6 Explosions limits:No test data

9.7 Density:1.25 g/cm³

9.8 Solubility in water:Not soluble

10. Stability and reactivity

10.1 Stability:The product is stable at recommended storage conditions.

10.2 Conditions to be avoided:Temperature > 275 °C (> 527 °F) Abnormally long processing time or high temperatures can produce irritating and toxic fumes. Decomposes on heating. At temperatures above the "conditions to avoid" temperature, thermal decomposition of the resin accelerates. Decomposition can occur below the recommended processing temperature limit. Decomposition is a function of both processing temperature and time at that temperature.

10.3 Substances to be avoided:No special recommendations.

10.4 Hazardous decomposition products:Hazardous thermal decomposition products may include: Tetrahydrofuran, Carbon dioxide, Carbon monoxide, Acetic acid, 2- Methylpropene, Acetaldehyde, Formic acid, Acrolein, Propionaldehyde.

11. Toxicological information

11.1 Local irritation:None

11.2 Other remarks:None

12. Ecological information

12.1 Biological degradation:This product is not biodegradable.

12.2 Bioaccumulation:This product is not biodegradable.

13. Disposal considerations

13.1 Product:In accordance with local and national regulations. Should not be released into the environment. Do not contaminate ponds, waterways or ditches with chemical or used container.

13.2 Uncleaned packaging:Packaging material has to be emptied completely and disposed in accordance with the regulations. Packaging can be recycled if not contaminated.

14. Transport information

14.1 Transport regulations:Not classified as hazardous under transport regulations DOT, ICAO/IATA, IMDG/GGVSee, ICAO/IATA

15. Regulatory information

15.1 EPA regulations:none

16. Other information

This data is based on the current state of our information and experience. This safety data sheet describes our product in terms of safety requirements. Preceding data is not applicable as a warranty of product properties. It is the responsibility of the recipient to observe the existing legal regulations for the use of this product.

Disclaimer: The safety data contained on this data sheet is furnished without charge or obligation and accepted at the recipient's sole risk. This data describes our product in terms of safety requirements. The data provided is not applicable as a warranty of product properties. It is the responsibility of the recipient to observe the existing legal regulations for the use of this product.

Download SDS (PDF)

Black CoexFlex™ 30D TPE

SKU: CX20-0300-18-1KG

3 reviews

Diameter: 1.75mm

Weight: 1kg

Variant

Price:

$80.00

Stock:

Stock: 14

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