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Crystal Flex

Crystal Flex is a SBC type of 3D printer filament that yields formability, toughness, and clarity into is a high-performance semi-flexible 3D printer filament.


When a product is out of stock, it is usually restocked within two weeks.

SKU: Crystal Flex

Crystal Flex (styrene-butadiene copolymer) yields formability, toughness, and clarity into is a high-performance semi-flexible 3D printer filament. Crystal Flex meets the specifications of the United States FDA Food Packaging Regulation 21 CFR 177.1640 and complies with UL 94 HB flammability standards.

Key features

  • Excellent clarity
  • Very clear filament with 92% light transmittance and high surface gloss
  • Semi-flexible, bendable and resilient
  • Shore hardness of 63D and bendable up to 230% without causing white stress marks
  • Food contact acceptable
  • UL 94 HB flammability rating
  • Compatible with Helios Support for complex multi-extrusion 3D printing



  • Fit testing
  • Lighting
  • Bottles, boxes, containers and (blister) packaging
  • End-use parts
  • Medical and lab equipment


General printing guidelines *

Nozzle size: ≥ 0.15mm Layer height: ≥ 0.1mm Experience level: Beginner / Intermediate
Print temp: ± 230 – 260° C Fan speed: 0-30%  
Heat bed: ± 80 – 100° C Enclosure needed: No

*) Above displayed settings are meant as guidance to find your optimal print settings. These ranges in settings should work for most printers, but please do feel free to experiment outside these ranges if you think it is suitable for your printer. There is a lot of different type of printers, hot-ends and printer offset that it is extremely difficult to give an overall one-size-fits-all setting.

Filament length

ρ: 1.01 g/cc 50 gr coil 0.5 Kg spool
Ø 1.75mm ± 20.6m ± 206m
Ø 2.85mm ± 7.8m ± 78m


Product export information

HS Code: 39169090 Description: Monofilament Country of origin: the Netherlands


Compliance *

This filament is compliant with the below-listed directives and regulations.

  • RoHS directive 2011/65/EC
  • REACH directive 1907/2006/EC

*) This declaration of conformity to directives and regulations is prepared according to our present standard of knowledge and may be amended if new cognitions are available and applies only for the above-described products.

Technical Datasheet:

Safety Datasheet: