---
product_id: 659707364
title: "Flex TPU 85A 3D Filament (Black, 1 kg) | High Flexibility and Strength, High Flow & Speed, Moisture Resistant Aluminium Bag for Footwear, Protections"
brand: "siraya tech"
price: "₩150498"
currency: KRW
in_stock: true
reviews_count: 5
category: "Siraya Tech"
url: https://www.desertcart.kr/products/659707364-flex-tpu-85a-3d-filament-black-1-kg-high-flexibility
store_origin: KR
region: South Korea
---

# High flow design enables faster print speeds 85A Shore hardness for superior flexibility ISO 10993 biocompatibility tested for safety Flex TPU 85A 3D Filament (Black, 1 kg) | High Flexibility and Strength, High Flow & Speed, Moisture Resistant Aluminium Bag for Footwear, Protections

**Brand:** siraya tech
**Price:** ₩150498
**Availability:** ✅ In Stock

## Summary

> 🖤 Flex your creativity with Siraya Tech Flex TPU 85A — where speed meets stretch!

## Quick Answers

- **What is this?** Flex TPU 85A 3D Filament (Black, 1 kg) | High Flexibility and Strength, High Flow & Speed, Moisture Resistant Aluminium Bag for Footwear, Protections by siraya tech
- **How much does it cost?** ₩150498 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/659707364-flex-tpu-85a-3d-filament-black-1-kg-high-flexibility)

## Best For

- siraya tech enthusiasts

## Why This Product

- Trusted siraya tech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile & Compatible:** Works seamlessly with most direct drive 3D printers—ideal for custom footwear, phone cases, and more.
- • **Speed Without Sacrifice:** High flow TPU 85A prints faster than standard 95A filaments—because your time is valuable.
- • **Biocompatible Confidence:** ISO 10993 tested, making it safe for medical devices and wearable tech—print with peace of mind.
- • **Moisture-Proof Packaging:** Sealed in resealable aluminum foil to keep your filament fresh and print-ready for up to 3 years.
- • **Flexibility Meets Durability:** Rubber-like elasticity with thermoplastic toughness for projects that bend but don’t break.

## Overview

Siraya Tech Flex TPU 85A is a premium black 1.75mm thermoplastic polyurethane filament designed for 3D printing projects requiring exceptional flexibility and durability. With a Shore hardness of 85A, it offers softer, more elastic prints than typical 95A TPU filaments. Its high flow formulation enables faster printing speeds, optimized for direct drive extruders. The filament is ISO 10993 biocompatibility tested, ensuring safety for medical and wearable applications. Packaged in moisture-resistant resealable aluminum foil, it maintains quality for up to 3 years. Ideal for professionals and enthusiasts creating flexible parts like custom footwear, seals, and protective cases.

## Description

Introducing Siraya Tech Flex Black/White TPU 3D Printer Filament - An Advance in 3D Printing Technology. With its Shore hardness of 85A, this premium filament is designed for a wide range of printing needs, from professional uses to enthusiasts. Why Choose Siraya Tech Flex TPU 3D Printer Filament? EXCEPTIONAL FLEXIBILITY AND DURABILITY - Our 85A TPU Flex filament combines rubber-like elasticity with thermoplastic durability, perfect for versatile projects. And it is significantly softer than the commonly available 95A TPU. HIGH FLUSH, HIGH SPEED - The high flow design of the Flex TPU 85A allows faster 3D printing speeds than standard 95A TPU. Get great results without sacrificing print time. EASY TO USE PRINTING - Designed for hassle-free printing, our 1.8mm 3D printer filament ensures a smooth and uninterrupted printing experience. Advanced Moisture Protection: Thanks to its aluminium packaging, our filament remains protected from moisture and external factors, preserving its quality for longer. WIDE USE: Whether it's custom footwear, protective cases for phones or medical devices, the Flex TPU 85A is the filament you choose. Safety comes first: prioritizing your health, our biocompatible filament is suitable for sensitive applications such as medical device manufacturing.

Review: Good filament but... - The filament itself is great, but it was a terrible idea to put such a difficult to feed filament on a cardboard spool. My spool was very minorly damaged, so the filament wasn't feeding properly from my Creality Space Pi drier, so I had to reload it onto a spare plastic spool I had.
Review: Very soft, won't print on just any machine but very nice filament! - This is very soft TPU, ideal for stuff like rubber seals and rc car tyres. It is smooth and shiny and has an impressive amount of strength. It can be stretched quite a lot, you have to work quite hard to tear it so I feel that it could be a long lasting material for seals and tyres etc. A word of caution - this will not work in all machines. Its so soft that to get it to feed into the extruder I had to bypass the Bowden tube altogether as it creates too much friction. On my Creality K1 Max I can remove the top so I fed it directly into the extruder and left the top off of the machine. You then have to release the tension on the filament as it enters the extruder or it will crush the filament and jam up before it even enters. If you have anything other than a direct drive extruder forget it. You just can't push this stuff through Bowden tube it physically won't go. Dual extruder is a MASSIVE advantage. If you have the ability to extrude both this and PETG/PLA at the same time then youre laughing. Use the PETG/PLA for the support structure and print the object on top of that. Printing a support structure made of this TPU and then the model on top won't work, you won't get the two apart without a fight I promise you. All that aside it is really good filament so ill be ordering this again in the future.

## Features

- SUPERIOR FLEXIBILITY AND DURABILITY - Siraya Tech Flex TPU 3D Printer Filament 85A is characterised by flexibility and elasticity, making it ideal for durable and bendable 3D printing. Perfect for smoother and more flexible projects.
- ISO 10993 TESTED - Our TPU Flex 85A has been tested according to ISO 10993-10, -5 and -23 protocols. These tests evaluate biological responses to materials and provide data on possible biocompatibility. These tests ensure safety when printing portable devices and accessories for outdoor use.
- HIGH FLUSH, HIGH SPEED - Designed for high flow, the Flex TPU 85A filament enables faster prints than typical 95A TPU, combining excellent speed and results. For the best printing experience, we recommend using a direct drive extruder.
- DURABLE QUALITY WITH SPECIAL PACKAGING - Our flex TPU 3D printer filament is sealed in moisture-resistant and resealable aluminum envelopes that prevent water absorption and ensure durability for up to 3 years and consistent print quality.
- VERSATILE FOR VARIOUS APPLICATIONS - From custom footwear to medical devices, this flexible 1.8mm TPU filament meets different needs in creative and industrial sectors. Compatible with most 3D printers, ensures a smooth and reliable printing process, suitable for both beginners and advanced users.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CP213ZMG |
| Additional Features | High flexibility and toughness, ISO 10993 tested, high flow and speed, durable quality with special packaging, versatile for various applications |
| Brand | Siraya Tech |
| Brand Name | Siraya Tech |
| Color | 38a black |
| Colour | 38a black |
| Customer Reviews | 4.5 out of 5 stars 358 Reviews |
| EU Spare Part Availability Duration | 3 Years |
| Item Diameter | 1.75 Millimeters |
| Item Weight | 1 Kilograms |
| Item diameter | 1.75 Millimeters |
| Item weight | 1 Kilograms |
| Manufacturer | Siraya Tech |
| Manufacturer Part Number | Flex TPU 85A Black 1kg |
| Material | Thermoplastic Polyurethane |
| Material Type | Thermoplastic Polyurethane |
| Number of Items | 1 |
| Special features | High flexibility and toughness, ISO 10993 tested, high flow and speed, durable quality with special packaging, versatile for various applications Special features High flexibility and toughness, ISO 10993 tested, high flow and speed, durable quality with special packaging, versatile for various applications See more |
| Unit Count | 1000.0 Grams |

## Product Details

- **Brand:** Siraya Tech
- **Colour:** 38a black
- **Item diameter:** 1.75 Millimeters
- **Item weight:** 1 Kilograms
- **Material:** Thermoplastic Polyurethane

## Images

![Flex TPU 85A 3D Filament (Black, 1 kg) | High Flexibility and Strength, High Flow & Speed, Moisture Resistant Aluminium Bag for Footwear, Protections - Image 1](https://m.media-amazon.com/images/I/711bEiSBbSL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐ Good filament but...
*by D***E on 22 June 2026*

The filament itself is great, but it was a terrible idea to put such a difficult to feed filament on a cardboard spool. My spool was very minorly damaged, so the filament wasn't feeding properly from my Creality Space Pi drier, so I had to reload it onto a spare plastic spool I had.

### ⭐⭐⭐⭐⭐ Very soft, won't print on just any machine but very nice filament!
*by D***E on 4 July 2026*

This is very soft TPU, ideal for stuff like rubber seals and rc car tyres. It is smooth and shiny and has an impressive amount of strength. It can be stretched quite a lot, you have to work quite hard to tear it so I feel that it could be a long lasting material for seals and tyres etc. A word of caution - this will not work in all machines. Its so soft that to get it to feed into the extruder I had to bypass the Bowden tube altogether as it creates too much friction. On my Creality K1 Max I can remove the top so I fed it directly into the extruder and left the top off of the machine. You then have to release the tension on the filament as it enters the extruder or it will crush the filament and jam up before it even enters. If you have anything other than a direct drive extruder forget it. You just can't push this stuff through Bowden tube it physically won't go. Dual extruder is a MASSIVE advantage. If you have the ability to extrude both this and PETG/PLA at the same time then youre laughing. Use the PETG/PLA for the support structure and print the object on top of that. Printing a support structure made of this TPU and then the model on top won't work, you won't get the two apart without a fight I promise you. All that aside it is really good filament so ill be ordering this again in the future.

### ⭐⭐⭐⭐⭐ S'imprime très bien sur une K1 MAX à 30mm/s
*by L***Y on 10 October 2025*

Siraya Tech Flex TPU 85A : Un TPU 85A exceptionnel ! Je suis extrêmement satisfait de ce filament Siraya Tech Flex TPU 85A. C'est un excellent choix pour quiconque cherche un matériau à la fois souple et résistant. Qualité d'impression et Compatibilité Le niveau de flexibilité (dureté 85A) est parfait pour des pièces nécessitant une bonne élasticité sans être trop "mou" à l'impression. J'ai obtenu de très bons résultats en l'utilisant sur mon imprimante Creality K1 Max. Il s'imprime étonnamment bien, même à une vitesse de 30 mm/s pour le remplissage, avec une adhérence entre les couches remarquable et des impressions propres et fiables. C'est un excellent point pour un filament flexible ! Conseil d'utilisation : L'importance du séchage Un point crucial à noter pour réussir vos impressions : ce TPU, comme beaucoup de flexibles, est très sensible à l'humidité. Il est impératif de s'assurer que le filament est parfaitement sec avant et pendant l'utilisation. J'ai dû le passer au sèche-filament pour obtenir des performances optimales. Si le filament n'est pas sec, vous risquez d'avoir des bulles, des défauts de surface et une mauvaise extrusion. Une fois sec, il s'imprime à merveille. Verdict C'est un TPU que je recommande vivement, en particulier aux utilisateurs d'imprimantes rapides comme la K1 Max, à condition de faire très attention à son séchage. La qualité Siraya Tech est au rendez-vous. C'est un excellent rapport qualité-prix pour des pièces techniques ou des prototypes souples !

## Frequently Bought Together

- Siraya Tech Flex TPU Filament - 85A Shore, ISO 10993, High Flexibility & Toughness, High Flow & Speed, Easy to Print, Moisture-Resistant Aluminum Bag - Ideal for Footwear, Protective Gear (Black, 1kg)
- OVERTURE TPU Filament 1.75mm Flexible TPU Roll, 95A Soft 3D Printer Filament, 1kg Spool (2.2 lbs), Dimensional Accuracy +/- 0.02 mm (TPU Black)
- OVERTURE PETG Filament 1.75mm, 3D Printer Filament, 1kg Filament (2.2lbs), Dimensional Accuracy Probability +/- 0.02 mm, Fit Most FDM Printers (Black (1-Pack))

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-08-18*