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🖤 Flex your prints with speed and safety — the future of TPU is here!
Siraya Tech Flex TPU Filament (85A Shore) is a high-performance, biocompatible 3D printing material designed for flexible, durable prints. Its high flow rate enables faster printing speeds, while moisture-resistant packaging ensures long shelf life. Ideal for wearable applications like footwear and protective gear, it combines professional-grade toughness with easy printability on most 3D printers.















| ASIN | B0CP213ZMG |
| Additional Features | High Flexibility & Toughness, High Flow & Speed, Moisture-Resistant Packaging, Biocompatibility Testing |
| Best Sellers Rank | #2,611 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #151 in 3D Printing Filament |
| Brand | Siraya Tech |
| Brand Name | Siraya Tech |
| Color | Tpu 85a Black |
| Customer Reviews | 4.4 out of 5 stars 322 Reviews |
| EU Spare Part Availability Duration | 3 Years |
| Item Diameter | 22 Centimeters |
| Item Weight | 1 Kilograms |
| Manufacturer | Siraya Tech |
| Manufacturer Part Number | Flex TPU 85A Black 1kg |
| Material | Flex TPU |
| Material Type | Flex TPU |
| Number of Items | 1 |
| Special Feature | High Flexibility & Toughness, High Flow & Speed, Moisture-Resistant Packaging, Biocompatibility Testing Special Feature High Flexibility & Toughness, High Flow & Speed, Moisture-Resistant Packaging, Biocompatibility Testing See more |
| Unit Count | 35.274 Ounce |
J**H
First time using Siraya and also 85A
Opened the package, windings looked good. Threw it on the printer and got a couple of flawless parts. Used the Bambu 90A profile, with a couple small adjustments and the standard .2 layer height profile. No issues, printed great. 85A is a huge difference in flexibility and softness versus the standard 95A, of course, but perfect for gaskets and protectors.
J**N
Prints well on Bambu P1S
Printed successfully on Bambu P1S. Don't get me wrong, a lot of settings need to be adjusted and accounted for, but this 85a TPU is really great.
G**4
great rubber filament
once you dial in the settings, this is perfect for gaskets and seals, love this stuff.
K**N
Printed just fine for me.
Since I got the 85A, it was hard to print with my Anycubic Kobra S1. It’ll do but you’ll need to make a jig for it since friction gets the best of it in the filament tube. But, it prints at amazing quality and is pretty darn squishy! I would highly recommend. Thanks!
T**E
Wow! I'm blown away
Most TPU filament is shore 95A. I was looking for something softer and decided to give this a shot. My initial impression didn't start off well as the cardboard spool it came on was really beat up. I run TPU out of a Sunlu dryer which has rollers. So when the spool is almost a square, it's less than ideal, especially with stretchy TPU. The box wasn't damaged, so the beat up spool is an issue with their manufacturing facility, not shipping. I didn't have very high hopes after seeing the spool. Boy, was I wrong. This stuff prints amazingly well. I ran a Benchy on my Bambu Lab X1 Carbon. It looked amazing. The 95A TPU I was previously using looks good, but this stuff is another level, which is surprising since it should be harder to printer being more flexible. The Benchy with this TPU rivals the quality of a PLA print. It is nearly flawless. It looks gorgeous. And it's considerably more flexible than 95A TPU. I'm not easily impressed and this stuff blew my socks off. EDIT: I had several print failures but it was due to the really bad cardboard spool. I had to respool it onto a Bambu Labs plastic spool. I wonder how many people that are saying they are having printing issues with this are running into this issue where the wonky carboard spool either doesn't rotate well or the filament gets stuck between the side of the spool.
A**R
Pleased with the results, but definitely takes a specific setup!
Just to keep things basic, I ran 3mm/s³ @ 230c. It started out fine but ~20 layers up I was seeing kinda crazy underextrusion. Canceled the part, thought 'why?'. I print 95A all the time, but this came out so bad I could pull it apart with the slightest effort. Apparently even though my spool could readily spin. It was still too much resistance, switching things up and getting a bearing-based spindle holder made all the difference in the world even though it made the entry to my bowden tube less than ideal. Just the act of getting this stuff off the spool is enough elastic-stretch, to totally bugger things up. Other reviewers are NOT exaggerating. It already complies easily, and is slick, so the moment your direct-drive causes it to stretch, it gets thinner between the extruder gears, so suddenly it almost completely loses grip and the ability to feed further. Kinda wild we are printing with rubber-spaghetti in the first place, tbh.
P**S
Worst TPU ever
Worst TPU we have tried. Even after drying it for over 40 hours, it ended up spaghetting and clogging our bamboo P2S. There are a better filaments out there. It’s also horribly wound and way too stretchy, so difficult to feed reliably. Because of the need for long drying, we ended up being four days outside the return window by the time we got around to printing with this junk. Not happy.
J**Y
Best performing 85A TPU I've tried
I previously printed with Ninjaflex TPU, but at $90 a roll currently I knew I needed to try something different. There aren't many cheap options for 85A TPU in 1.75. I decided to try this in my Bambu Labs X1C. 95A is too plasticy for my application so I avoid it. At first it wasn't doing well, but I eventually found their suggested method on their website and now it prints much cleaner than Ninjaflex. I will say Ninjaflex had a more grippy softer rubber feel, but this one still does the job for me and the consistent print quality makes it worth it. When using an X1C you CANNOT use the AMS with TPU, it's just not stiff enough. I used to feed my Ninjaflex from a Sunlu dryer/storage unit. That was fine but it didn't cut it with the Siraya. As their instructions say: Feed from external spool holder (my Sunlu dryer/box with rolloers is fine) Do not use a PTFE tube Feed directly into the top of the X1C to the extruder - again no PTFE tube! I printed some small wedges that keep the back half of my top glass cracked about 1/4" and it allows me to keep the AMS on top as well.
M**N
Problemloser Druck mit Standard-Profil
Lässt sich wunderbar im Bambu H2S drucken. Vorher anständig getrocknet, im Slicer einfach 'Generic TPU' gewählt und ab dafür. Absolut glatter, gleichmäßiger Druck sogar auf der textured PEI platte. Das hatte ich mit viel komplizierter vorgestellt. Ganz toll (noch toller wäre es nur, wenn es das noch in anderen Farben als Schwarz und Transparent gäbe)!
L**Y
S'imprime très bien sur une K1 MAX à 30mm/s
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 !
A**R
Good Product!
This filament printed much easier than I expected. The web site gave very good guidance for the print settings and the first parts were perfect.
2**マ
85Aショアとは思えない柔軟さ。医療用途対応の実力派TPU
"# Siraya Tech Flex TPUフィラメント レビュー 3Dプリンターで柔軟性が必要な部品を自作したいと考え、複数のTPU製品を検討した結果こちらを選択しました。NinjaTek Cheetahと迷いましたが、ISO 10993認証と高流量対応という仕様に魅力を感じました。 実際に2ヶ月間毎日のように使用して驚いたのは、85Aショアという硬度の割に非常にしなやかで、クッション性に優れている点です。靴のインソール代わりになる保護具を複数製作しましたが、素足で触った時の肌触りが良く、繰り返し曲げても劣化が見られません。印刷時の安定性も良好で、詰まりのトラブルがほぼありませんでした。アルミバッグの密閉性も実感でき、開封から2ヶ月経った今も吸湿の心配がありません。 ただし、印刷速度は通常のPLAより落とす必要があり、私の環境では40mm/s程度が限界でした。急ぎの案件には向きません。 柔軟性と耐久性の両立が必須な日用品や保護具の自作を考えている方に、強くおすすめできる製品です。一方、速度重視や複雑な細部表現が必要な用途には不向きかもしれません。"
P**S
Very very flexible!
This 85a TPU isn’t easy to print but I’m doing it very well now on a ender 3v2 with direct drive and a stock hotend. I haven’t tried printing the filament when it’s wet but I would definitely recommend a dryer even for PLA it makes a huge difference so I am sure it is helping with TPU. When I first opened this it arrived with 9% humidity which is brilliant. It is very well packaged but does not include a silica gel packet. So for printing first I really really struggled with the fillament clogging really badly so I took the hotend apart and replaced the Bowden tube from the direct drive extruder going into the hotend and resolved the 0.4mm nozzle. And it started putting well. I am still calibrating this but I am currently printing with 215 degrees Celsius. With a flow rate of 1.28. And I am still calibrating retraction but 30mm speed for retraction and destruction is working well and maybe roughly 0.5-3mm maybe will work well. I am printing on a glass bed and the fillament sticks very well to it. Just take your time with the z offset and you will be fine. Also if you are struggling put the filament directly above your printer to avoid any extra resistance when pulling in filament which can help to mitigate print issues. I wouldn’t recommend this filament for a Bowden tube system however 95a might be more compatible and work better. The fillament is very very flexible and a huge difference compared to 95a fillament it is great for rubber non slip feet. The printed parts are very very durable and strong. This is a great price for 85a tpu and I can very very highly reccomend this brand I will buy from this company again 100%. Thank you. Also if you are struggling with clogging try a 0.6mm nozzle and you can try using higher temperatures and no retraction. This will decrease the pressure in the hotend and can help to achieve a clog free print. You will probably spend a while calibrating your printer settings but this is worth it!
Trustpilot
3 days ago
1 month ago