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)

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.

The filament works perfectly fine to me and I have had no problems with it so far it’s so soft and hold its shape

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.

I’ve been printing with Siraya Tech Flex TPU (85A Shore) and overall, it’s a solid choice for flexible parts. The filament delivers excellent elasticity and toughness—perfect for footwear prototypes, protective gear, and other functional prints. It flows well at higher speeds compared to many TPU brands, and the moisture-resistant packaging is a nice touch for storage. Print quality is great once you dial in the settings. Layer adhesion is strong, and the finished parts feel durable and smooth. However, TPU can be tricky, and this filament is no exception—you’ll need to fine-tune retraction and speed to avoid stringing. It’s not quite “plug and play,” but that’s expected for flexible materials. The ISO 10993 compliance is a big plus for projects requiring biocompatibility. Overall, this is a high-quality TPU filament that performs well if you’re willing to spend a little time on 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.

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!

I have a Bambu Lab H2 series printer and this 85A printed better than the Bambu 85A TPU filament. Using the standard Bambu 90A print profile I lowered the nozzle temp as indicated on the packaging and the first print came out just fine. I like it - also the edges of the cardboard spool are nicely sealed making it roll smooth.

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.

Qualità del filamento che non mi aspettavo, sono riuscito a stamparlo perfettamente con una bambulab a1 mini, l'unica accortezza è stata nel non fare faticare la bobina nel prendere il filo, la bobina deve girare senza problemi e senza un minimo sforzo

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)!

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 !

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!

I've printed with TPU from maybe 3-4 different brands, all 95A, and this 85A has given me less trouble than all the others! Prints really nicely, layers stick together beautifully, and as long as its dry, the stringing is really minimal. Feels really nice as well - more like a harder silicone, still very smooth and soft to the touch. By contrast the 95A TPU that I normally use feels harder and not as smooth. It's expensive but definitely worth it!