TPU 98A · 1.75 MM ±0.03 · SHORE 98A
Flexible, not vague: Shore 98A with the fullest settings row we sell.
$15.99 (multi-packs to $89.99) on Amazon US
Flexible filament has a reputation for guesswork, so TPU 98A ships with the most complete verified settings row in the CHCKX catalog: Shore 98A, nozzle 210 to 230 °C, bed 0 to 35 °C, speed 30 to 100 mm/s, and a drying schedule of 5 to 8 hours at 60 °C before use. No folklore, just the numbers on the page.
The 98A hardness is the practical sweet spot: soft enough for gaskets, bumpers, and phone-case flex, firm enough to feed through a stock extruder without spaghetti. Fourteen colors cover it, including a Transparent that prints into genuinely useful seals and light covers.
COLOR LIBRARY
Color names are shown in English as listed on Amazon.
THE DATASHEET
| Property | Value |
|---|---|
| Diameter | 1.75 mm |
| Tolerance | ±0.03 mm |
| Shore hardness | 98A |
| Nozzle temp | 210–230 °C |
| Bed temp | 0–35 °C |
| Print speed | 30–100 mm/s |
| Drying | 5–8 h @ 60 °C before use |
| Density | ~1.21 g/cm³ ⓘ |
Values shown are representative for this material class. Final figures come from the manufacturer's datasheet. Request the TDS for batch-specific data.
ⓘ = Industry-representative value
PRINT SETTINGS
98A
Shore hardness
210–230 °C
Nozzle temp
0–35 °C
Bed temp
30–100 mm/s
Print speed
5–8 h @ 60 °C before use
Drying
USE-CASE GUIDANCE
Direct-drive extruders print TPU happiest. On Bowden setups, slow to the bottom of the 30 to 100 mm/s range and shorten retractions until stringing settles. The strand is a spring: the shorter and more constrained the filament path, the better.
See PCTGTPU drinks moisture faster than any rigid filament, and wet TPU bubbles at the nozzle. The verified schedule is 5 to 8 hours at 60 °C before use. Spools arrive dried and vacuum-sealed with desiccant; once opened, plan on re-drying before long jobs.
See PETGInfill percentage becomes a hardness dial in TPU: 20% prints a squishy bumper, 80% a firm wheel. Print seals as single-wall spirals where you can, and let the Shore 98A base do the sealing.
See PLAPrint tips
THE HONEST BIT
Every material has a job. Here is where this one belongs, and where it does not.
Best for
Not ideal for
FAQ
Like a skateboard wheel or a stiff shoe sole. It bends and rebounds, but a thick part still feels solid in the hand. Softer than 95A gel-type TPUs, firmer than a silicone band.
98A is on the firm side, which is exactly why we stock it: it feeds through Bowden setups that softer TPUs defeat. Print at the slow end of the speed range and tune retraction down.
TPU bonds aggressively to build surfaces. A cool bed protects your sheet and your part; heat is only there to help the first layer settle, not to hold the print down.
Translucent-clear in thin walls, frosted in thick sections, like every flexible on the market. Printed slowly and dry, single-wall parts pass enough light for seals, covers, and diffusers.
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