Flexible Series

FilamentBay™ TPU 98A

Firm flexible for footwear and structural parts

Illustrative product image; selected Black. Exact color photo unavailable.

Flexible Series · TPU 98A

FilamentBay™ TPU 98A

Firm flexible for footwear and structural parts

Suggested uses Shoe midsoles · Lattice cushioning

Feeder: External spool · Review printer limits

$24.99 USD / 1 kg spool · 1.75 mm

Standard order · availability checked below

Stock confirmation required

Color: Black10 colors

Color and spool size

SKU FB-TPU-98A-BLA-1K HEX #111111

No payment is taken here. We confirm availability and send a payment link within one business day.

4+ spools ≈ $21.99 each · 12% off any mix, applied automatically.

Check your setup

External spool. Print from the external spool holder. Bambu Lab excludes 95A and softer from the AMS lite, and advises against flexible material in the full-size AMS.

Grade sources and evidence limits · Printing settings

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Saved materials & my printer

Set your printer to review material and feeder limits.

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Features

Firm flexible for footwear and structural parts

A firmer TPU that still deforms under force and recovers its shape. Evaluate geometry and process on a sample before selecting it for lattices or other flexible structures; a validated comparative speed limit is not published.

Typical catalog values are not finished-part design allowables. Test method, conditioning, specimen orientation and batch acceptance limits require confirmation. Source and evidence status.

Best for

Properties

TPU 98A application illustration 1 — Shoe midsoles — application illustration, not a validated print sample.

TPU 98A application illustration 2 — Lattice cushioning — application illustration, not a validated print sample.

TPU 98A application illustration 3 — Belts and pulleys — application illustration, not a validated print sample.

Technical specifications

Printing settings & presets

Temperature, drying and printer setup

Nozzle220–240 °C

Bed30–60 °C

Max speedNot verified

Drying suggestion55 °C · 4 h

Extruder adviceCheck extruder and feed path

AMSExternal spool

Dry before printing if the bag has been open more than a few days: 55 °C · 4 h. See the drying guide.

Download starting presets & worksheets

Starting settings

Generated from available catalog values; validate on your printer. Target versions and calibration steps.

Bambu StudioStarting preset OrcaSlicerStarting preset PrusaSlicerStarting preset

Where 98A sits on the ladder

TPU Hub

Feel descriptions are informal analogies. Wall thickness and infill change behavior; these are application ideas, not measured part results.

85A Feels like: Running-shoe sole Folds flat, springs back Shop 85A

90A Feels like: Bicycle inner tube Bends easily, firm rebound Shop 90A

95A Feels like: Shopping-cart wheel Bends, does not squish Shop 95A

98A Feels like: Tyre tread Flexes in thin walls You are here

72D Feels like: Hard hat Rigid, tough, wear-resistant Shop 72D

Material properties

Supplier values & measurement limits

Mechanical properties
Tensile strength (MPa)	30 ± 3
Elongation at break (%)	> 800
Shore hardness	98A

Physical properties
Density (g/cm³)	1.7
Melt flow index (g/10 min)	32 ± 5
Heat deflection temperature (°C)	36 ± 2

Spool & filament
Diameter tolerance	± 0.02 mm
Net weight	1 kg (0.25–5 kg available)
Spool outer diameter	200 mm
Spool width	65 mm
Spool hub	54 mm
Empty spool weight	160 g

Ultraline company brochure, PDF page 25. Typical catalog values are not finished-part design allowables. Test method, conditioning, specimen orientation and batch acceptance limits require confirmation. The source does not identify a specimen process, ISO method, HDT load or MFI temperature/load. View this grade's evidence status.

Buy more, pay less per spool

Any 4+ spools of any FilamentBay material take 12% off automatically. From 50 spools a month, the Print Farm program prices per kilogram.

Print Farm pricing

Quantity	Price per spool
1–3	$24.99
4+	≈ $21.99 (discount rounded on subtotal)
50+ / month	Per-kg ladder

Frequently asked questions

How fast can I print 98A?

A validated speed limit is not published. Start from a known-working printer baseline and a small test, then evaluate extrusion and layer bonding as you adjust one variable.

What does 98A mean?

Shore A hardness. 98A is close to a hard rubber tyre tread: it flexes in thin sections and stays firm in thick ones.

Do I need to dry it before printing?

Popping and stringing can have several causes. Check moisture and print conditions separately. The listed drying values are supplier suggestions, not verified endpoints; confirm the grade, spool and dryer limits before heating. See the drying guide for a controlled workflow.

Downloads

Bambu Studio profile Generated starting values for TPU 98A; printer validation not published. Starting preset

OrcaSlicer profile Generated starting values for TPU 98A; printer validation not published. Starting preset

PrusaSlicer profile Generated starting values for TPU 98A; printer validation not published. Starting preset

Technical data sheet Ask whether grade-specific test conditions and a batch report are available. Request TDS

Material comparison All grades with price, settings, supplier properties and explicit evidence gaps. Open guide

All profiles Formats, validation status, target versions and calibration steps. Profiles page

Related guides

All guides

How to print TPU without stringing or jams

Step-by-step TPU settings for direct-drive and Bowden printers: temperature, speed, retraction, drying and bed prep.

4 min read

FilamentBay™ TPU 98A

Check your setup

Firm flexible for footwear and structural parts

Printing settings & presets

Where 98A sits on the ladder

Material properties

Buy more, pay less per spool

Frequently asked questions

Downloads

Related guides

How to print TPU without stringing or jams

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