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3D printing in flexible TPU

TPU is 3D printing's rubber: gaskets, bumpers, covers, bellows and soft wheels, which bend and return without breaking. Price per gram and an example priced by our quote engine.

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TPU bends, squashes and returns: it is the only material in the catalog for a gasket, a bumper, a protective cover or a wheel that grips. It prints more slowly than PLA and costs more per gram, and it does not replace a rigid part; for that, PETG. Drop the file on the online quote and choose TPU: the price shows in a few seconds.

The prices, colours and ratings quoted on this page are read from our catalog and quote engine when the page loads: they are what an order pays today.

What gets printed in TPU

  • Flat gaskets and O-rings, plugs and caps that fit with no play.
  • Bumpers, feet and dampers: under a device, between two vibrating parts, at the end of an arm.
  • Soft covers and caps for enclosures, cable grommets and bellows.
  • Wheels and treads for robots, trolleys and toys, model tyres.
  • Spare parts in rubber that no longer exist: feet, hood seals, end caps, low-load belts.

Its properties

Our TPU is medium hardness, comparable to a shoe sole: soft in the hand, firm under load. It resists abrasion, oils and repeated impacts better than any rigid material.

The catalog's ratings, out of 10
PropertyRating
Mechanical strength7/10
Flexibility9/10
Heat resistance6/10
  • Heat: stays flexible from freezing to about 80 °C; beyond that, it softens.
  • UV and outdoors: lasts several seasons outside; a permanently exposed part eventually hardens a little.
  • Water and chemicals: unaffected by water, oils and greases; solvents swell it.
  • Automotive: yes for seals, grommets, bumpers and guards away from engine heat.

What a TPU part costs

  • 0.40 MAD per gram deposited, density 1.22 g/cm³: at equal volume, it is the weight that changes from one material to the next.
  • In stock today: TPU 95A – Light Green.
  • An electronics case of 54 g, 4 h 33 of printing, costs 353.80 MAD delivered in TPU, against 178.42 MAD in PLA (+98%).

These figures are read from the catalog and computed by our quote engine when this page loads; every order costs at least 105.00 MAD delivered. The exact price of your part shows on the online quote, and the guide How much does 3D printing cost in Morocco explains where the price comes from.

Designing for TPU

  • Walls of at least 0.8 mm; a thinner wall prints, but becomes a film rather than a part.
  • Flexibility is designed in: a thin wall bends, a thick wall resists; a bellows or a living hinge needs an even section.
  • Small holes and fine details come out less crisp than in PLA; allow clearance on fits, TPU takes its shape back anyway.
  • No large overhangs without support: TPU holds a cantilever less well than rigid materials.

Help

Questions on this material

How hard is the TPU you print?
Medium hardness, comparable to a shoe sole: the part bends in the hand and returns, but does not squash like foam. State the use in your request if in doubt.
Can a watertight gasket be printed in TPU?
A flat gasket or O-ring compressed between two parts, yes, tight against splashes and low-pressure water. Not a gasket under pressure or an engine seal.
Is TPU more expensive than PLA?
Per gram, yes, and it prints more slowly, so the same part costs more in TPU. The difference is shown above, computed by the quote engine.
When to prefer TPU over PETG?
As soon as the part must bend, damp, grip or fit with no play. If it must hold a shape under load, it is PETG.

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