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PBT keycaps

PBT keycap sets: matte texture, fade-resistant, deeper sound. PBTfans, ePBT, KBDfans, Akko, Keychron OEM. Compare profile, legend method and price.

62 keycaps · $20–$60

PBT is the harder, more heat-resistant of the two plastics keycaps are moulded from. It stays matte instead of developing the greasy shine ABS picks up after a year or two, tolerates the heat that dye-sublimation needs, and sounds slightly deeper and drier under the finger.

Sixty-two of the seventy-one keycap sets we track are PBT, which sounds like PBT has won. Read the brand column before you conclude that: thirty-nine of those sixty-two are Lofree, and Lofree's sets are cut for its own low-profile boards. If you are shopping for a standard MX keyboard, the real shelf here is twenty-three sets, not sixty-two.

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The Lofree problem, stated plainly

Lofree ships three in-house profiles — Touch (28 sets), Flow (8) and Edge (3). Touch is a 17.5 mm sculpted profile for Lofree's full-height boards; Flow at 6.3 mm and Edge at 5 mm are low-profile and will not fit a standard MX switch at all. They are beautiful sets, many of them among the most interesting designs on the site, and they are useless on a Keychron Q1.

So filter before you browse. The PBT sets that fit a normal hot-swap board are the thirteen in Cherry profile, the seven in OEM, and three one-off profiles (KAT, MOA, XDA). Everything else on this page is a Lofree accessory in disguise.

What PBT actually buys you

Two things, and one of them is oversold.

The real one is wear. ABS legends and surfaces polish to a shine under the fingers you use most, so a two-year-old ABS set has visibly glossy WASD and spacebar. PBT resists it. On a board you type on daily, that is the difference between a set that ages and one that does not.

The oversold one is sound. PBT is described everywhere as "thockier". It is a smaller effect than the internet suggests, and it is swamped by the case, the plate, the mounting style and whether the board has foam. If you want a deeper sound, changing the mounting style will do far more than changing the plastic.

Thickness is the spec that would settle it, and we have a measured figure for only six of the sixty-two sets — 1.50 to 1.80 mm, median 1.55. Thicker caps do sound fuller, but published thickness is rare enough across this market that it is not a reliable filter.

Legends and backlight

Fifty-one of the sixty-two are dye-sub and nine are doubleshot. That skew has a consequence people discover after buying: only ten of the sixty-two PBT sets are shine-through. Dye-sublimation puts colour into the plastic, and opaque plastic blocks light. If your board's RGB is a feature rather than an accident, start from the doubleshot page instead of here.

Frequently asked

Is PBT better than ABS?
For durability, yes, and it is not close. For sound and feel, the honest answer is that the difference is real but small, and every other component of the board matters more. See [ABS](/keycaps/abs) for the case in its favour — there is one.
Does PBT warp?
Thin PBT can bow slightly, most visibly on long keys like the spacebar, because the plastic shrinks unevenly as it cools. It is a manufacturing-quality issue rather than a property of the material, and it shows up on cheap sets from any material.

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