Toto spares, Toto parts, Toto spare parts, Spare code no : TT2105 - Foaming cap, Based on that, here...

Toto spares, Toto parts, Toto spare parts, Spare code no : TT2105 - Foaming cap,

Based on that, here is what can be inferred about TT2105 (Foaming Cap), what you should check, and how to identify the correct replacement.

What a Foaming / Foam Cap Does in Faucets

A “foaming cap” or “foam cap” is the aerator insert or device that mixes air with water at the outlet of a faucet to produce a smooth, aerated (bubbled) flow rather than a full solid stream. Some key points:

  • It typically sits at the mouth (tip) of the faucet spout (or in the spout’s end fitting).

  • It contains internal mesh / honeycomb / media that force the water to entrain air, reducing splashing and lowering perceived flow while maintaining comfortable pressure.

  • The “cap” nomenclature suggests it is screwed or fitted into the end of the spout (often removable for cleaning or replacement).

  • It may have a specific thread (or size) and seating gasket to seal properly.

In the case of TOTO’s THYB68‑1, the foam cap has:

  • A thread diameter of M24
  • Is made of brass material (as per listing)

So, TT2105 is likely similar in concept, but for a different faucet series or design.

What to Determine / Measure to Get the Correct TT2105 or Equivalent

Be…

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