A torn or worn mouthpiece creates a precise parts question. Start with the equipment that holds the mouthpiece. Write down the breathing assembly model and any revision or part number you can read. A picture of the old silicone alone rarely provides enough information for the person identifying the part.
Separate the material from the fit
The TRIMIX Silicone Mouthpiece listing describes one black silicone mouthpiece and asks buyers to confirm its connection style and fit with their breathing assembly. Silicone describes the material. Fit also depends on the interface between the replacement and the equipment that retains it. A photograph can help identify the shape, but written compatibility for the exact assembly is the useful purchasing record.
For a T-500 under consideration, the T-500 user manual provides model context and describes the breathing assembly. Use the model and information on the actual unit alongside the manual when asking for support. If the regulator or any related component was changed after the original purchase, identify the part you have now.
Prepare a parts request someone can answer
- Record the tank model, the breathing assembly identifier and any known replacement history.
- Supply a clear photo of the identification markings and the assembled interface. Ask support which additional evidence it needs.
- Request the mouthpiece part number and the documented compatible assembly or revision.
- Ask which retaining parts are included, which separate parts are specified and which provider is responsible for the work.
The standalone catalogue entry names the mouthpiece as the package item. If the response names a clamp, tie or other retaining part, ask for its separate identification and whether it is supplied with the mouthpiece. A complete answer tells the service provider which parts and documents belong to that equipment. Set damaged equipment aside while the correct replacement is identified and qualified service is arranged.
Save the identification for the next order
Keep the part number and the assembly revision together in your equipment records after the match is confirmed. That gives a dive shop or future owner a clearer starting point if the part needs replacement again.
Ask TRIMIX to identify a replacement mouthpiece for the assembly you own and request a written confirmation of fit, included parts and service responsibility.
Evergreen buying guide checked November 11, 2026. The mouthpiece listing carries October 15, 2026 publication metadata. The T-500 manual is undated.
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