By material
What changes once filled
- Durometer — inorganic fillers raise it. Confirm the required durometer (e.g. PTFE Shore D 65+, ETFE 67–70D) after filling.
- Tolerance — filled resins extrude slightly less stably, so ±0.025 mm is reviewed per size. ±0.03 mm is usually fine.
- Surface — higher loading can roughen it. If you need “no bumps or roughness”, filler type and loading are tuned together.
- Documents — check that the MSDS covers the filler and that biocompatibility data refers to the filled grade.
In an inquiry, give material · filler type · loading (or target visibility) · required durometer · tolerance · dimensions · annual volume. If you only need local visibility, a marker band without filled resin can be more economical.