The substitution question
Substitution is not a simple same-name swap: you must match the base resin, filler, heat and compliance. We map imported grades to domestic equivalents by duty and document the comparison.
What we cross-reference
PEEK / PI
High-temp structural and semiconductor grades
POM / PA
Wear and geared parts
MC尼龙 / UHMW
Bushings, liners, slides
PTFE / PVDF
Chemical and pure-fluid duty
How we qualify a substitute
| Step | Action |
|---|---|
| 1. Duty review | Temperature, chemical, load, compliance |
| 2. Grade map | Match base resin + filler + modifier |
| 3. Sample & test | Dimensional, physical, fit check |
| 4. Documents | Cross-ref sheet + compliance file |
Note on brands
Brand names refer to original stock shapes for identification only; Teresi supplies equivalent domestic material, not the original trademarked product.
Frequently asked questions
Can you replace an Ensinger grade?
We map it to an equivalent domestic grade by duty and provide a cross-reference sheet; equivalency depends on the specific property set.
Is substitution safe for food/medical?
Only via graded, documented material with the required compliance file for your market.
What do you need to start?
The original grade/trademark, drawing and duty (temp, chemical, load, compliance).