TPE profiles vs. rubber profiles – which is better?
There is no absolute "better". The choice depends on operating temperature, sealing requirements, chemical exposure, production budget and sustainability goals.
| Item | TPE Profiles | Conventional Rubber Profiles (EPDM) |
| Processing | No vulcanization. fast continuous extrusion. scrap/regrind recyclable. co‑extrusion hard+soft possible | Needs vulcanization/curing. slower batch process. scrap hardly recyclable. co‑extrusion limited. |
| Dimensional accuracy | High, tight tolerance | Moderate, shrinkage after curing |
| Temperature range | ‑40℃ ~ +135℃ (continuous) | ‑55℃ ~ +120℃; silicone rubber up to 200℃ |
| Compression set | Moderate‑Good; permanent deformation risk under long‑term high‑pressure hot clamping | Excellent. better shape recovery under sustained compression |
| UV / Ozone aging | Excellent, color retention good | Good, risk of chalking， yellowing over long outdoor service |
| Chemical / oil resistance | Moderate‑good for general fluids; poor for strong solvents | EPDM good for water/weather. NBR/silicone for oil & high‑temp |
Advantages of TPE Profiles :
Production efficiency: No vulcanization, faster extrusion, lower scrap loss; leftover material can be recycled in‑house.
Multi‑material co‑extrusion: Can bond directly with PP / PE rigid substrate for composite seal profiles, ideal for window, door, automotive interior trims.
Consistent dimension & colour: Stable extrusion output, less batch‑to‑batch variation.
Eco‑friendly: RoHS, REACH, food‑contact grades widely available; fits circular‑economy requirements.
TPE profiles application :
Architectural window & door sealing strips
Automotive interior weather‑strip, decorative trim
Consumer equipment, light‑duty sealing
Projects requiring co‑extrusion, multi‑color parts, waste recycling
Advantages of Rubber Profiles (EPDM / NBR / Silicone)
Superior compression recovery: Less permanent deformation under long‑term heavy compression, critical for static sealing with constant clamping force.
Broader temperature limits: Silicone rubber works reliably above 150℃ and down to‑60℃, for engine‑bay high‑heat conditions.
Better resistance to oil, fuel, strong solvents (select rubber grades like NBR, FKM).
Superb long‑term dynamic fatigue performance under heavy cyclic load.
Rubber profiles application :
High‑temperature engine‑bay gaskets
Heavy‑duty industrial static seals under constant compression
Oil / solvent exposed environment
Extreme cold climates below‑40℃
Choose TPE Profiles ：
You need fast delivery, co‑extrusion composite structure, recyclable material, general outdoor weathering, medium‑low compression load, cost‑effective mass production.
Choose Rubber Profiles ：
Application faces continuous high‑temperature (>135℃), heavy permanent clamping compression, oil/solvent exposure, extreme low‑temperature environment.
Note: High‑grade TPV (Santoprene‑type) narrows many performance gaps vs EPDM, but still cannot fully match cross‑linked rubber on compression‑set under long‑term hot compression.
There is no absolute "superiority" or "inferiority" between TPE profiles and rubber profiles; only the optimal solution for specific application scenarios. Leveraging years of experience in extrusion profile R&D and production, our company boasts a complete product system encompassing high-precision TPE/TPV profiles and multiple series of rubber profiles (EPDM, NBR, silicone). We can provide one-stop customized material selection, structural design, and precision extrusion production services based on our clients' actual working conditions, budgets, and certification requirements.
In the future, we will continue to focus on materials technology innovation, optimizing product performance and production processes to provide global customers with more efficient, environmentally friendly and economical profile solutions, helping them enhance product competitiveness and market adaptability.
