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.
Applications for TPE profiles :
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.
Applications for rubber profiles ：
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 "better" between TPE profiles and rubber profiles, only the most suitable solution for specific application scenarios. Relying on years of extrusion profile R&D and production experience, our company has a complete product system covering high-precision TPE/TPV profiles and multi-series rubber profiles (EPDM, NBR, silicone). We can provide customers with one-stop customized material selection, structural design and precision extrusion production services according to actual working conditions, budget and certification requirements.
In the future, we will continue to focus on material technology innovation, optimize product performance and production processes, and provide global customers with more efficient, environmentally friendly and cost-effective profile solutions to help customers enhance product competitiveness and market adaptability.
