🧩 TPE-V – Vulcanized Elastomer (EPDM + PP)
(Thermoplastic Vulcanizate (TPV), obtained through a dynamic blend of EPDM rubber and PP (polypropylene). It behaves like elastic rubber but can be melted and welded — the ideal combination of rubber and thermoplastic.)
🔹 What is TPE-V
TPE-V (Thermoplastic Vulcanizate), commonly known as TPV, features fine EPDM rubber particles vulcanized within a PP matrix. At ReplastMD, we consider TPV the superior choice for weather-exposed parts, as it offers better thermal and chemical resistance than TPE-S. It provides long-lasting elasticity while remaining fully weldable and recyclable.
🔧 Composition & Properties
- Elastic Phase: EPDM (50–70 %) — vulcanized rubber.
- Thermoplastic Matrix: PP (30–50 %) — Polypropylene.
- Density: 0.9 – 1.1 g/cm³.
- Melting Point: 180 – 220 °C.
- Continuous Operating Temp: –40 °C to +130 °C.
- Chemical Resistance: Very good (oils, detergents, diluted acids).
🚗 Where TPE-V is used in the automotive industry
| Component | Example parts | Observations |
| Gaskets & Seals | Doors, trunk, headlights | Elastic, UV stable, perfect seal |
| Boots / Bellows | Steering, brake boots, guards | Resistance to oil and cold |
| Grips / Covers | Door handles, interior controls | Soft-touch, anti-slip surface |
| Anti-vibration | Mounts, buffers, gaskets | Excellent resistance to mechanical fatigue |
🔧 Welding Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 240 – 260 °C | Clean, flexible weld |
| Heat Plate (Mirror) | 230 – 250 °C | Smooth bond, bubble-free |
| Manual Extrusion | 240 – 260 °C | Use compatible TPE-V or PP rods |
| Ultrasonic | — | Possible for thin-walled parts |
🔩 Material Compatibility
- ✅ Compatible: TPE-V (same type), PP, TPO, TPE-O.
- ⚠️ Partial: TPE-S, TPE-E, TPE-U (medium compatibility).
- ❌ Incompatible: PA, PC, POM, PET, PVC (different polarities).
💡 ReplastMD Recommendation: Weld TPE-V at 250 °C with compatible TPE-V or PP rods. Maintain constant pressure and ensure slow cooling to prevent the separation of EPDM/PP phases.
🧠 How to Identify TPE-V
- Matte, soft, rubbery texture.
- High elasticity with a slightly slower recovery than pure vulcanized rubber.
- ReplastMD practical test: Softens at 200–220 °C without sudden melting, emitting a faint rubbery scent.
- Common markings: >TPE-V<, >TPV<, >SANTOPRENE<, >SARLINK<.
🛠️ TPE-V Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we provide professional welding for TPE-V / Santoprene® components. Using precise hot air control, we ensure an elastic, oil-resistant joint — plastic as good as new.