EPDM (Ethylene Propylene Diene Rubber) vs Silicone Rubber (VMQ/HTV): 0% composition overlap. Significantly different materials serving different application areas.
EPDM (Ethylene Propylene Diene Rubber) vs Silicone Rubber (VMQ/HTV)
Side-by-side chemical composition and mechanical property comparison.
Overview
EPDM (Ethylene Propylene Diene Rubber)
Ethylene propylene diene monomer rubber — THE outdoor/weather elastomer. Saturated backbone gives outstanding ozone, UV, and weathering resistance. Excellent resistance to steam, hot water, and polar solvents. NOT resistant to oils/fuels (opposite of NBR). Good electrical insulation. ρ 0.85-1.3 (lightest common rubber). Used for automotive door/window seals, roofing membranes, radiator hoses, HVAC gaskets, and pond liners.
Silicone Rubber (VMQ/HTV)
Silicone rubber (VMQ = Vinyl Methyl Polysiloxane) — THE extreme-temperature elastomer. Usable from -60°C to +230°C continuous (short-term +300°C). Excellent UV/ozone/weathering resistance. Biocompatible (FDA, USP Class VI). Low compression set. Electrically insulating. Lower tensile/tear strength than organic rubbers. Used for seals/gaskets, medical tubing/implants, food-grade components, baby products, automotive ignition boots, and LED/lighting encapsulation.
| EPDM (Ethylene Propylene Diene Rubber) | Silicone Rubber (VMQ/HTV) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 37 |
Mechanical properties
| Property | EPDM (Ethylene Propylene Diene Rubber) | Silicone Rubber (VMQ/HTV) | Unit |
|---|---|---|---|
| tensile_strength | 7–21 | 6–12 | MPa |
| elongation | 100–700 | 200–600 | % |
| hardness_shore_a | 30–90 | 30–80 | Shore A |
Compatibility Assessment
EPDM (Ethylene Propylene Diene Rubber) and Silicone Rubber (VMQ/HTV) have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EPDM (Ethylene Propylene Diene Rubber) the same as Silicone Rubber (VMQ/HTV)?
EPDM (Ethylene Propylene Diene Rubber) and Silicone Rubber (VMQ/HTV) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace EPDM (Ethylene Propylene Diene Rubber) with Silicone Rubber (VMQ/HTV)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EPDM (Ethylene Propylene Diene Rubber) and Silicone Rubber (VMQ/HTV)?
The main differences are in the following elements: overall alloying content. EPDM (Ethylene Propylene Diene Rubber) is a Polymers grade, while Silicone Rubber (VMQ/HTV) is a Polymers grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.