When it comes to gasket materials, two of the most popular options are EPDM rubber gaskets and silicone gaskets. Both have unique properties, price points, and ideal uses. In this guide, we’ll compare EPDM vs silicone gaskets so you can make the right choice for your project.

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1. What is EPDM Rubber?

EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber known for excellent resistance to:

• Weathering – UV, ozone, and oxidation
• Water and steam
• Mild chemicals and alcohols

💡 Best for: Outdoor seals, automotive parts, and water-based applications.

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2. What is Silicone Rubber?

Silicone (VMQ) is a high-performance elastomer that excels in extreme temperature conditions:

• Heat resistance from -50°C to +200°C
• FDA-grade food-safe options
• Excellent flexibility in both hot and cold environments

💡 Best for: Food and beverage industry, medical seals, high-temperature machinery.

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3. Key Differences – EPDM vs Silicone

Property	EPDM Gasket	Silicone Gasket
Temperature Range	-40°C to +120°C	-50°C to +200°C
Weather Resistance	Excellent	Excellent
Chemical Resistance	Good (water-based)	Good (oils, fats, mild chemicals)
Food Safe Options	Limited	FDA-approved grades available
Cost	Generally lower	Higher due to premium material
Elasticity in Cold	Good	Excellent

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4. Which Should You Choose?

• Choose EPDM if you need affordable, durable gaskets for outdoor, water, or steam applications.
• Choose Silicone if you need food-grade, medical-safe, or extreme temperature resistance.

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5. EPDM & Silicone Gaskets in Stock – Order Now

At CSMADE, we stock EPDM gaskets and silicone gaskets in various thicknesses and sizes. We also offer custom CNC-cut gaskets to your exact design.

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