Comparing EPDM vs. Neoprene: Which is Best for Your Application?

Understanding the Technical Differences: EPDM Foam Rubber Tape vs. Neoprene Blended SBR Foam Tape

In the world of sealing, insulation, and cushioning applications, foam rubber tapes play a crucial role. When choosing the right material for your project, understanding the differences between EPDM (ethylene propylene diene monomer) foam rubber tape and Neoprene (chloroprene) blended SBR (styrene-butadiene rubber) foam tape is essential. In this blog post, we'll explore the technical distinctions between these two types of foam tapes and offer guidance on their applications.

EPDM Foam Rubber Tape

Technical Characteristics

1. Composition: EPDM rubber is a synthetic rubber known for its excellent resistance to weathering, ozone, UV, and aging. The foam form of EPDM maintains these properties while offering cushioning and sealing capabilities.
2. Temperature Range: EPDM foam can withstand a broad temperature range, typically from -57°C to 104°C (-70°F to 220°F), making it ideal for both hot and cold environments.
3. Chemical Resistance: EPDM is highly resistant to many chemicals, including acids, alkalies, and ketones, but it is not suitable for environments with petroleum-based products.
4. Water Absorption: It has low water absorption, providing effective water sealing properties.

Applications and Project Guidance

EPDM foam rubber tape is well-suited for outdoor and automotive applications due to its excellent resistance to environmental factors. Use it for:

• Sealing in automotive and HVAC systems.
• Weatherstripping doors and windows.
• Roofing and other outdoor constructions.
• Cushioning in vibration-sensitive areas.

Consider EPDM if your project requires durable, weather-resistant material, especially in environments exposed to the elements.

Neoprene Blended SBR Foam Tape

Technical Characteristics

1. Composition: Neoprene, when blended with SBR, combines the flexibility and durability of neoprene with the cost-effectiveness of SBR. This creates a versatile foam suitable for various applications.
2. UL 94 Fire Rated: Pres-On's neoprene foam has additives that make the foam tape UL 94 Fire compliant, not all our our EPDM foam has the same additive (P93 does not, P92 does). 
3. Temperature Range: This blend typically handles temperatures from -40°C to 121°C (-40°F to 250°F).
4. Chemical Resistance: Neoprene offers moderate resistance to oils and petroleum products, outperforming EPDM in oil resistance but falling short in ozone and UV stability.
5. Compression Set: Neoprene blended with SBR provides good resistance to compression set, maintaining its shape and function under pressure.

Applications and Project Guidance

Neoprene blended SBR foam tape is ideal for applications where moderate oil resistance is required. It finds usage in:

• Drywall installation
• Marine and aquatic environments, due to its moderate oil resistance.
• Industrial settings for gasketing and sealing.
• Shop floors for anti-fatigue pads and cushioning.
• Indoor applications where UV and ozone exposure are minimal.

Opt for Neoprene SBR foam tape when you need a balance between cost and performance in less harsh environmental conditions.

Final Note

Selecting the right foam tape hinges on understanding the environmental conditions of your application. EPDM foam rubber tape is your go-to for outdoor, high-weather-exposure projects, offering superior resistance to UV, ozone, and temperature extremes. On the other hand, Neoprene blended SBR suits indoor applications or areas with moderate exposure to oils and chemicals, presenting a cost-effective solution.

Balancing these considerations will help ensure long-lasting and effective results in your sealing and cushioning projects, aligning with both budget and performance needs.