When you’re tasked with sealing a pump in a salty‑spray environment or need a flexible barrier under a car’s hood, the material you choose can make or break the job. Traditional rubber gaskets crack under UV exposure, while generic silicone sheets often lack the tensile strength needed for heavy‑duty applications. That’s where the **silicone rubber sheet 70A** from Exactly Rubber steps in – a vibrant red, UV‑resistant sheet promising both flexibility and durability.
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Quick Verdict
- Best For
- Industrial gasketing where UV exposure is a factor
- Marine sealing projects that demand salt‑water resistance
- DIY enthusiasts needing an easy‑to‑cut, flexible silicone sheet
- Not Ideal For
- High‑temperature applications above 250 °C (300 °F)
- Projects requiring thickness >0.2 in (5 mm)
- Users needing a clear or translucent gasket
- Core Strengths
- 700 PSI tensile strength measured on a universal testing machine
- 350 % elongation, allowing it to wrap irregular surfaces
- UV and ozone resistance proven after 500 hours of accelerated weathering
- Core Weaknesses
- Limited heat resistance (max 200 °C / 392 °F)
- Thin profile (0.06 in) can tear if over‑stretched
- Red color may not suit aesthetic‑focused projects
Key Takeaways
- Provides a balance of softness (70A) and strength (700 PSI) ideal for most sealing tasks.
- UV/ozone resistance eliminates cracking in outdoor or marine environments.
- Easy to cut with scissors or a utility knife; no adhesives required.
- Setup time averages 5 minutes for a typical 12‑inch gasket.
- Works well on metal, plastic, and wood substrates.
- Thinness (0.06 in) limits load‑bearing applications.
- Not suitable for continuous exposure to temperatures >200 °C.
- Red color offers quick visual identification but may clash with certain designs.
- Price $83.29 positions it between budget and premium silicone sheets.
- Excellent after‑sales support with a hassle‑free return policy.
Product Overview & Official Specifications
Exactly Rubber’s silicone rubber sheet is engineered for demanding environments. The single‑ply silicone‑coated fiberglass construction gives it a firm 70A durometer while retaining high elongation. The sheet’s bright red hue helps technicians locate the material quickly in busy workshop settings.
| Specification | Detail |
|---|---|
| Dimensions (L × W × T) | 36 in × 18 in × 0.06 in |
| Durometer | 70 A |
| Tensile Strength | 700 psi |
| Elongation at Break | 350 % |
| Color | Red |
| UV / Ozone Resistance | Yes (500 h accelerated weathering) |
| Chemical Resistance | Resists oils, acids, alkalies (see data sheet) |
| Operating Temperature Range | -50 °C to 200 °C |
| Material | Silicone‑coated fiberglass |
| Price | $83.29 |
Complete Buying Guide: Who Should (And Shouldn’t) Buy This
Best for DIY Beginners
If you need a straightforward, cut‑to‑size gasket for a home‑brew project, the sheet’s ease of cutting and visual cue make it an excellent starter material.
Best for Enthusiast Builders
Marine hobbyists and automotive modifiers who require UV‑stable sealing will appreciate the sheet’s durability without paying premium prices.
Best for Professional Shops
Industrial maintenance teams that demand consistent tensile performance and reliable weather resistance will find the sheet meets OEM‑level specifications.
ABSOLUTELY NOT RECOMMENDED FOR
- High‑temperature exhaust sealing (>250 °C).
- Applications needing a transparent gasket.
- Projects where thickness >0.1 in is required for load‑bearing.
Frequently Asked Questions
- Can the sheet be used outdoors? Yes – it is UV‑ and ozone‑resistant, making it suitable for outdoor and marine environments.
- What is the maximum temperature it can withstand? The sheet is rated up to 200 °C (392 °F); exceeding this may cause degradation.
- Is adhesive required for bonding? No. The silicone coating adheres well to most substrates without additional adhesives, though a contact adhesive can be used for extra hold.
- How thick is the sheet? Official spec: 0.06 in (1.5 mm).
- Can it be welded or heat‑sealed? Yes, silicone sheets can be heat‑sealed at 150 °C, but the thin profile limits the size of welds.
- Is it resistant to oil and chemicals? It resists most automotive oils, acids, and alkalies; consult the data sheet for specific concentrations.
- What tools are best for cutting? A sharp utility knife or scissors work fine; for precision, a CNC cutter can be employed.
- Does the red color fade over time? After 500 h of UV exposure, color change is less than 2 % and does not affect performance.
Final Conclusion
Exactly Rubber’s **silicone rubber sheet 70A** delivers a solid mix of flexibility, tensile strength, and UV/ozone resistance at a mid‑range price point. For industrial, marine, or automotive sealing tasks that demand reliability without breaking the bank, this sheet is a clear winner. If you need higher temperature tolerance or a thicker profile, consider a premium alternative, but for most everyday sealing projects, this product hits the sweet spot.
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Disclaimer: This content is for informational purposes only. The use of this product and any modifications mentioned should comply with local laws, manufacturer guidelines, and safety regulations. Always consult a professional or official user guides before operating. We are not liable for any damages or losses resulting from the use of this information.
