Silicone Rubber
Silicone rubber is a versatile and high-performance elastomer widely used in various industries due to its excellent thermal stability, flexibility, and resistance to extreme conditions. Our premium-grade Silicone Rubber products are designed to meet the highest industry standards, making them ideal for applications ranging from automotive components to medical devices.
Key Features of Silicone Rubber
- Temperature Resistance: Withstands temperatures ranging from -60°C to 230°C (-76°F to 446°F)
- Chemical Resistance: Excellent resistance to oils, acids, and alkalis
- Electrical Insulation: High dielectric strength for electrical applications
- UV and Ozone Resistance: Maintains properties under prolonged exposure
- Flexibility: Retains elasticity across wide temperature ranges
- Biocompatibility: Medical-grade options available for healthcare applications
Silicone Rubber Technical Specifications
| Property | Value | Test Method |
|---|---|---|
| Hardness (Shore A) | 20-80 | ASTM D2240 |
| Tensile Strength | 500-1200 psi | ASTM D412 |
| Elongation at Break | 100-800% | ASTM D412 |
| Tear Strength | 20-50 kN/m | ASTM D624 |
| Specific Gravity | 1.1-1.3 | ASTM D792 |
| Volume Resistivity | 10^14 - 10^15 Ω·cm | ASTM D257 |
Silicone Rubber Applications
- Automotive: Gaskets, seals, vibration dampers, and hoses
- Medical: Tubing, implants, and surgical instruments
- Electronics: Keypads, connectors, and insulation
- Industrial: Molding pads, rollers, and conveyor belts
- Consumer Products: Kitchenware, baby products, and sporting goods
Silicone Rubber FAQ
Q: What is the maximum temperature Silicone Rubber can withstand?
A: High-temperature Silicone Rubber formulations can continuously withstand temperatures up to 230°C (446°F), with some specialty grades handling short-term exposure to 300°C (572°F). The exact temperature resistance depends on the specific compound and duration of exposure.
Q: How does Silicone Rubber compare to natural rubber in outdoor applications?
A: Silicone Rubber significantly outperforms natural rubber in outdoor applications due to its superior UV and ozone resistance. While natural rubber degrades quickly when exposed to sunlight and atmospheric ozone, Silicone Rubber maintains its properties for years without significant deterioration.
Q: Is Silicone Rubber safe for food contact applications?
A: Yes, FDA-approved food-grade Silicone Rubber is completely safe for food contact applications. It doesn't leach harmful chemicals, is odorless and tasteless, and can withstand repeated sterilization processes. Always verify that the specific Silicone Rubber product is certified for food contact.
Custom Silicone Rubber Solutions
Our engineering team can develop custom Silicone Rubber formulations to meet your specific requirements. Whether you need enhanced chemical resistance, specialized hardness, or unique color options, we can create a solution tailored to your application. Our Silicone Rubber products are available in various forms including sheets, rolls, molded parts, and extruded profiles to suit your manufacturing needs.
Silicone Rubber Processing Methods
- Compression Molding: Ideal for medium to high volume production of precision parts
- Injection Molding: Best for complex geometries and high-volume production
- Extrusion: Perfect for creating continuous profiles like tubing and seals
- Calendering: Used for producing thin sheets and films
- Liquid Silicone Rubber (LSR) Injection: For high-precision medical and electronic components
Silicone Rubber VS Other Elastomers
| Property | Silicone Rubber | Natural Rubber | EPDM | Neoprene |
|---|---|---|---|---|
| Temperature Range | -60°C to 230°C | -50°C to 80°C | -50°C to 150°C | -40°C to 120°C |
| Weather Resistance | Excellent | Poor | Good | Good |
| Chemical Resistance | Very Good | Fair | Good | Excellent |
| Electrical Properties | Excellent | Good | Fair | Fair |
| Cost | High | Low | Medium | Medium |
Silicone Rubber FAQ
Q: How long does Silicone Rubber last compared to other elastomers?
A: Silicone Rubber typically has a significantly longer service life than most other elastomers, especially in demanding environments. While natural rubber might last 5-10 years in ideal conditions, Silicone Rubber can often maintain its properties for 20+ years, particularly when protected from mechanical abrasion.
Q: Can Silicone Rubber be recycled?
A: Yes, Silicone Rubber can be recycled through specialized processes. The material can be ground into powder and reused as filler, or through more advanced processes, it can be depolymerized back to its base components. However, recycling infrastructure for Silicone Rubber is less common than for some other plastics.
Q: How do I choose the right hardness for my Silicone Rubber application?
A: The ideal hardness depends on your specific requirements. Softer Silicone Rubber (20-40 Shore A) is best for seals and gaskets needing good compression, while medium hardness (40-60 Shore A) works well for most general applications. Harder grades (60-80 Shore A) are used for structural components requiring dimensional stability.
Silicone Rubber Certifications and Standards
- FDA 21 CFR 177.2600 (Food Grade)
- USP Class VI (Medical Grade)
- ISO 10993 (Biocompatibility)
- UL 94 V-0 (Flame Retardant)
- ROHS & REACH Compliant
- NSF 51 (Food Equipment Materials)
Silicone Rubber Storage and Handling
To maintain optimal properties, store Silicone Rubber products in a cool, dry place away from direct sunlight and ozone sources. Ideal storage temperature is between 10°C and 25°C (50°F and 77°F) with relative humidity below 65%. Avoid contact with sharp objects that might cause cuts or nicks in the material. When stored properly, Silicone Rubber typically has a shelf life of 5 years from date of manufacture.
Silicone Rubber FAQ
Q: What causes Silicone Rubber to degrade or fail prematurely?
A: The most common causes of premature Silicone Rubber failure include exposure to certain solvents (like concentrated acids or alkalis), excessive mechanical stress beyond design limits, sharp object damage, and extreme temperatures beyond the material's rating. Choosing the right formulation for your specific environment is crucial for maximum lifespan.
Q: How can I improve the adhesion of Silicone Rubber to other materials?
A> Improving Silicone Rubber adhesion requires surface preparation techniques like plasma treatment, chemical primers, or mechanical abrasion. For bonding to metals, specialized Silicone Rubber adhesives are available. The substrate material and application requirements will determine the best adhesion method.
Q: What's the difference between solid Silicone Rubber and Liquid Silicone Rubber (LSR)?
A> Solid Silicone Rubber comes in pre-formed sheets or molded parts, while LSR is a two-component liquid that's injection molded. LSR offers superior precision for complex parts and better consistency for medical applications, while solid Silicone Rubber is often more cost-effective for simpler shapes and lower volumes.