Nick Pelios Freediver, Creator
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In the world of freediving, where every piece of equipment can mean the difference between a seamless dive and an uncomfortable experience, the materials used in our gear are paramount. Yet, a troubling trend has emerged: products labeled as "silicone" that, upon closer inspection, are actually made of rubber. This misrepresentation not only misleads consumers but also impacts performance and safety.




Silicone vs. Rubber: Understanding the Difference





At first glance, silicone and rubber might seem interchangeable. Both are flexible, durable materials commonly used in diving equipment. However, their properties differ significantly:

- Temperature Resistance: Silicone withstands extreme temperatures, maintaining its elasticity from as low as -100°C up to 250°C. In contrast, natural rubber becomes brittle in cold conditions and may degrade at higher temperatures.

- Chemical Stability: Silicone is highly inert, resisting reactions with most chemicals, making it ideal for prolonged exposure to seawater and sun. Rubber, however, can deteriorate when exposed to ozone, UV light, and certain chemicals.

- Durability: Silicone generally offers superior longevity due to its resistance to environmental factors. Rubber, while durable, may wear out faster under similar conditions.

These distinctions make silicone a preferred choice for high-quality freediving gear, offering reliability and longevity that rubber counterparts may lack.




Alchemy Silicone Neck Weight




The Cost Factor: Why Silicone Commands a Higher Price





Quality comes at a price. Producing pure silicone is an intricate process involving high-temperature treatments and precise polymerization techniques. This complexity, combined with the material's superior properties, results in a higher cost. Consequently, genuine silicone products are more expensive than those made from rubber. Manufacturers aiming to cut costs may opt for rubber while marketing their products as silicone, leading to the mislabeling issue we're witnessing.




Alchemy Silicone Belt




Spotting the Impostors: The Burn Test





So, how can you, as a discerning freediver, determine if your gear is truly made of silicone or if it's a rubber masquerader? A simple burn test can reveal the truth:

1. Safety First: Ensure you're in a well-ventilated area, away from flammable materials. Use appropriate safety equipment.

2. Sample Selection: Choose a small, inconspicuous piece of the material to test.

3. Ignition: Carefully apply a flame to the sample.

4. Observation: Silicone - Difficult to ignite, may self-extinguish, and leaves behind a white ash. Rubber - Burns readily, emits black smoke, and leaves a tacky residue without ash.

This test leverages the inherent properties of the materials: silicone's resistance to combustion and rubber's propensity to burn. By conducting this simple experiment, you can verify the authenticity of your gear.










Why This Matters 





Mislabeling isn't just a minor inconvenience; it has real implications:

- Performance: Using rubber instead of silicone can affect the flexibility and comfort of gear, impacting your diving experience.

- Safety: Inferior materials may not withstand the pressures and conditions of deep dives, posing potential risks.

- Economic: Paying a premium for what you believe is silicone gear, only to receive rubber, is unjust and economically disadvantageous.

As consumers, it's crucial to remain vigilant. Demand transparency from manufacturers and conduct your own assessments when possible. By doing so, you ensure that your investment in freediving equipment is sound, and your underwater adventures remain both safe and enjoyable.




Alchemy’s Commitment to Premium Silicone Quality





Alchemy, committed to exceptional performance and reliability, uses premium-quality, UK-made silicone across its product range. From the water rails enhancing the efficiency of Alchemy fins, to neck weights designed for superior comfort and durability, and belts that securely hold essential gear, silicone is the material of choice for optimal diving experiences. Additionally, the Alchemy Air snorkel features a high-quality silicone mouthpiece, ensuring comfort, flexibility, and longevity for divers spending extensive time underwater. By investing in genuine silicone, Alchemy guarantees products that meet the highest standards, maximizing both safety and performance.

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