Many daily necessities, maternal and infant products, and medical accessories in life are marked as "silicone material", but many people don’t know that silicone is divided into liquid and solid types. Although there is only one word difference between them, they are vastly different in performance, quality and applicable scenarios, which directly affects the safety and service life of the products. Liquid silicone raw materials are in a liquid state with good fluidity, and are formed in closed molds through an injection process. Its biggest feature is that it is softer and more elastic, with a delicate touch close to human skin. Its hardness can be as low as 0 degrees, and its rebound performance is excellent. No additives such as vulcanizing agents are needed in the production process, which is completed in a closed system with extremely high purity, and it is easy to meet food-grade and medical-grade standards. At the same time, the molding precision is extremely high, which can accurately replicate fine textures and complex structures. The product surface is smooth and flawless, not easy to yellow after long-term use, has strong aging resistance, and the temperature resistance range can reach -50℃ to 250℃. Solid silicone, on the other hand, is in a solid state, similar to plasticine, with no fluidity. It needs to be kneaded, cut into strips, and then heated and formed through a molding process. It is relatively hard and has poor elasticity. Vulcanizing agents need to be added during the molding process, which is prone to chemical residues, and its safety can only reach general standards. Limited by the process, solid silicone products have low precision, and the surface is prone to burrs and bubbles, with rough detail processing. The upper temperature resistance limit is about 200℃, and it is easy to age and crack after long-term use, so its durability is far inferior to that of liquid silicone. It is these differences that make their application scenarios completely different. Liquid silicone is mostly used in fields with strict requirements on safety, precision and touch, such as baby pacifiers, food molds, medical catheters, and high-end seals. Solid silicone is commonly used in products with low quality requirements, such as mobile phone cases, industrial gaskets, and ordinary sealing strips. When purchasing, if the product is in contact with food, the human body, or you pursue durability and precision, it is always correct to give priority to liquid silicone.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber