High-viscosity silicone grease, also known as stringy silicone grease, has a thick, sticky, and elastic texture. It offers strong adhesion and is not easy to flow or drip during use. This type of grease is suitable for applications that require long-term sealing, waterproofing, and insulation. It is commonly used on O-rings, rubber seals, valves, connectors, terminals, and parts that need stable protection in humid or outdoor environments.