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Pure silicone grease is widely used by the plumbing industry in faucets and seals, as well as in dental equipment. This is because it is not an ingestion hazard [3] [better source needed]. Electrical utilities use silicone grease to lubricate separable elbows on lines that must endure high temperatures.
Silicone rubber is used as an electrical insulator in power cables and cable joints. [18] [21] Silicone-insulated cables are advantageous in that they can withstand temperatures from -90°C to 200°C, and are highly flexible. These properties make them suitable for maintaining circuit integrity in the event of a fire.
Thermosetting plastics or silicone rubber gels are often used, though epoxy resins are also very common. When epoxy resins are used, low chloride grades are usually specified. [1] Many sites recommend using a potting product to protect sensitive electronic components from impact, vibration, and loose wires. [2]
Self-amalgamating tape is a non-tacky silicone rubber tape that when stretched and wrapped around cables, electrical joints, hoses, and pipes combines or unites itself into a strong, seamless, rubbery, waterproof, and electrically insulating layer. [1] [2] Unlike many other polymers and fibers, it is heat-, sunlight-, and weather-resistant.
Silicone contamination of electrical switch contacts can lead to failures by causing an increase in contact resistance, often late in the life of the contact, well after any testing is completed. [13] [14] Use of silicone-based spray products in electronic devices during maintenance or repairs can cause later failures.
Traditionally, conformal coating inspection has been done manually. An inspector usually examines each PCB under a high-intensity, long-wave ultraviolet lamp. Recent developments in conformal coating automated optical inspection (AOI) have begun to use Automated Inspection Systems, which can be camera- or scanner-based.