Heat Resistant Silicone Wire

A:Standard heat resistant silicone wire is rated for continuous use from -60°C to +200°C (-76°F to +392°F) and can withstand short-term peaks up to about +250°C. For higher continuous temperatures we offer a +250°C grade, and where +250°C to +300°C continuous is needed we add a fiberglass braid over the silicone. At the very top of the range, nickel-plated copper conductor with a fiberglass braid withstands +300°C and beyond for intermittent duty. Always confirm continuous vs intermittent temperature when specifying, because long-term heat aging shortens life above the continuous rating.

A:Silicone rubber is flexible, stays soft over -60°C to +200°C, resists moisture and ozone, and is economical - but its mechanical strength and abrasion resistance are moderate, and it is limited above +250°C. PTFE (Teflon) withstands up to about +260°C continuous, has excellent chemical and abrasion resistance, but is stiffer and more expensive. Fiberglass braid over silicone extends the temperature to +300°C and adds abrasion protection at lower cost than PTFE. The choice depends on temperature, flexibility, abrasion and chemical exposure.

A: For normal temperatures we use tinned copper, which resists oxidation at heat and prevents the copper from turning brittle. For extreme temperatures - above roughly +250°C continuous - the tinning itself can degrade, so we use nickel-plated copper, which holds up at +300°C and above. For some aerospace and heating-element applications pure nickel conductor is used. The conductor choice follows the temperature and the environment.

A: Silicone rubber does not melt like PVC - it has no sharp melting point. When exposed to flame it forms an ash (silica) that continues to insulate, and it is self-extinguishing, so it does not propagate a fire. This is why silicone wire is used in safety-critical and high-temperature applications: even under extreme heat the insulation does not flow away and expose the conductor.

A: Heat resistant silicone wire is used wherever a conductor runs near a heat source: inside ovens, furnaces and kilns; in boiler, heater and heating-element leads; engine and exhaust-area wiring; glass and ceramic manufacturing equipment; foundry and steel-plant instrumentation; aerospace and defence harnesses; and any appliance, transformer or industrial machine where ambient temperature exceeds what PVC or standard rubber can survive.

A: MOQ is 5,000 m for standard heat resistant silicone wire (tinned copper, +200°C, 16–18 AWG, red or black) and 8,000 m for fiberglass braided +300°C, nickel-plated conductor or custom colours and printing. Lead time is 15–25 working days for bulk OEM orders, with samples available in 5–7 working days. We support custom colours, custom printing and private-label packaging.