In the high-temperature and high-pressure environment of automotive engine compartments, high-temperature-resistant silicone hoses and seals serve as critical safeguards for the powertrain. During engine operation, compartment temperatures often exceed 120°C, with corrosive media such as engine oil and fuel vapor causing continuous erosion. Featuring specialized formulations of fluorosilicone rubber or phenyl silicone rubber, dedicated silicone hoses can withstand long-term high-temperature impacts above 150°C and resist swelling and erosion from engine oil and hydraulic oil, ensuring stable fluid delivery of coolant, fuel, and other media.

For turbochargers, operating temperatures can surpass 200°C. Silicone seals must maintain sealing performance under high-pressure gas impact and drastic temperature fluctuations, effectively preventing exhaust gas leakage, safeguarding turbocharger efficiency and service life, and enabling stable power output from engines even under high-load conditions.

High-speed rail operates across climate zones from north to south, exposing window sealing strips to the dual test of “ice and fire” — from -50°C extreme cold in northern winters to intense summer heat in the south. Manufactured from addition-cured silicone and optimized for molecular structure, these sealing strips offer an ultra-wide temperature adaptation range, retaining exceptional elasticity between -50°C and 150°C. They neither become brittle and crack at low temperatures nor soften and deform at high temperatures.

This feature ensures a tight fit between windows and body gaps, isolating wind, rain, dust, and noise. It also withstands thermal expansion and contraction stresses caused by diurnal temperature differences, avoiding sealing failures that lead to air and water leakage in carriages. It creates a stable and comfortable travel experience for passengers while enhancing driving safety and vehicle durability.

Thermal safety of new energy vehicle (NEV) battery packs is a core industry pain point, and high-temperature-resistant silicone insulation pads act as a key defense line in delaying thermal runaway. When a battery overheats abnormally, insulation pads made of ceramifiable silicone or high-temperature-resistant foamed silicone maintain structural integrity at temperatures above 200°C. With low thermal conductivity, they block heat transfer and slow the spread of thermal runaway from a single cell to the entire pack.

This critical protection buys emergency escape time for drivers, effectively reduces the risk of battery fire and explosion, and provides essential material support for the safe popularization of new energy vehicles.

The widespread application of high-temperature-resistant silicone in transportation stems from its comprehensive properties: resistance to high and low temperatures, chemical corrosion, stable elasticity, flame retardancy, and thermal insulation. Through formula modification and process optimization, silicone materials continuously break performance limits to meet the stringent requirements of automobiles, high-speed rail, new energy transportation, and other fields.

From improving the reliability and durability of traditional transportation tools to supporting the safety upgrade of new energy transportation, high-temperature-resistant silicone has become a vital material cornerstone for the transportation industry’s transformation toward high efficiency, safety, and sustainability, driving technological innovation and quality upgrading in transportation equipment manufacturing.