Product Overview
Our Silicone High-Temp Moulded Parts represent the pinnacle of thermal sealing technology, engineered through precision liquid injection molding (LIMS) to deliver consistent performance in extreme temperature environments. Unlike standard rubber components, these parts are designed for continuous operation at 225°C—withstanding intermittent exposure up to 300°C during process spikes—making them indispensable in industries where thermal cycling threatens seal integrity. Crafted from premium-grade silicone rubber (VMQ) with controlled cross-link density, they offer a unique combination of excellent flexibility, long-term thermal stability, and resistance to ozone, UV radiation, and saturated steam. Beyond high-temperature resilience, they address the need for hygienic, low-maintenance sealing in sectors like medical device manufacturing and food processing, where material purity and cleanability are non-negotiable.
Product Specifications
Parameter | Value |
Material | Silicone rubber (VMQ) (FDA 21 CFR 177.2600 compliant, food-grade, and high-temperature grades with ceramic fillers) |
Temperature Range | -60°C to 225°C (continuous), 300°C (intermittent, up to 4 hours) |
Hardness | 50–80 Shore A (customizable in 5 Shore increments) |
Elongation at Break | 300–500% (with high-elongation grades reaching 600% for dynamic applications) |
Compression Set | ≤20% after 22 hours at 200°C, ≤25% after 1000 hours at 150°C |
Certifications | UL 94 V-0 (flame-retardant variants), ISO 10993 (biocompatible options) |
Features
Extreme Temperature Performance: Maintains consistent elasticity across a broad spectrum, from freezing conditions (-60°C) in cold storage equipment to high-heat environments in industrial ovens and exhaust systems. Undergoes thermal aging testing per ISO 188, with hardness change ≤5 Shore A after 1000 hours at 200°C.
Superior Flexibility: With 400%+ elongation in standard grades, these parts accommodate dynamic movements in rotating or vibrating equipment without cracking, ensuring long-term reliability in automotive engine gaskets and HVAC duct seals.
Chemical Stability: Resists degradation from saturated steam, oxidation, and mild chemicals (including sanitizing agents like peracetic acid), making them suitable for pharmaceutical sterilization autoclaves and food processing steam jackets.
Precision Molding: Utilizes liquid injection molding (LIMS) for tight tolerances (±0.05mm), enabling complex geometries such as multi-lip seals, bonded assemblies, and integrated mounting features—eliminating secondary assembly steps.
Low Outgassing & Cleanability: Complies with NASA SP-R-0022A for low volatile emissions, ideal for semiconductor cleanrooms. Smooth surface finish (Ra ≤0.8μm) minimizes particle retention, meeting ISO 14644-1 Class 8 standards.
Applications
Automotive & EV: Engine cylinder head gaskets, turbocharger oil seals, and battery cooling system gaskets in electric vehicles, where resistance to dielectric fluids and thermal cycling is critical.
Industrial Machinery: Sealing systems for plastic extruders, steam compressors, and heat recovery exchangers, where high-temperature steam and thermal shock are common.
Medical Devices: Sterilizable door seals for autoclaves, syringe plunger gaskets, and fluid pathway seals in dialysis machines and surgical laser equipment.
Food & Beverage: FDA-approved seals for pasteurization kettles, filling machine valves, and conveyor belt guides, where frequent CIP (clean-in-place) cycles with caustic cleaners are required.
