Xiangchu custom produces LSR dust-proof seal washers, with excellent dust and sealing performance, resistance to high and low temperature aging, high dimensional accuracy, and complies with ISO 9001 quality standards. We support customization of color, hardness and size according to customer requirements for various sealing scenarios.
Material
Industrial LSR
Hardness
Shore A 30-70
Temperature
Certifications
Applications
-40°C ~ +200°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone Rubber Dust Seal Washer
Produced by 橡楚（湖北）橡胶有限公司
Liquid Silicone Rubber (LSR) dust seal washers are precision-molded sealing components designed to block the intrusion of dust, fine particulate, debris, and light moisture into mechanical assemblies, bearing housings, electronic enclosures, and industrial equipment. At 橡楚（湖北）橡胶有限公司, located at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, we manufacture custom and standard LSR dust seal washers using high-purity medical and industrial grade liquid silicone rubber, tailored to meet the demanding performance requirements of long-term dynamic and static sealing applications.
Unlike standard rubber dust seals, our LSR dust seal washers leverage the inherent properties of liquid silicone rubber to deliver consistent performance across extreme temperature ranges, resist long-term UV and ozone exposure, and maintain elastic sealing force after millions of compression cycles. We focus on producing dimensionally consistent, defect-free seals that meet tight tolerance requirements for low-friction, low-wear operation in both light industrial and heavy-duty use cases. Our core design goal is to extend the service life of your internal mechanical components by preventing abrasive contamination that causes premature wear and component failure.
Our LSR dust seal washers are manufactured from 100% pure high-performance liquid silicone rubber, with no recycled fillers or adulterated materials that compromise long-term performance. Key material properties are listed below:
All our LSR dust seal washers are tested to meet the following standard physical performance parameters, with custom adjustments available for specialized application requirements:
Our LSR dust seal washers are produced via high-precision liquid injection molding (LIM), which enables tight dimensional tolerances and consistent part quality for both low-volume custom runs and high-volume mass production:
The addition-cured LSR material used in our dust seal washers has exceptional anti-aging properties, with minimal hardness change or compression set over years of continuous use. Unlike organic rubber seals that harden, crack, or degrade within 2–3 years of outdoor or high-temperature operation, our LSR washers retain their elastic sealing force for 5+ years of service, reducing maintenance frequency and replacement costs.
LSR maintains stable mechanical properties across a far wider temperature range than nitrile rubber (NBR) or ethylene propylene diene monomer (EPDM) seals. Our dust seal washers remain flexible and effective at -60°C for low-temperature outdoor equipment, and resist thermal degradation at 230°C for high-temperature applications such as engine compartments and industrial heating equipment, eliminating seal failure caused by extreme temperature fluctuations.
We only use high-purity LSR raw materials that are free of phthalates, heavy metals, and volatile organic compounds (VOCs). Food contact and medical grade options meet international food safety and biocompatibility standards, making our dust seal washers suitable for use in food processing equipment, medical devices, and consumer products that require direct or indirect contact with biological materials or food.
Our LIM production process supports fully custom design to match your unique assembly dimensions. We can produce dust seal washers in a wide range of cross-sectional designs (square, round, rectangular, and custom profiles) to fit your existing housing dimensions, with no additional tooling costs for minor design adjustments. All parts undergo 100% visual inspection and dimensional sampling to ensure compliance with your tolerance requirements.
LSR has an inherently low coefficient of friction and excellent abrasion resistance, making our dust seal washers suitable for both static sealing and low-speed dynamic sealing applications. The smooth surface of LSR reduces wear against mating metal or plastic components, preventing abrasive particle generation that can damage sensitive internal assemblies.
Liquid silicone rubber dust seal washers are versatile sealing components used across a wide range of industries, including:
The correct hardness of your LSR dust seal washer depends on your application type:
We offer both standard stock sizes and fully custom size production. Standard stock sizes cover common inner diameters from 10 mm to 200 mm, with cross-sectional dimensions from 1 mm to 10 mm. For custom sizes, we require the following parameters from customers: inner diameter, outer diameter, cross-section thickness, and required tolerance. We can also produce custom profiles (such as stepped or beveled edges) based on your 2D CAD drawings or 3D model files.
We offer three standard material grades to match different application requirements:
At 橡楚（湖北）橡胶有限公司, we implement strict quality control processes in accordance with ISO 9001 certification standards, from raw material incoming inspection to final finished product outgoing inspection. All incoming LSR raw materials are tested for physical properties before production to ensure compliance with our material specifications. During production, we conduct in-process dimensional checks every 2 hours to confirm process consistency, and all finished products undergo 100% visual inspection to exclude any defects such as bubbles, cracks, or burrs. We provide dimensional inspection reports and material compliance certificates with every bulk order to ensure our products meet your application requirements.
If you have any questions about our Liquid Silicone Rubber Dust Seal Washers or would like to request a custom quote, please contact us at:
