This liquid silicone rubber seal plug sleeve is produced by Xiangchu Rubber, made of high-quality LSR material. It has excellent sealing performance, is water-resistant and aging-resistant, fits various sealing protection needs. We support customized specifications and follow ISO 9001 quality control.
Material
Industrial LSR
Hardness
Shore A 30-70
Temperature
Certifications
Applications
-40°C ~ +200°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone Rubber Seal Plug Sleeve
*Manufactured by 橡楚（湖北）橡胶有限公司*
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Our Liquid Silicone Rubber (LSR) Seal Plug Sleeve is a precision-molded custom sealing component designed to provide reliable long-term protection and sealing for connectors, valves, wiring terminals, threaded shafts, and other sensitive mechanical and electronic assemblies. Manufactured by 橡楚（湖北）橡胶有限公司 from high-purity food-grade and industrial-grade virgin liquid silicone rubber at our facility in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, this product combines excellent elasticity, chemical resistance, and temperature stability to meet the demanding performance requirements of multiple industrial sectors.
Unlike traditional molded rubber seal components, our LSR seal plug sleeves are produced through precision liquid injection molding, enabling tight dimensional tolerance control and consistent performance across high-volume production runs. Each sleeve is designed to fit tightly over protruding components, acting as both a physical barrier against dust, moisture, chemicals, and impact, and as a compliant seal that maintains sealing performance even under mechanical vibration or dynamic movement. We offer custom molding to match exact dimensional and performance requirements for specific applications, with options to adjust hardness, transparency, and material grade to match your project needs.
Our LSR seal plug sleeves are produced from 100% virgin methyl vinyl silicone rubber, with no recycled fillers or additives that compromise long-term performance. Key material properties are listed below:
We offer standard performance grades that meet most industrial application requirements, with custom adjustments available for special use cases:
All LSR seal plug sleeves are produced via precision liquid injection molding with the following standard process controls:
Unlike organic rubber seal components that crack, harden, or degrade after prolonged exposure to temperature extremes or UV radiation, our LSR seal plug sleeves maintain consistent elasticity and sealing performance across a wide -40°C to +200°C operating range. They resist ozone aging, UV degradation, and long-term water immersion, making them suitable for both indoor and long-term outdoor applications without performance degradation.
We offer both industrial-grade and food-contact compliant material grades for our LSR seal plug sleeves, eliminating the need for secondary material sourcing for projects with specialized regulatory requirements. All materials are free of BPA, phthalates, and other restricted hazardous substances, meeting global regulatory requirements for most consumer and industrial products.
Our liquid injection molding process enables production of complex internal and external geometries, including contoured profiles, textured surfaces, and integrated mounting features that cannot be achieved with conventional compression molding. This ensures a perfect fit for your specific assembly, reducing installation time and improving long-term sealing reliability.
LSR is an inherently excellent insulating material, and our seal plug sleeves provide consistent dielectric performance even in high-humidity environments. They do not absorb moisture, so insulation properties remain stable over years of use, making them ideal for protecting electrical and electronic connectors in harsh operating conditions.
We operate our manufacturing facility under the requirements of ISO 9001 quality management system, with in-process quality checks at every stage of production from raw material incoming inspection to finished product outgoing inspection. Every batch of LSR seal plug sleeves is tested for hardness, dimensional accuracy, and surface quality before shipment to ensure consistent performance.
Our LSR seal plug sleeves are used across a wide range of industries, including:
Choosing the correct hardness is critical for sealing performance and service life:
We offer both standard size stock seal plug sleeves and fully custom molded solutions to match your exact dimensions. For custom orders, please provide the following key dimensions: inner diameter, outer diameter, length, any required internal or external contour features, and mounting tolerance requirements. Our engineering team will review your requirements and provide a custom manufacturing quote.
Select the appropriate material grade based on your application:
At 橡楚（湖北）橡胶有限公司, we adhere to strict quality control processes aligned with our ISO 9001 certification. All raw materials used for LSR seal plug sleeves undergo incoming inspection to verify hardness, purity, and performance before production. In-process checks confirm dimensional accuracy and surface quality at every stage of molding and post-processing. Finished products undergo final inspection to confirm compliance with agreed specifications before shipment.
We can provide material test reports and certification of compliance with applicable material standards upon request. If you have any questions about product specifications, custom requirements, or after-sales support, please contact us at:
Our technical team is available to assist with material selection and custom design support for your specific sealing application requirements.
