Produced by Xiangchu Rubber, this LSR seal plug gasket is made of high-quality liquid silicone rubber. It features excellent waterproof sealing performance, high and low temperature resistance, and anti-aging property. We support customization of different specifications, hardness and colors to meet sealing requirements of various fields.
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 Gasket
*Manufactured by 橡楚（湖北）橡胶有限公司*
Our Liquid Silicone Rubber (LSR) Seal Plug Gasket is a precision-molded custom sealing solution engineered to meet the demanding requirements of modern industrial and consumer applications. Designed and manufactured by 橡楚（湖北）橡胶有限公司 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, these gaskets combine the inherent excellent performance of LSR with tight dimensional tolerances to deliver consistent, long-lasting sealing performance across a wide range of operating conditions.
Unlike generic cut gaskets or thermoset rubber alternatives, our LSR seal plug gaskets are produced through high-precision injection molding, enabling complex integrated geometries that combine plug-style blocking functionality with flat gasket sealing in a single component. This integrated design eliminates assembly errors, reduces part count, and improves overall system reliability. We cater to custom orders of all volumes, from low-volume prototype runs to high-volume mass production, and can tailor dimensions, hardness, and surface finishes to match your specific application requirements.
All our LSR seal plug gaskets are produced from 100% pure high-grade platinum-cured liquid silicone rubber, free of fillers, peroxides, and harmful additives that can compromise long-term performance. Key material properties include:
Our standard LSR seal plug gaskets meet the following physical performance parameters; custom adjustments can be made to meet specific application requirements:
Our injection molding process ensures consistent quality and dimensional control for all production runs:
LSR outperforms most organic rubber materials in extreme temperature conditions, retaining elasticity and sealing performance even after prolonged exposure to both freezing low temperatures and continuous high-temperature operation. It also exhibits excellent resistance to UV radiation, ozone, weathering, and moisture, making it ideal for both indoor and outdoor long-term use without cracking, hardening, or performance degradation.
The low compression set of addition-cured LSR ensures that our seal plug gaskets maintain consistent contact pressure on sealing surfaces for years, even under constant clamping force. Unlike cut gaskets that can develop uneven stress or edge fraying, our precision-molded LSR gaskets have uniform density and dimensional stability, eliminating leak paths caused by poor surface conformity.
We offer food-contact and medical-grade LSR formulations that comply with major global safety standards for food contact and medical devices. These grades are free of leachable additives, can withstand repeated steam autoclave sterilization, and do not support bacterial growth, making them suitable for sensitive applications in food processing and medical equipment.
Our injection molding process supports complex plug-and-gasket integrated geometries that cannot be achieved with manual cutting or compression molding. This allows you to combine multiple sealing functions in a single part, reducing assembly time and lowering overall system cost. We can add alignment tabs, mounting holes, locating pins, or textured surfaces to match your exact design requirements.
For high-volume orders, LSR injection molding delivers consistent part quality with low per-unit labor costs, resulting in a more cost-effective solution than manual assembly of separate seal and gasket components. We maintain strict process control at every stage of production to ensure minimum part-to-part variation, reducing rejection rates and downtime for your assembly lines.
Our LSR Seal Plug Gaskets are suitable for a wide range of industrial and commercial applications, including:
Choosing the correct durometer hardness is critical to achieving optimal sealing performance:
All our LSR seal plug gaskets are custom manufactured to match your required dimensions. We do not maintain a standard stock of generic sizes, allowing us to precisely match your design requirements. To request a quote, please provide 2D drawings or 3D CAD files with your required dimensions, tolerances, and any special feature requirements.
We offer three primary material grades to match different application requirements:
At 橡楚（湖北）橡胶有限公司, we maintain a strict quality management system certified to ISO 9001, ensuring that every LSR seal plug gasket we produce meets our documented quality standards and your specification requirements. Our quality control process includes incoming material inspection for all raw LSR material, in-process dimensional checks for every production run, and final performance testing before shipment. We trace all production batches to ensure full traceability from raw material to finished product.
For inquiries, custom quotes, or technical support, please contact us at:
