We are Xiangchu (Hubei) Rubber located in Ezhou, China. This LSR waterproof sealing gasket is made of high-quality liquid silicone rubber, with excellent sealing performance, good resistance to high and low temperature aging, stable waterproof and dustproof performance, and can be customized.
Material
Industrial LSR
Hardness
Shore A 30-70
Temperature
Certifications
Applications
-40°C ~ +200°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone Rubber Waterproof Sealing Gasket
*Manufactured by 橡楚（湖北）橡胶有限公司*
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Liquid Silicone Rubber (LSR) waterproof sealing gaskets are custom-molded precision sealing components engineered by 橡楚（湖北）橡胶有限公司 to prevent water, moisture, dust, and fluid ingress in demanding static and dynamic application environments. Produced from high-purity injection-molded 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, these gaskets deliver consistent long-term sealing performance across a wide range of operating temperatures and environmental conditions.
Unlike conventional rubber gaskets, our LSR waterproof sealing gaskets combine inherent silicone properties with tight manufacturing tolerances to maintain sealing force and elasticity even after prolonged exposure to water, UV radiation, and thermal cycling. We manufacture all gaskets to customer-specified dimensions and performance requirements, making them suitable for everything from consumer electronics enclosures to industrial outdoor equipment.
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Our LSR waterproof sealing gaskets are produced from 100% pure addition-cure liquid silicone rubber, with no recycled fillers or low-quality additives that compromise long-term performance. Key material properties include:
All performance values below are tested per ASTM D2000 standard testing methods for silicone rubber products:
For custom molded gaskets, we adhere to the following process control parameters to ensure consistent quality:
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The inherent hydrophobicity of LSR and precision molding eliminate micro-porosity and surface defects that can cause leakage in lower-quality rubber gaskets. Our gaskets maintain their sealing force and water resistance even after 1000 hours of immersion in fresh or salt water, with no swelling, cracking, or degradation of material properties.
Unlike organic rubber gaskets that lose elasticity and develop permanent compression set over time, our LSR gaskets retain up to 85% of their original thickness after prolonged compression, maintaining consistent sealing pressure for years of service. This reduces the need for frequent maintenance and gasket replacement, lowering long-term operational costs for end users.
LSR maintains its elasticity and sealing performance across a much broader temperature range than nitrile rubber (NBR) or ethylene propylene diene monomer (EPDM) gaskets. It remains flexible in sub-zero temperatures and does not crack or harden, while resisting thermal degradation at high temperatures that would cause organic rubbers to melt or degrade. This makes our LSR gaskets suitable for use in both arctic outdoor equipment and high-temperature industrial machinery.
As a manufacturer focused on LSR products, we produce custom gaskets to match your exact design specifications, from simple O-rings to complex irregular profiles with tight tolerances. We can adjust hardness, material grade, and dimensions to meet specific application requirements, whether you need a soft conformable gasket for delicate electronic enclosures or a high-hardness gasket for heavy industrial flanges.
Our addition-cure LSR formulation is free of harmful additives, phthalates, and heavy metals, making it suitable for use in food contact applications, medical devices, and consumer products that come into contact with human skin.
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Our LSR waterproof sealing gaskets are used across a wide range of industries that require reliable water and moisture ingress protection:
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To ensure optimal sealing performance for your application, follow the selection guidelines below when ordering:
We produce gaskets in custom dimensions to match your design requirements, with maximum molded dimensions up to 600 mm x 600 mm for standard orders. For larger sealing requirements, we can produce segmented gaskets that are assembled on-site. All gaskets are produced per customer-provided CAD drawings or sample specifications, with dimensional inspection performed for every production batch to verify compliance.
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At 橡楚（湖北）橡胶有限公司, we maintain a strict quality management system certified to ISO 9001, with systematic quality control checks implemented at every stage of production from raw material incoming inspection to final product testing. Every batch of LSR waterproof sealing gaskets undergoes performance testing, including visual inspection for surface defects, dimensional verification, and compression set testing to ensure compliance with our published specifications and customer requirements.
We source raw LSR materials from trusted global suppliers with consistent material properties, and we do not use recycled or off-grade silicone to cut costs. For all custom orders, we provide pre-production sample approval before full-scale manufacturing to ensure the gasket meets your dimensional and performance requirements.
For inquiries, custom quotes, or technical support, contact us at:
