Customized LSR diaphragm valve sleeve produced by Xiangchu Rubber, made of high-quality liquid silicone rubber with excellent sealing performance. It is resistant to chemical corrosion and extreme temperature, fits various industrial valve requirements, passes ISO 9001 certification and supports custom specifications.
Material
Industrial LSR
Hardness
Shore A 40-70
Temperature
Certifications
Applications
-40°C ~ +200°C
Colors
Black, White, Transparent, Customizable
# Liquid Silicone Rubber Diaphragm Valve Sleeve
*Manufactured by 橡楚（湖北）橡胶有限公司*
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Liquid Silicone Rubber (LSR) diaphragm valve sleeves are critical sealing components designed to protect diaphragm valve actuation mechanisms, maintain process purity, and prevent external contamination in fluid control systems. 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, our LSR diaphragm valve sleeves are precision-molded from high-purity medical and industrial-grade liquid silicone rubber to meet the strict performance requirements of diverse fluid processing applications.
Unlike general-purpose rubber sleeves, our LSR diaphragm valve sleeves deliver consistent long-term sealing performance, even in continuous cycling applications with repeated compression and flexing. The inherently non-porous structure of LSR eliminates fluid absorption, prevents bacterial growth, and resists chemical degradation from a wide range of process fluids. This component fits over the diaphragm and actuation stem of diaphragm valves, creating a secondary barrier between the process side of the valve and the external environment while enabling smooth, unimpeded actuation.
Our core selling points include precision mold engineering for exact fitment to standard valve dimensions, custom formulation options for specific chemical and temperature requirements, and full compliance with purity standards for sensitive processing environments.
Our LSR diaphragm valve sleeves are produced from addition-cured liquid silicone rubber with the following base material properties:
Finished diaphragm valve sleeves meet the following physical performance parameters (values vary by hardness grade):
All our LSR diaphragm valve sleeves are manufactured via liquid injection molding (LIM) with the following controlled process parameters:
LSR’s inherent low modulus and high elasticity deliver exceptional resistance to repeated flexing and compression cycling, a critical requirement for diaphragm valve sleeves that must actuate thousands of times without cracking, splitting, or permanent deformation. Our sleeves maintain their sealing properties and original dimensions after millions of actuation cycles, reducing maintenance frequency and unplanned downtime.
Our LSR formulations resist degradation from water, dilute acids and bases, alcohols, common sterilants, and many polar process chemicals. The non-porous surface does not absorb process fluids, preventing swelling, weight gain, or material breakdown that can compromise sleeve performance over time. LSR also resists ozone, UV radiation, and atmospheric aging, making our sleeves suitable for both indoor processing systems and outdoor valve installations.
Platinum-cured LSR has very low levels of extractables and leachables, making our diaphragm valve sleeves ideal for use in biopharmaceutical processing, food and beverage production, and ultrapure water systems. Unlike peroxide-cured silicones, our addition-cured LSR does not leave residual byproducts that can contaminate sensitive process streams.
Using advanced liquid injection molding technology, we produce diaphragm valve sleeves with consistent wall thickness, tight dimensional tolerances, and smooth, blemish-free surfaces. A precise fit eliminates gaps that can allow contamination ingress or fluid leakage, ensuring reliable long-term operation of your diaphragm valve assembly. We can also produce custom-sized sleeves to match non-standard valve dimensions.
The smooth, non-stick surface of LSR simplifies cleaning and resist buildup of process residues. Our sleeves are compatible with all common sterilization methods, including autoclaving, gamma irradiation, ethylene oxide (EtO) sterilization, and cleaning with CIP (clean-in-place) systems, supporting strict hygiene requirements in regulated industries.
Liquid silicone rubber diaphragm valve sleeves are used across a wide range of industries for fluid control applications, including:
Choose hardness based on your valve actuation force and pressure requirements:
We offer standard diaphragm valve sleeves to fit common nominal valve sizes from DN15 (1/2 inch) to DN100 (4 inch). For custom non-standard valve designs, we can manufacture sleeves to your exact dimensional drawings and requirements, including custom wall thicknesses, stem opening dimensions, and overall length. Please provide your valve model and dimensional requirements for an exact quote.
Select the appropriate material grade based on your application:
At 橡楚（湖北）橡胶有限公司, we implement a complete quality management system certified to ISO 9001, covering every stage of production from raw material incoming inspection to finished product testing before shipment. Every batch of our LSR diaphragm valve sleeves undergoes routine testing for hardness, dimensional accuracy, visual surface quality, and compression set to ensure consistent compliance with our published specifications.
We source all our raw LSR material from qualified global suppliers with full traceability, and we maintain full batch records for every product we produce to support traceability requirements for regulated industries. Our production facility is 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, where we follow strict process control protocols to deliver consistent, high-quality LSR components for our global customers.
For inquiries, custom specifications, or quotes, please contact us at:
