Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of custom lsr silicone parts in China. If you're going to buy custom lsr silicone parts made in China, welcome to get more information from our factory. We also accept customized orders.
Material Properties
LSR (Liquid Silicone Rubber) is a premium elastomer that offers outstanding transparency, biocompatibility, and mechanical strength. Unlike standard high-consistency silicone, LSR is a two-component platinum-cured system that provides superior tear resistance, high elongation, and excellent compression set. It is odorless, tasteless, and completely non-toxic, making it safe for direct contact with food, pharmaceuticals, and human tissue. LSR also withstands extreme temperatures from -60°C to +200°C and resists aging, UV radiation, and a wide range of chemicals, ensuring long-term reliability in demanding environments.
Precision Injection Molding
These parts are produced using precision LSR injection molding, a process that delivers high accuracy and consistency for complex geometries. The two components are mixed and injected directly into a heated mold, where they cure rapidly to form a solid, elastic part. This process allows for the production of thin-walled, intricate shapes with tight tolerances that are difficult to achieve with traditional compression molding. It also ensures uniform material distribution and minimal waste. The result is a high-quality, repeatable part with excellent surface finish and dimensional stability.
Medical & Food-Grade Compliance
LSR is a preferred material for medical devices and food-contact products because of its biocompatibility and safety. It is free from plasticizers, BPA, latex, and heavy metals. It can be formulated to comply with USP Class VI, ISO 10993, and FDA standards, making it suitable for catheters, seals, diaphragms, infant nipples, and food-grade components. The material does not leach harmful substances or alter the taste or smell of the media it contacts. Its smooth, non-porous surface also resists bacterial growth and is easy to clean and sterilize.
Customization Capabilities
We offer full customization of LSR molded parts to meet your specific design and performance requirements. Options include custom hardness (Shore A 10 to 80), colors (transparent, opaque, or custom shades), and surface finishes (glossy, matte, or textured). We can produce parts with complex features such as undercuts, thin walls, overmolding onto plastic or metal inserts, and multi-durometer combinations. Our engineering team works from your 3D CAD files or samples to ensure a perfect fit. We also support prototype and low-volume production for testing and validation.
Application Scope
These custom LSR parts are widely used across numerous industries. In medical devices, they are found in catheters, seals, valves, and wearable devices. In infant care, they are used for bottle nipples and teething toys. In food and beverage, they serve as seals, gaskets, and dispensing components. In electronics, they provide waterproofing and protection for sensitive components. They are also used in automotive, aerospace, and industrial equipment. The combination of transparency, biocompatibility, and durability makes LSR an ideal choice for demanding applications.
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