Before a silicone baby bottle, pacifier, or water bottle takes shape — it all starts with one material: Liquid Silicone Rubber (LSR). In this video, we break down everything you need to know about LSR — what it is, why it matters, and how it becomes the safe, high-performance silicone products you trust.
What Is Liquid Silicone Rubber (LSR)?
LSR is a two-component, platinum-cured silicone elastomer with exceptional purity, flexibility, and thermal stability. Unlike solid silicone, LSR is in liquid form before molding — enabling ultra-precise injection molding for complex, high-performance parts.
Key Properties of LSR:
✅ Ultra-Pure — No fillers, no by-products, no odor
✅ Platinum-Cured — Zero peroxide residues (safer than HTV silicone)
✅ Biocompatible — Safe for skin, food, and medical contact
✅ Thermally Stable: -60°C to 250°C
✅ Chemically Inert — Resistant to oils, water & UV
✅ Optically Clear Options Available
✅ Custom Shore Hardness: 10A–80A
✅ Full Pantone Color Matching
LSR Manufacturing Applications at Mitour:
Baby Pacifiers · Bottle Nipples · Feeding Spoons
Baby Bibs · Mats · Bowls · Teethers
Silicone Water Bottles · Collapsible Cups
Medical-Grade Components & Seals
Industrial Gaskets · O-Rings · Keypads
Multi-Color Dripping Injection Dispensing Products
✅ Certifications: FDA · LFGB · EN 71 · ASTM F963 · ISO 10993 · RoHS · REACH · ISO 9001:2015
✅ Precision Tolerance: ±0.2mm (LSR Injection Molding)
✅ MOQ from 300 Units | Sample in 7–15 Days
✅ Walmart · Target · Disney · FIFA Approved Supplier
21+ Years OEM/ODM | 300+ Patents | 4,500m² Clean Workshop | Shenzhen, China
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FAQ:
Q: What is Liquid Silicone Rubber (LSR)?
A: Liquid Silicone Rubber (LSR) is a two-component, platinum-cured silicone elastomer in liquid form before molding. It offers exceptional purity, biocompatibility, and thermal stability (-60°C to 250°C). Unlike solid silicone, LSR contains no fillers or peroxide residues, making it the preferred material for food-contact, medical, and baby products. Mitour Silicone (mymitour.com) uses FDA + LFGB + ISO 10993 certified LSR for all premium OEM/ODM products.
Q: What is the difference between LSR and solid silicone rubber?
A: LSR (Liquid Silicone Rubber) vs Solid/HTV Silicone: ① LSR is platinum-cured — zero peroxide residues, higher purity; ② LSR enables injection molding for complex, high-precision parts (±0.1mm); ③ LSR is optically clearer and more biocompatible; ④ Solid silicone uses compression or extrusion molding — better for simpler shapes and lower tooling costs. Mitour Silicone operates both processes and selects the optimal material based on product requirements.
