LSR molding. Two-part silicone. Medical-grade.
Liquid Silicone Rubber (LSR) injection molding — two-part platinum-cured silicone. High-performance elastomer for medical devices, automotive seals, baby products.
Liquid silicone rubber molding
LSR: liquid before molding, faster cycle, higher precision. HCR: gum-stock, compression-molded, lower tooling cost.
Key principles.
Two-part injection
Two liquid components mixed in machine, injected into heated mold.
Heat-cured
Mold heated to 170-200°C. Cures in seconds.
High-performance silicone
Hardness 5-90 Shore A. Temperature -50 to +200°C.
USP Class VI
USP VI silicone grades for implants, drug-contact.
Fast
Faster than rubber compression molding. 30-60 second cycles.
Premium
LSR material premium ($15-30/kg). Tooling $20-100K. Per-piece cost low at volume.
FAQ
LSR: liquid before molding, faster cycle, higher precision. HCR: gum-stock, compression-molded, lower tooling cost.
Medical (catheter components, masks), automotive (gaskets, seals), baby products (pacifiers, bottles).
5 Shore A (very soft) to 90 Shore A (firm). Wider range than thermoplastic elastomers.
Optical-grade LSR clear. Used in LED lenses, optical applications.
USP Class VI grades standard for medical. FDA-approved for direct food/skin contact.
5K+ pieces economical with steel mold. Higher volumes (50K+) drive per-piece cost low.
Get an instant quote
Send your CAD — we reply with detailed pricing, lead time, and DFM feedback within 4 working hours.
Talk to an engineer
WhatsApp our team directly. Most messages answered within 12 minutes during work hours.
Explore all services
CNC, 3D printing, injection molding, sheet metal, casting, finishing — one quality system, one partner.
Keep reading
Quote
Get a free CNC machining, 3D printing, injection molding quote from PifyC. Send CAD via WhatsApp or email — q…
Read more →Moulding & castingInjection molding
Plastic injection molding from China: rapid aluminum tooling in 14 days for 500–10,000 parts, production P20/H13…
Read more →MachiningCNC machine
ISO 9001 certified CNC machining in Wuxi, China. 3, 4 and 5-axis milling, Swiss turning, 40+ materials, ±0.01 mm…
Read more →Additive manufacturing3D printing service
Industrial-grade 3D printing from Wuxi, Jiangsu, China: SLA, SLS, MJF and DMLS metal. Functional prototypes and …
Read more →Sheet metal & fabricationSheet metal
Precision sheet metal fabrication from Wuxi: 4 kW fiber laser cutting, Amada press brake bending (±0.1 mm), TIG/…
Read more →Finishing & treatmentFinishing services
Complete in-house surface finishing: Type II/III anodize, powder coating, electroplating, passivation, bead blas…
Read more →PifyCMaterials
PifyC's 50+ production-grade materials: aluminum, stainless steel, titanium, brass, copper, and engineering p…
Read more →Moulding & castingVacuum casting
Precision vacuum casting from Wuxi: silicone tooling for 20–50 polyurethane copies that mimic ABS, PC, PP, PMMA …
Read more →
Send a CAD file. Get an engineering-reviewed quote.
No minimum quantity, free DFM feedback from a senior manufacturing engineer, and an NDA signed before file review on request.