LSR Manufacturing
for Premium Pet Products
Liquid Silicone Rubber (LSR) is a two-component platinum-cured elastomer, injected under high precision for soft, flexible, and food-contact-safe pet products. Engineered for complex geometries and mass production.
Core Properties
Why LSR Outperforms Standard Elastomers
LSR combines food-grade purity with mechanical resilience -- ideal for products exposed to pets' saliva, chewing, washing, and extreme temperatures.
Thermal Stability
Stable from -50°C to 250°C. Safe for dishwashers, freezers, boiling water, and sterilization.
Food-Grade Purity
100% platinum-cured, BPA-free, odorless. Compliant with FDA, LFGB, CE, RoHS, REACH.
High Tear Resistance
45% improved tensile toughness vs. standard silicone. Withstands aggressive pet chewing.
Low Compression Set
Retains shape and elasticity under long-term stress. Ideal for seals, caps, and valves.
Fine Detail Fidelity
Low viscosity liquid fills intricate cavities -- micro-textures, undercuts, thin walls.
Biocompatibility
Hypoallergenic, non-toxic, suitable for skin and mouth contact -- safe for pet daily use.
UV & Weather Resistant
Will not yellow, crack, or degrade under sunlight and ozone exposure.
Chemical Resistance
Resistant to oils, detergents, mild acids/bases -- easy to clean and sanitize.
Pet Product Structures
LSR Excels in These Product Categories
From soft chewable toys to precision functional parts -- LSR adapts to a wide range of pet product requirements.
Soft Chew Toys
High tear strength, bite-resistant
Slow Feeder Mats
Complex surface textures
Collapsible Bowls
Flexible, shape-memory walls
Grooming Brushes
Soft bristles, overmolded grip
Paw Washer Cups
Flexible silicone bristles
Water Bottle Valves
Precision sealing components
Treat Dispensers
Multi-cavity enclosures
Silicone Collars
Skin-friendly, waterproof
High-Precision Applications
Micro Structures. Macro Reliability.
LSR's low viscosity and automated injection enable the manufacturing of parts with ultra-thin walls, deep undercuts, and intricate microstructures -- unachievable with compression-molded solid silicone.
Thin-Wall Molding
Wall thickness down to 0.3mm for flexible membranes, valves, and seals.
Complex Undercuts
Elastic properties allow demolding of complex internal geometries without secondary tooling.
Flashless Finishing
Fully enclosed injection eliminates flash -- reducing manual deflashing labor by 90%.
Micro-Textured Surfaces
Replicate micro patterns, logos, and tactile grips with sub-millimeter accuracy.
Hardness Range
From Gel-Soft to Firm Durable
LSR shore hardness ranges from 10A to 80A, matched precisely to product function.
Ultra Soft
Gel-like comfort. Ideal for puppy teethers, sensory toys, and skin-contact pads.
Soft Flexible
Standard chew toys, feeder mats, collapsible bowls, grooming brush bristles.
Medium Firm
Durable chewers, collar components, treat dispenser bodies, grips.
Firm Durable
Heavy-duty chew bones, structural rings, hard-use mechanical parts.
Automated Injection
Fully Automated. Repeatably Precise.
LSR injection molding is a closed-loop automated process -- eliminating human variables and enabling consistent 24/7 production.
Continuous Production
Lights-out manufacturing capability. Fully automated dosing, injection, and demolding.
Fast Cycle Times
Platinum cure cycles as low as 30 seconds -- dramatically faster than compression molding.
Zero Material Waste
Cold runner systems eliminate sprue/runner scrap. 100% material utilization.
Batch Consistency
Volumetric dosing ensures every shot is identical. Perfect for strict brand QC.
Labor Cost Reduction
Robotic demolding and vision inspection minimize manual handling in high volumes.
Scalable Volume
Easily scales from 10K pilot runs to multi-million unit annual programs.
LSR vs HTV Comparison
LSR vs Solid Silicone: Which Fits Your Product?
Both materials are 100% silicone -- but their processing and properties serve different product needs.
| Characteristic | LSR (Liquid) | Solid Silicone (HTV) |
|---|---|---|
| Material Form | Two-component liquid | Solid gum, rolled sheets |
| Processing | Injection molding, automated | Compression molding, semi-manual |
| Curing System | Platinum catalyst | Peroxide or platinum |
| Cycle Time | 30s - 90s | 3 - 10 minutes |
| Geometry Complexity | Excellent (thin walls, undercuts) | Moderate (simpler geometries) |
| Dimensional Tolerance | ±0.05mm | ±0.10mm |
| Surface Finish | Flashless, high gloss capable | Requires deflashing |
| Overmolding | Excellent (plastics, metals) | Limited |
| Tooling Cost | Higher upfront | Lower upfront |
| Ideal Volume | High volume (100K+) | Low to medium (1K - 50K) |
| Best For | Precision parts, seals, overmolded products | Large flat parts, bowls, mats, simple shapes |
Multi-Material Overmolding
Bonding LSR with Plastics & Metals
Our two-shot LSR injection lines allow seamless bonding of silicone to rigid substrates -- creating hybrid products with ergonomic grips, waterproof seals, and refined aesthetics in a single process.
LSR + PP / ABS / PC
Rigid plastic bases with soft silicone contact zones -- brushes, bottle lids, feeder bases.
LSR + Stainless Steel / Aluminum
Durable metal cores with silicone sealing/comfort layers -- collar buckles, premium bowls.
LSR + Nylon / PBT (Engineering)
Load-bearing components with vibration damping -- connectors, mechanical housings.
LSR + Textile / Fabric
Hybrid soft goods -- anti-slip bases, grip zones on pet apparel and carriers.
Selection Guide
Key Decisions When Choosing LSR
Six factors our engineering team evaluates with every new LSR project.
01
Food Contact & Compliance Grade
Food Contact & Compliance Grade
02
Shore Hardness Specification
Shore Hardness Specification
03
Color & Pigment Strategy
Color & Pigment Strategy
04
Overmolding Substrate Compatibility
Overmolding Substrate Compatibility
05
Production Volume & Tool Design
Production Volume & Tool Design
06
Post-Processing Requirements
Post-Processing Requirements
Case Studies
Recent LSR Projects
A selection of OEM/ODM programs we've engineered for global pet brands.
Precision One-Way Valve
Developed a 50A LSR check valve with ±0.03mm sealing surface, replacing a 3-part assembly. Cycle time reduced by 60%.
LSR + ABS Grooming Brush
Two-shot overmolded brush with 40A silicone bristles on ABS core. Achieved 99.5% bond strength across 100K+ units.
Textured Slow Feeder
4-cavity mold producing a complex-textured LSR feeder mat. Micro-pattern replication accuracy at sub-millimeter fidelity.
Heavy-Duty LSR Chew
70A LSR chew toy with internal cavities for treats. Passed 10,000-cycle aggressive bite test without tear propagation.
LSR + Aluminum Buckle
Premium pet collar hardware with aluminum core and 60A LSR skin layer for waterproof, comfort-touch finish.
Freezable Teething Ring
Dual-hardness LSR teething ring (20A soft nubs + 50A core) with freezer-safe internal gel chamber.
Request Your LSR Project Quote
Share your product idea or technical drawings. Our engineering team responds within 24 hours with DFM feedback, material recommendations, and tooling budget.
- Free DFM review within 24 hours
- LSR material samples & swatches
- Transparent tooling cost estimate
- Full NDA & IP protection