What types of products are commonly manufactured using liquid silicone rubber molding?

Quick Answer

LSR molding produces a diverse range of products: medical (surgical masks, endotracheal tubes, wound drainage components), infant care (bottle nipples, pacifiers, teething toys), kitchen (baking molds, spatulas, food storage seals), automotive (connector seals, turbocharger hoses, diaphragm valves), electronics (waterproof seals, keypads, camera gaskets), and industrial (O-rings, bellows, vibration dampers, gaskets for chemical processing).

Medical and Healthcare Products

The medical sector is the largest LSR market. Typical products: respiratory masks and tubing, surgical instrument grips, catheter components, drug delivery system seals, wound drainage bulbs, hearing aid components, dental impression trays, and implantable device encapsulation. LSR's biocompatibility and sterilizability make it the material of choice for applications contacting skin, mucous membranes, or body fluids.

Infant and Baby Care Products

LSR is the preferred material for baby products due to its safety, softness, and durability. Products: baby bottle nipples (various flow rates), pacifiers and soothers, teething rings and toys, spoons and feeding utensils, and sippy cup spouts. LSR contains no BPA, phthalates, or PVC, and its non-porous surface resists bacterial growth. The material remains soft and flexible through repeated sterilization.

Automotive and Transportation

Automotive LSR applications are growing rapidly due to the durability and temperature resistance of silicone. Products: electrical connector seals (IP67 rated), turbocharger air ducts and hoses, diaphragm valves for emission control, grommets and bushings for vibration isolation, headlamp gaskets, and battery pack seals for electric vehicles. LSR withstands under-hood temperatures and resists oil and coolant exposure.

Consumer and Household Products

LSR's non-stick surface, flexibility, and heat resistance make it ideal for kitchenware and household items: flexible baking molds (muffins, cakes, bread), spatulas and basting brushes, food storage container seals, coffee maker gaskets, water bottle mouthpieces, and shower head seals. LSR kitchenware can withstand oven temperatures up to 230°C and dishwasher cleaning without degradation.

Why Choose SOMI Custom Parts

At SOMI Custom Parts, we have experience molding LSR products across all these categories. Our engineering team designs LSR molds optimized for the material's unique flow characteristics (low viscosity, rapid cure), and we offer secondary operations including flash trimming, inspection, and packaging. We provide material certification and regulatory compliance documentation for medical, food contact, and automotive applications.

Case Study

A baby product company needed to redesign their pacifier line with updated ergonomics and enhanced safety features. SOMI produced the LSR tooling with a 4-cavity mold, achieving a 25-second cycle time. The pacifiers met all EN 1400 and ASTM F963 safety standards. Production of 200,000 units was completed within 6 weeks, and the product line received the highest safety rating from independent test labs.

Industry Data

The LSR market is projected to reach $3.8 billion by 2028, with medical (35%), automotive (25%), consumer goods (20%), and industrial (15%) as the primary segments. The switch from HCR to LSR in the medical sector has accelerated by 20% annually as manufacturers seek to reduce cycle times and improve consistency (Rubber World, 2025).

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