silicone parts manufacturer

NEWTOP Custom Silicone has been producing precision LSR components using liquid injection molding.

Due to the flexible nature of LSR, parts are manually removed from the mold, and thus, ejector pins are not built into the mold design. Like a standard aluminum tool, an LSR molding tool is fabricated using CNC machining to create a high-temperature tool built to withstand the LSR molding process.

The finished tool is loaded into an advanced LSR-specific injection molding press that is precision geared for accurate control of shot size to produce the most consistent LSR parts. Since LSR is a thermosetting polymer, its molded state is permanent—once it is set, it can’t be melted again like a thermoplastic. When the run is complete, parts (or the initial sample run) are boxed and shipped shortly thereafter.

LSR is a non-toxic, heat-resistant (thermal stability), highly resilient, and flexible thermosetting material.

Therefore, it has been widely used in the production design of electronic products, medical products, baby products, automobile parts manufacturing, food industry, diving products, kitchen utensils and seals.

NEWTOP can manufacture products with liquid silicone rubber (LSR). And LSR molds are typically cheaper than plastic injection molds.

silicone seals


Silicone Phone Case

Silicone Phone Case

Silicone Diving mask

Diving Mask


Custom silicone injection molding is one of the most efficient ways to create custom silicone rubber-molded products. In the injection-molding process, silicone rubber is heated and placed under significantly greater pressure per square inch of cavity surface. This allows the silicone to flow more easily into mold cavities, eliminating the need for labor-intensive pre-forms, decreasing cure times, and reducing material waste costs.

Characteristics of LSR

Liquid silicone rubber is a high-purity platinum cured silicone. LSR’s physical, chemical and thermal properties make it highly suitable for products where performance, durability and high quality are a necessity.