Low Pressure Molding Services
Formioo offers low pressure molding services for encapsulating sensitive electronics and connectors. Functional prototypes and low-volume parts can be delivered in as fast as 5 days.
- More than 10 years of low pressure molding manufacturing experience
- Wide range of material options suitable for varied industrial applications
- Small batch production parts
- 24/7 engineering support
Reliable Low Pressure Molding Manufacturer from China
Formioo is a dedicated low pressure injection molding manufacturer based in China, providing fast and safe molding solutions for protecting delicate electronics and components. Our in-house facilities are equipped with advanced low pressure molding machines and temperature-controlled dispensing systems, enabling us to handle both prototype development and small-batch production with speed, accuracy, and repeatability.
Our team offers full technical support, including DFM analysis and mold design optimization, to help clients reduce tooling time and improve process efficiency. The low injection pressure ensures minimal mechanical stress and excellent sealing performance, ideal for overmolding PCBs, sensors, connectors, and fragile assemblies. We help our clients achieve faster product launches, improved product protection, and better overall cost control.
Founded in 2016, Formioo has delivered over 100,000 custom molded parts to clients in automotive electronics, medical devices, consumer products, and industrial automation. Our streamlined production system and strict quality control allow us to offer short lead times and consistent part performance, even in highly specialized or low-volume orders.
Our Low Pressure Molding Services
At Formioo, our low pressure molding capabilities include encapsulation molding, overmolding, potting, and insert molding—designed to protect sensitive electronics and connectors without damaging heat- or pressure-sensitive components. We work with specialized polyamide-based hot-melt materials such as Henkel Technomelt® and other industrial-grade thermoplastics to ensure durability, insulation, and waterproof sealing in critical applications.
We offer tailored finishing and functional enhancements, including part labeling, low-viscosity sealing, and cable strain relief integration. Our low pressure molding processes maintain dimensional accuracy with typical tolerances of ±0.05 mm, ideal for sealing and protecting PCBs, wiring harnesses, USB connectors, and automotive sensor assemblies. All components undergo stringent inspection and performance validation to ensure long-term reliability.
Guards vulnerable areas with precise material encapsulation.
Combines different materials for increased function and durability.
Seals electronic assemblies for protection against environmental factors.
Integrates metal or plastic inserts into molded parts for added strength.
Low Pressure Molding Capabilities
Material Compatibility
We support materials such as thermoplastics, elastomers, and engineering plastics for a wide range of industrial and custom production uses.
Printing Accuracy
Our standard tolerance is controlled within ±0.05mm, ensuring high precision for electronic components, connectors, and industrial applications.
Maximum Build Size
Our maximum part size capability is up to 500mm × 300mm × 200mm, suitable for small to medium-sized components.
Surface Finishing Options
We offer polishing, texturing, and coating as value-added options for greater durability and aesthetics.
Delivery Time
Our standard lead time is 7-14 days, with expedited services available for urgent projects.
Massive Network
We work with trusted injection molding suppliers.
Explore Low Pressure Molding Parts We Manufactured
Discover precision-engineered components manufactured through our trusted manufacturing. From prototyping to mass production, our Low Pressure Molding solutions meet the highest industry standards.
Low Pressure Molding Tolerance
| Name | Tolerance Range |
|---|---|
| Standard Low Pressure Molding Parts | +/- 0.3 mm to +/- 0.7 mm |
| High-Precision Low Pressure Molding Parts | +/- 0.1 mm to +/- 0.3 mm |
| Complex Low Pressure Molding Parts | +/- 0.2 mm to +/- 0.5 mm |
- *Formioo accommodates part lengths of up to 48", depending on the process. For larger dimensions, please reach out to us for inquiries. The tolerances listed represent minimums under ideal conditions; however, looser tolerances may be necessary based on the process, material selection, or part geometry.
Low Pressure Molding Materials
PP
Polypropylene is ideal for Low Pressure Molding as it possesses low melt viscosity, good flow, and is cost-effective. It has a low processing temperature that enables the production of thin-walled and complex parts without requiring high pressure. PP is used in packaging, automotive interior parts, consumer goods, and household appliances. For example, molded PP components such as bottle closures, food containers, and automotive trim parts utilize its excellent replication of small details. Its dimensional stability and rapid cooling make this material suitable for large-volume production where precision is required.
- Mill Lead Time: 5-7 days
- Color: Natural, white, black
PE
Polyethylene offers good processability in Low Pressure Molding since it has high flowability and a low melting point. This material makes it easy to mold complex shapes with minimal warpage. It is used extensively in the manufacture of large containers, piping systems, protective housings, and flexible packaging components. For instance, HDPE and LDPE molded parts such as storage tanks, toy housings, and industrial liners have reproducible quality and durability. PE’s economy and versatility also suit it well to high-volume, low-pressure applications.
- Mill Lead Time: 5-7 days
- Color: Natural, blue, blackes
PS
Polystyrene is a very suitable candidate for Low Pressure Molding as it possesses very good flow properties and can be easily processed at lower pressures. It is well suited for intricate mold designs as it can replicate fine details very well. PS has widespread use in the production of consumer electronics enclosures, disposable food service items, light packaging, and decorations. For example, molded PS components in toys, instrument cases, and display items have excellent surface finish and dimensional accuracy, with reduced material wastage and cycle times. Its low cost also makes it highly favored for mass production.
- Mill Lead Time: 5-7 days
- Color: Clear, white
PC
Polycarbonate is an ideal candidate for Low Pressure Molding since it possesses good flowability, excellent impact strength, and clarity. It flows freely under low pressure to form thin-walled, complicated components with minimal stress. PC is used in protective housings, clear displays, automotive lighting covers, and electronic device housings. For instance, PC molded components such as instrument clusters, safety guards, and optical panels utilize its improved clarity and strength, delivering high performance in demanding applications. Its capability to produce detailed features repeatedly makes it ideal for precision parts.
- Mill Lead Time: 7-10 days
- Color: Clear, black, white
PA
The good strength and favorable flowing characteristics of Nylon make it a suitable material for Low Pressure Molding. Its low-pressure processability allows for molding of tough, lightweight components with intricate geometries and even wall thickness. Nylon finds extensive application in under-hood automotive, gear housing, consumer electronics, and industrial connectors. Components such as cable clips, pump housings, and structural brackets with good wear and strength properties, for example, are well suited for repetitive, high-performance applications. Its reliability and versatility enhance overall production efficiency.
- Mill Lead Time: 7-10 days
- Color: Natural, black, gray
PEEK
PEEK is a high-performance polymer that has high performance in Low Pressure Molding because it has excellent thermal stability, chemical resistance, and very good flow when under controlled circumstances. The low pressure process can achieve complex, high-strength components with fine detail. Some applications are aerospace components, medical equipment components, test and measurement enclosures, and fluid handling components. For example, low-pressure molded PEEK components such as structural brackets, pump cases, and precision fittings demonstrate high performance in extreme environments, thereby making it a sought-after material for demanding applications.
- Mill Lead Time: 10-14 days
- Color: Natural, black, brown
PPS
PPS possesses better chemical resistance, thermal stability, and dimensional stability when Low Pressure Molding. Its stable flow properties enable molding complex, detailed parts under mild processing conditions. PPS finds its application in widespread use in electrical components, under-the-hood automotive components, industrial housings, and sensor housings. For instance, low-pressure molded PPS components such as circuit breaker housings, pump parts, and high-temperature connectors deliver abusive environment ruggedness with long life and reliability in harsh applications.
- Mill Lead Time: 10-14 days
- Color: Natural, black, gray
LCP
LCP is an ideal Low Pressure Molding material since it is a unique molecular structure that offers controlled flow and good dimensional stability. It can create complex, thin-walled components with excellent precision. LCP has widespread uses in high-frequency electronics, microfluidic components, automotive sensor covers, and precise connectors. For example, low-pressure molded LCP parts such as antenna covers, circuit board elements, and miniature fluidic channels exhibit high tolerances and resilience all the time, which are suited best to harsh electronic applications.
- Mill Lead Time: 6 days
- Color: Clear, Black, or Custom
Finishing Options for Low Pressure Molding
| Name | Applicable Materials | Colors | Can Be Applied with | |
|---|---|---|---|---|
|
Polishing | Rubber, Plastic, Composite | — | Buffing, Tumbling |
|
Painting | Rubber, Plastic, Composite | Custom Colors | Spray, Dip, or Brush Application |
|
UV Coating | Rubber, Plastic | Glossy, Matte | UV Curing Process |
|
Electroplating | Plastic, Metal | Chrome, Gold, Silver | Electroplating Bath |
|
Anodizing | Aluminum, Metal | Clear, Black, Gold | Media Blasting, Tumbling, Anodizing |
|
Silk Screening | Rubber, Plastic | Multiple | Manual or Automated Process |
|
Laser Etching | Rubber, Plastic | — | Laser Machines |
|
Bead Blasting | Rubber, Plastic, Metal | — | Sandblasting, Abrasive Blasting |
|
Surface Texturing | Rubber, Plastic, Metal | — | Mold Texturing, Laser Etching |
|
Vibratory Finishing | Rubber, Plastic, Metal | — | Vibratory Tumbling |
- *We offer a range of additional finishing options, including chromic acid anodizing, cadmium plating, copper plating, titanium anodizing (blue anodizing), gold plating, silver plating, and more. If you require finishes for materials not mentioned here, please reach out to us directly.
Your Low Pressure Molding Supplier Selection Ultimate Guide
Which low pressure molding supplier is ideal for your needs? What 3D printing material has excellent tensile strength? Try Materials. Download our lasted supplier guide.
Formioo Low Pressure Molding FAQs
We collect a lot of FAQs from our real clients, and please check out our FAQ page. For more information about Formioo Company, you can also download our company E-catalogue brochure.
What industries do you serve with Low Pressure Molding?
We serve the electronics, automotive, medical, and consumer product markets, providing precision components like connectors, sensors, and protective casings. To learn more about a specific industry, click on the industry.
Can you do prototyping in addition to high-volume production?
Yes, we offer both rapid prototyping and high-volume production to meet your project need at any stage.
What do you use for materials for Low Pressure Molding?
We utilize thermoplastics, elastomers, and engineering plastics like PP, PE, Nylon, and PEEK, based on your application.
What are your tolerances?
We have tolerances of a minimum of ±0.05 mm, which ensures high accuracy for sensitive components.
Can you work with custom designs?
Absolutely! We can handle custom designs and can work with your particular needs.
What are the certifications of the manufacturing partners?
We have ISO certified partners in our network, which ensures high quality standards.
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