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Shenzhen Precision Silicone Manufacturing

Custom Silicone Molding Services

Based in Shenzhen, China, Plasticpartsmfg provides precision silicone molding solutions for engineering prototypes, functional validation, and low-to-medium batch production. We process liquid silicone rubber (LSR), RTV, and high-consistency rubber (HCR) to meet tight tolerances, custom durometer specifications, and rigorous mechanical performance demands.

Request a DFM Review & Quote Technical Capabilities

Quick Engineering Specs ISO Metric

Standard Durometer
10 Shore A to 85 Shore A
Tolerance Standard
DIN ISO 3302-1 M2 / ±0.10 mm
Order Quantity
1 to 10,000+ Parts
Primary Materials
LSR, RTV, Food-Grade, High-Temp
Tooling Options
Aluminum Soft Tooling & Steel Molds
Accepted Data
STEP, STP, IGES, X_T, PDF Drawings
Fast quote turnaround within 24 hours on 3D CAD files.

Manufacturing Capabilities & Technical Parameters

Whether your project requires flexible prototype seals, medical equipment gaskets, overmolded electronic housings, or industrial vibration dampers, we align molding parameters with your product performance criteria.

01

Liquid Silicone (LSR)

High thermal stability, biocompatibility, and extreme dimensional accuracy for medical device components and outdoor enclosures.

20A - 70A Durometer
02

RTV & Compression

Ideal for low-volume prototypes, thick-walled parts, custom boots, and short-run production with minimal tooling investment.

Low Upfront Tooling
03

Silicone Overmolding

Chemical and mechanical bonding over rigid plastic substrates (PC, PA, PBT) and metal inserts for handles, buttons, and sealed ports.

Plastic & Metal Inserts
04

Finishing & Colors

Custom Pantone and RAL color matching, optical clear formulations, conductive additives, laser marking, and corona surface treatment.

Custom Textures & Pigments
Processes & Applications

Silicone Molding Solutions

Select a specific process or application requirement below to review engineering guidelines, tooling options, and production specifications.

From Drawing to Part

Production Quality Control & Verification

Our engineering staff in Shenzhen reviews your 3D geometry for draft angles, parting lines, flash control, and venting channels before tooling commences. We ensure predictable shrinkage rates across varying durometers to keep tight tolerances consistent.

  • ✓ Comprehensive DFM feedback on wall thicknesses, undercuts, and core pull requirements.
  • ✓ Raw material batch verification and durometer testing according to ASTM D2240 standards.
  • ✓ Optical CMM dimensional inspection reports and initial sample approval before batch runs.

Typical Industrial Use Cases

Industrial & Robotics

Vibration isolators, cable pass-through grommets, bellows, and custom suction cups.

Electronics & IoT

IP67/IP68 environmental seals, silicone keypads, port covers, and protective bumpers.

Medical Equipment

Laboratory fluid connectors, non-implant gaskets, valves, and ergonomic instrument grips.

Consumer Hardware

Wearable wristbands, soft-touch handles, cosmetic buttons, and food-contact accessories.

Direct Supplier Quote

Send Your CAD Files for Engineering Review

Submit your 3D models (STEP, STP, IGES) and 2D engineering drawings. Our technical sales engineers in Shenzhen will assess geometry, tooling suitability, lead times, and unit pricing based on your specified production quantity.

Non-disclosure agreements (NDAs) supported prior to drawing transmission.
Quotes provided within 24 business hours with DFM feedback.
Flexible payment terms and international air/sea freight logistics.

Supported Formats: STEP (.stp, .step), IGES (.igs), Parasolid (.x_t), SolidWorks, PDF drawings.

Standard Turnaround: Prototype tooling & first samples in 7-15 business days.

Inquiry & Quotation Form

Please provide part quantities, material durometer, and project requirements.