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Jiangzhi offers custom rubber injection molding for both low-volume and end-use production. Typically, we use steel as the tooling material to ensure mold durability. Our mold costs start at only $500. Additionally, we provide a variety of elastomers, allowing you to choose the perfect material for your project.

Name Detail
Size 78.74in. x 59.05in. x 39.37in.
2000mm x 1500mm x 1000mm
Mold Cavities Single or multi-cavity
Mold Life Unlimited (We will open a new mold if the old one worn out)
Mold Storage Forever
Mold Material P20 Steel
General Tolerance Normally +/- 0.008in.(0.2mm)

Rubber Materials

  • Silicone
  • EPDM (Ethylene Propylene Diene Monomer)
  • Nitrile (NBR)
  • Neoprene (CR)
  • SBR (Styrene Butadiene Rubber)
  • Natural Rubber (NR)
  • Butyl Rubber (IIR)
  • Viton (FKM)


  • Softeners
  • Colorants
  • UV Stabilizers
  • Flame Retardants
  • Lubricants
  • Reinforcing Agents
rubber raw material
Finish Description
SPI A1 6000 grit diamond, surper high glossy finish
SPI A2 3000 grit diamond, high glossy finish
SPI A3 1200 grit diamond, normal glossy finish
SPI B1 600 grit paper, fine semi-glossy finish
SPI B2 400 grit paper, normal semi-glossy finish
SPI B3 320 grit paper, normal semi-
SPI C1 600 grit stone, fine matte finish
SPI C2 400 grit stone, medium matte finish
SPI C3 320 grit stone, normal matte finish
SPI D1 Dry blast glass bead, satin textured finish
SPI D2 Dry blast, dull textured finish
SPI D3 Dry blast, rough textured finish
part surface finishing

Key Rubber Parts Defects You Need To Know

Have you ever wondered about the most common rubber parts defects and how these could impact your projects? There are numerous different rubber parts defects, and these often arise during the molding process. Being aware ...
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Why Choose Us

Contract Manufacturing Solution

FAQs of Rubber Injection Molding

How long is the rubber injection molding cycle?

The whole injection moulding process usual lasts from 2 seconds to 2 minutes. There are four stages in the cycle. These stages are the clamping, injection, cooling and ejection stages.

While thermoplastics are usually injected around the melt temperature of the polymer to obtain the required flow of the material through a hot runner system, rubber compounds only admit temperatures between 70-110℃.

The pressure for rubber injection molding is approximately 150 to 220 bar, but it can be considered negligible because the mixing has not yet occurred.

Rubber is more difficult to inject into an injection mold cavity compared to plastic materials like ABS, PC, or PPS due to the differences in their physical and chemical properties.

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