What is HCR?
HCR stands for High Consistency Rubber or Heat-Cured Rubber. It is primarily formulated from gum, silica, plasticizers, and additives, providing a versatile material for various applications.

General Information
HCR Silicone Rubber exhibits exceptional thermal stability, withstanding temperatures up to 300°C and cold resistance down to -50°C. Some specialized grades can endure temperatures exceeding 300°C or as low as -120°C. It also possesses excellent electrical properties, making it suitable for diverse applications.

 Typical Properties
- Hardness:20~80 Shore A
- Mechanical Strength: 7~10 MPa
- Elongation: 200~800%
- Tear Strength: 15~40 N/mm

Processability
HCR is processed through kneader mixing, followed by color and catalyst addition on a 2-roll mill, and filtration.

1.Electric Insulation Silicone Rubber
Our electric insulation silicone rubber is manufactured according to the DL/T376-2010 standard and certified by leading institutes. It features:
- Excellent physical and mechanical properties
- Superior electrical insulation and hydrophobicity
- High aging resistance
- Outstanding surface adhesion and gloss

TDS of  Electric Insulation Silicone Rubber

This product is pre-formulated with a curing agent, requiring no additional components during processing. Custom colors and packaging options are available.

Applications: 

Ideal for injection molding and compression molding of high-voltage insulators, composite arresters, and other power transmission equipment.

Processing Technology:
- Curing Condition: 170°C for 6 minutes
- Mold Temperature:145°C-165°C for optimal results
- Molding Time:5-15 minutes, depending on the size

Packaging:
- Available in 500KG and 25KG cartons
- Storage: Keep at room temperature (below 25°C), avoid water contact and sunlight
- Expiry Date: 10 months; suggested usage within 3 months. Can be remilled after expiry and requalified.

 

2.Fire Retardant Silicone Rubber
This series provides:
- Excellent mechanical properties and processability
- Compliance with UL94-V0 flammability standards and REACH environmental tests

Applications:Suitable for fire retardant silicone rubber gaskets, sealing rings, wire sleeves, and other electrical components requiring stringent safety measures.

TDS of  Fire Retardant Silicone Rubber

 3.Fumed Silicone Rubber
Our fumed silicone rubber offers:
- Excellent mechanical and processability properties
- Environmentally friendly certifications, including RoHS and REACH

Applications:Used in kitchen tools, seals, electric wires like water bottle,seal ring, O ring and medical tubing with high tear resistance.

TDS of  Fumed Silicone Rubber

Processing Technology:
- Curing Condition:170°C for 10 minutes
- Suitable for: Pressing, injection molding, extrusion, and calendering.

Packaging:
- Available in 20KG cartons
- Same storage and expiry conditions as mentioned above.

 

Liquid Silicone Rubber (LSR)

What is Liquid Silicone Rubber?
Liquid Silicone Rubber (LSR) is a highly versatile elastomer known for its exceptional mechanical properties, thermal stability, and biocompatibility. It is produced by a two-component system that is cured at elevated temperatures, resulting in a material that can be molded into complex shapes with precision.

General Information
LSR offers superior resistance to extreme temperatures, ranging from -60°C to +200°C, making it ideal for applications in harsh environments. Its low compression set and excellent aging properties ensure longevity and reliability in various applications.

Key Properties
- Hardness Range:10~80 Shore A
- Tensile Strength:Up to 10 MPa
- Elongation at Break: Up to 600%
- Tear Strength:20~40 N/mm
- Chemical Resistance:Excellent resistance to water, UV light, and ozone

 Applications
- Common industry sundries
- Kitchen appliances
- O-rings
- Silicone rubber gifts and toys
- Baby products like milk bottles, nipples, teethers, and primary color kitchenware

Processability
LSR is processed using advanced injection molding techniques that allow for high-speed production and intricate designs. Its flow characteristics enable it to fill molds completely, minimizing waste and enhancing production efficiency.

TDS of  General liquid silicone rubber

2.Liquid Silicone Rubber for making silicone infant products
This series applies to platinum-cured, addition-type, two-component common fumed transparent liquid silicone rubber for injection molding processes. Key features include:
- Fast curing speed and high efficiency
- Excellent light transmittance
- Exceptional rebound resilience
- Excellent heat stability and weather fastness (operating temperature: -60°C to 200°C)
- Yellow-stain resistance
- Heat aging resistance
- Excellent mobility and injection properties
- Compliant with FDA, RoHS, and LFGB standards
- Low VOC

Processing Technology
- Mixing Ratio: 1:1 weight mixing
- Test Conditions:Mold temperature of 120°C, curing time of 5 minutes

Packaging
- Packaging Options:Available in 20 kg barrels or 200 kg drums
- Storage Conditions:Room temperature (below 30°C), do not contact water, avoid sun exposure
- Expiry Date:12 months; best to use within 6 months

liquid silicone rubber TDS for making infant products

3.Self-Lubricating LSR
self-lubricating liquid silicone rubber with 2-4% fluid content for injection molding processes that provides a lubricious surface.

Features:
Self lubricating
High thermal stability
Flexibility at lower temperatures
Resistance to ageing
Non combustible

Self-Lubricating LSR data Sheet for example

Density: 1.11 g/cm³
Hardness, Shore A: 33
Tensile strength, N/mm²: 10
Elongation at break, %: 730
Tear strength, N/mm: 26
Compression set (22h at 175°C), %: 25

Liquid Silicone Rubber (LSR) is the material of choice for industries demanding high-performance elastomers. With its outstanding properties, ease of processing, and versatility, LSR meets the rigorous demands of modern applications across various sectors, including medical, automotive, consumer goods, and industrial.

For inquiries or to discuss specific applications, please contact us to explore how our HTV silicone rubber and LSR solutions can meet your needs!