Welcome to the official website of Sunlite Tech
Specialist in Elastomer Applications
Best Solutions to NVH SINCE 1998
Chinese rubber parts factory

News

Rubber Technology Guide – Complete Overview of Rubber Materials & Compounding Processes

Posted on5 December 2025

Rubber materials are widely used in automotive, electronics, electrical systems, industrial equipment, rail transit, and construction machinery, making them one of the essential materials in modern industry.

This page provides a systematic overview of rubber material types, physical performance parameters, rubber compounding systems, and vulcanization & processing technologies, helping customers better understand the technical specifications of rubber products for product selection, technical communication, and the development of custom rubber parts.

As an experienced NBR rubber manufacturer and EPDM rubber supplier serving global industries, we provide customized formulas and production services for various application environments.




1. Rubber Materials

Common industrial rubber materials include:

NR / Natural Rubber

SBR Rubber

BR Rubber

NBR Rubber

EPDM Rubber / EPM

CR Rubber

FKM / FPM (Fluoro Rubber)

Silicone Rubber / MVQ

PU Rubber (Polyurethane Rubber)

ACM Rubber (Acrylic Rubber)

CPE Rubber

CSM Rubber (Chlorosulfonated Polyethylene)

ENR (Epoxidized Natural Rubber)

These materials are used in a wide range of applications, including rubber vibration dampers, sealing components, battery pads, rubber tracks, and other industrial rubber products, supporting both prototype development and mass production of custom rubber parts.

As a professional NBR rubber manufacturer & EPDM rubber supplier, we design formulas tailored to industry-specific requirements.

 

2. Rubber Properties

Key performance parameters for evaluating rubber quality include:

Tensile Strength, Elongation at Break, Tear Strength, Modulus, Permanent Set, Resilience, Hardness,
Abrasion Resistance, Wet Skid Resistance, Heat Build-up, Mooney Viscosity, and Plasticity Retention Index (PRI).

These properties directly impact the product's reliability under high temperature, heavy loads, and complex working conditions—especially for automotive weatherstrips, industrial vibration absorbers, construction machinery seals, and other custom rubber parts.

 

3. Rubber Compounding System

A complete rubber formulation is composed of the following systems:

1) Reinforcing & Filling System

Including Carbon Black, Precipitated Silica / Fumed Silica, and organic reinforcing agents.
Their particle size, surface area, and surface activity significantly affect the strength and abrasion resistance of rubber products.

2) Functional Additives

Such additives include Accelerators, Activators, Antioxidants, Stabilizers, Plasticizers, Coupling Agents, and Surfactants.
A well-designed formulation is the technical foundation for producing high-performance NBR, EPDM, and other custom rubber parts.

 

4. Rubber Vulcanization Systems

Common vulcanization systems include:

CV (Conventional Vulcanization)

SEV (Semi-Effective Vulcanization)

EV (Effective Vulcanization)

Peroxide Cure Systems

Metal Oxide Cure Systems

Resin Cure Systems

Critical vulcanization parameters include Scorch Time, T90 (Optimum Cure Time), Induction Time, Reversion, and Blooming.

As an experienced EPDM rubber supplier and NBR rubber manufacturer, we select the optimal vulcanization system based on temperature resistance, oil resistance, weather resistance, and stability requirements.

 

5. Rubber Processing Technology

The main processing workflow for rubber products includes:

Mastication, Compounding, Two-roll Mixing, Internal Mixing, Calendering, Extrusion,
and Vulcanization.

These processes are widely used in producing rubber vibration dampers, automotive weatherstrips, rubber bearings, battery insulation pads, and various engineered rubber components—especially suitable for customized production of O-rings, damping blocks, battery pads, sealing strips, and other custom rubber parts.

 

6. Industry Applications

Rubber materials are used across various industries, including:

Automotive Parts

Rail Transit

Industrial Equipment

Electronics & Electrical Applications

New Energy Vehicles

Battery Systems

Machinery Manufacturing

We offer material selection, product design, and mass-production support for applications such as automotive seals, rubber vibration parts, industrial rubber mats, O-rings, and other custom rubber parts.

With over 20 years of experience as an NBR rubber manufacturer and EPDM rubber supplier, we provide comprehensive technical and manufacturing solutions for global customers.

Rubber Technology Guide – Complete Overview of Rubber Materials & Compounding Processes

Rubber materials are widely used in automotiveelectronicselectrical systemsindustrial equipmentrail transit, and construction machinery, making them one of the essential materials in modern industry.

Related News
Related Products

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.

  • captcha