Construction and Design Solutions of Corteco Simmerrings – Advanced Rotary Shaft Sealing Technologies

Corteco simmerrings are some of the most essential components used in rotary shaft sealing. Their advanced construction and innovative design solutions meet the high standards required in industrial and automotive applications. This article provides a detailed look into the construction and design of Corteco simmerrings and their diverse uses across different work environments.

Basic Corteco Simmerring Constructions

Corteco simmerrings are designed in various configurations tailored to specific working conditions. Each construction type features unique characteristics, allowing efficient sealing for a wide range of applications:

1. BA = SC
   
   Simmerrings with an external rubber-coated surface, providing sealing in both pressure and vacuum conditions, as well as in split and lightweight metal housings. These are suitable for pressures up to 0.05 MPa.

2. B1 = SB = SB2
   
   Featuring an external metal surface, this design is used in applications with large forces that could push the seal out of its seat. It is also rated for pressures up to 0.05 MPa.

3. B2 = SA2
   
   A simmerring with a metal surface and reinforced casing, typically used for larger seal sizes.

4. BASL = TC, B1SL = TB2, B2SL = TA2
   
   Similar to the BA design but with an added dust lip to protect the main sealing lip from contaminants such as dirt and dust.

5. B1BASL
   
   A combination of the B1 and BA designs, this construction includes an additional dust lip that effectively prevents contamination, enhancing seal durability.

6. BAB = BABSL = TCV
   
   Simmerrings made for narrow spaces, resistant to pressures exceeding 0.05 MPa.

7. BAD
   
   An enhanced version of the BA design, suited for high-pressure sealing up to approximately 6.5 MPa, making it ideal for extreme working conditions.

8. BADUO DC,                    B1DUO DB,                         B1DUOOFSF
                                                        
   These are bidirectional seals with an elastomeric outer layer, allowing effective rotary sealing in both directions.

9. BAOF = VC,                    B1OF = VB2
                            
   Seals without a spring, featuring an outer elastomeric jacket, which perform well in low-load environments.

10. COMBI
    
    A multi-component seal made from different materials, used in rotary pipes with overlapping translational pipes. Ideal for dusty environments.

11. RWDR KASSETTE / RWDR-K7
    
    Consists of two parts: the main sealing ring and a counter ring, creating a durable unit with high contamination resistance for long-term use.

Specialized Design Solutions

Corteco also offers special construction variations that adapt simmerrings to particularly demanding conditions:

• …RS… / …RD… / …DRW…
  (Insert image of …RS… / …RD… / …DRW… here)
  Directional deflectors (left-turn, right-turn, and bidirectional) control fluid flow within the seal, enhancing efficiency.

• …X6… / …X7…
  (Insert image of …X6… / …X7… here)
  Designs with additional dust lips or external seals for increased protection against dust and dirt, improving sealing efficiency.

Materials Used in Corteco Simmerring Production

The choice of material is crucial for simmerrings, as it directly impacts resistance to external factors and seal durability. Corteco uses a variety of materials tailored to specific working conditions:

• NBR (Nitrile Butadiene Rubber) – Provides resistance to oils and greases, commonly used in standard seals. Operating temperature range: -30 °C to +100 °C.

• ACM (Polyacrylate Rubber) – Resistant to high temperatures and aggressive chemicals, used in engines and gearboxes. Temperature range: -25 °C to +150 °C.

• FPM (Fluoroelastomer) – Extremely resistant to high temperatures and chemicals, ideal for challenging environments. Temperature range: -20 °C to 200 °C (short-term up to 230 °C).

• VMQ (Silicone Rubber) – Withstands very low and high temperatures, used in applications requiring a broad temperature range. Range: -60 °C to +200 °C.

• PTFE (Teflon) – Exceptionally resistant to temperatures and chemicals, suitable for extreme conditions. Temperature range: -200 °C to +260 °C.

Applications and Advantages of Corteco Simmerrings

Corteco simmerrings find applications in various industry sectors:

• Automotive – Used in gearboxes, engines, and drive systems, where durability against oils, greases, and high temperatures is essential.

• Agricultural and Heavy Industry – Dual-lip and RWDR KASSETTE simmerrings perform well in harsh working environments, providing protection against dust and contaminants.

• Industrial Machinery – Thanks to a wide range of materials and constructions, Corteco simmerrings are ideal for machines requiring reliable sealing in diverse operating conditions.

Summary

Corteco simmerrings are technologically advanced seals that, through a variety of constructions and materials, meet the needs of even the most challenging work environments. With well-thought-out solutions, such as reinforced dust lips, rubberized external coatings, deflectors, and the ability to work under high pressures, these products offer exceptional durability and sealing efficiency. Corteco ensures every detail, making their simmerrings a reliable and efficient sealing element for rotary shafts.