How to Properly Prepare and Install a SIMMERRING® Seal – A Practical Guide

Introduction

The SIMMERRING®, also known as the Simmer ring, is a critical component in industrial and automotive systems. Though often overlooked, it plays a vital role in ensuring proper sealing and protecting mechanisms from contaminants. For a SIMMERRING® seal to perform optimally, correct selection, preparation, and installation are essential.

Preparatory Steps for SIMMERRING® Installation

1. Removing the Old Seal

Before installing a new SIMMERRING® seal, the old one must be removed. Avoid using sharp tools like screwdrivers, which can damage the shaft surface. Instead, opt for specialized tools such as the "claw" remover offered by CORTECO, designed specifically for safe and efficient seal removal.

2. Cleaning the Installation Site

The installation area must be thoroughly cleaned to remove any residue from the old seal or other contaminants. Recommended cleaning agents like OKS 2661 or OKS 2660 are fast-drying solutions that effectively remove grease, oil, and dirt without leaving residues.

3. Avoiding Improper Cleaning Agents

Never use solvents such as acetone, gasoline, or nitro thinners, as these can damage the shaft surface and compromise the oil film beneath the seal’s lip. This thin oil film, approximately one micron thick, is critical for proper lubrication and sealing.

4. Protecting the Shaft Surface

Clean the shaft carefully, avoiding abrasive materials. Use cellulose paper or a cloth moistened with a suitable cleaning agent to wipe away contaminants.

Choosing the Right Lubricant

To minimize friction during installation and avoid damage to the seal’s rubber ring, a proper lubricant must be applied. Recommended options include:

• FRETAX AF 281: A solvent-free, paraffin-based mounting gel that provides anti-corrosion protection, improves seal positioning, and enhances adhesion after drying.
• KLUBERPLUS S 06-100: A water-based gel designed for elastomers, providing temporary lubrication during installation and evaporating after the process.
• Isopropyl Alcohol and Water Mixture (1:1): A cost-effective alternative for short-term lubrication.

Avoid using oils or glycerin, as these can lead to the seal slipping under normal system pressures (0.3–0.5 bar).

Storing SIMMERRING® Seals

1. Storage Conditions

• Temperature: +5°C to +20°C.
• Protect from dust, direct sunlight, high humidity, and acidic environments, which can damage the seal’s metal components.

2. Handling

• Only remove seals from their packaging right before installation to avoid contamination.
• Handle the seal by its outer surface to prevent damage to the sealing lip.

Tools for Installation

Proper tools are essential for correctly installing SIMMERRING® seals. Many manufacturers, including CORTECO, offer installation kits that simplify the process while protecting the seal lip. Additionally, use protective collars or sleeves to shield sharp edges or grooves on the shaft during installation.

Installing the SIMMERRING® Seal

1. Surface Preparation

• Ensure the shaft is clean, dry, and free of oil or grease.
• For PTFE and FKM seals, the absence of lubrication is crucial to ensure a proper seal fit.

2. Positioning the Seal

• Align the seal co-axially with the shaft to avoid leaks or uneven wear.
• PTFE seals require at least four hours of rest after installation to allow the sealing lip to adapt properly to the shaft. This time may increase in colder environments.

3. Using Protective Collars

Use the plastic collars provided with the seal to guide it onto the shaft without damaging the sealing lip.

Common Installation Mistakes

• Modifying the Spring in Spring-Loaded Seals: Never cut or adjust the spring to increase tension, as this accelerates wear and reduces sealing performance.
• Skipping Surface Preparation: Failing to clean and degrease the installation area can lead to leaks and reduced seal lifespan.
• Misalignment: Incorrect positioning of the seal can cause uneven wear and fluid leaks.

Key Considerations for SIMMERRING® Installation

Proper installation of a SIMMERRING® seal is vital for maintaining the integrity and durability of industrial and automotive systems. Each step, from removing the old seal to positioning the new one, plays a critical role in ensuring optimal performance.

By following these guidelines, you can prevent leaks, enhance the longevity of your equipment, and maintain efficient operation. Remember, preparation, proper tools, and adherence to best practices are the keys to success.

Conclusion

Correct installation of a SIMMERRING® seal is not just about fitting a new component—it’s about ensuring the reliability and efficiency of the entire system. By focusing on proper preparation, using the right lubricants and tools, and following the steps outlined above, you can guarantee a secure and long-lasting seal. For all your sealing needs, visit Simmering.pl for expert advice and high-quality products.