Precautions for fireproof expansion sealing strips

First of all, the importance of materials

High-end energy-saving doors and Windows are mostly made of materials such as EPDM and Sandu, and some manufacturers also choose high-quality and reasonable silicone fireproof expansion sealing strips. These fireproof expansion sealing strips are all rubber-based and far superior to traditional PVC (plastic-based) sealing strips in terms of performance and lifespan.

Second, the importance of corresponding mouth shape design

Silicone rubber is a continuous extrusion product. It is of great significance to adjust the formula of the sealing strip steel according to physical properties (such as hardness, pressure change rate, etc.) and conduct qualitative and quantitative design of the mold. Good rubber without a reasonable shape design cannot fully exert the advantages of silicone sealing.

Third, the importance of dimensional tolerances

Due to the elasticity of silicone, excessive drawing or extrusion during product molding, packaging, storage and transportation can lead to dimensional tolerances. However, the product is within the allowable tolerance. Qualified silicone rubber products show no size difference to the naked eye or touch.

Installation methods and precautions for fireproof expansion sealing strips

I. Installation Method

Installation of fireproof expansion sealing strips

1. Don't get the direction wrong and damage the lips. Scratches of more than 50 meters on the lip will cause obvious oil leakage.

2. Prevent forced installation. Instead of hammering in with a hammer, use a special tool to press the sealing ring into the positioning hole, and use a simple cylinder to pass the lip through the spline part. Before installation, please apply lubricating oil to your lips to prevent injury during the initial operation. Pay attention to cleaning.

3. Prevent overuse. The rubber gasket of dynamic sealing is generally used for 3,000 to 5,000 hours and needs to be replaced with new packing immediately.

4. Adjust the size of the sealing ring. In order to strictly follow the requirements of the manual, please select the sealing ring of the same size. If this is not done, the requirements such as the degree of oppression cannot be guaranteed.

5. Avoid using old fillers. When using new sealing rings, it is also necessary to carefully inspect the surface quality to ensure there are no small holes, protrusions, cracks, grooves or other defects, and that they have sufficient elasticity before use.

When installing fireproof expansion sealing strips, all parts of the open hydraulic system should be strictly cleaned. Special tools should be used to avoid sharp metal edges from scratching fingers.

7. When replacing the packing, strictly inspect the packing trough, remove dirt and grind the bottom of the trough.

Ii. Precautions for Fireproof Expansion Sealing Strips

1. Clean the installation location; Remove burrs during the installation movement of the sealing ring;

2. Apply lubricant to the seal. Protect the sealing surface from damage;

3. Confirm that the size of the sealing ring is correct; For seals that need to be installed in deformation, use appropriate tools for installation.