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Submersible Pump O-Ring - Professional rubber compounding & rubber seal support - Linde

About Submersible Pump O-Ring

The submersible pump O-ring is circular seals usually made of rubber or other flexible materials. These seals act as barriers to prevent leakage of liquids and gases in submersible pump systems. Although the O-ring is small in size, it plays a critical role in maintaining the integrity of your submersible pump. They ensure a watertight seal, preventing water from entering the pump and causing damage.

Material FKM Density 1.78~1.84 g/cm3 Tensile strength 16Mpa Elongation at break 200% Tear strength 22 KN/m Compression set 38% Glass transition temperature-20Tg, ℃ Brittle temperature 30℃, ASTM D2137

Sealing Principle

The sealing principle of the submersible pump O-ring is extrusion sealing. The compression rate and stretching amount of the cross-sectional diameter of the O-ring are the main contents of the seal design, which are of great significance to the sealing performance and service life. The O-ring is an extrusion seal. The basic working principle of the extrusion seal is to rely on the elastic deformation of the seal to cause contact pressure on the sealing contact surface. If the contact pressure is greater than the internal pressure of the sealed medium, there will be no Leakage, otherwise leakage occurs.

Features

1. Good sealing performance: O-ring has good sealing performance and can effectively prevent liquid leakage.
2. Wide scope of application: Submersible pump O-rings are suitable for various media such as oil, water, gas, organic chemicals or other mixed substances.
3. Both dynamic and static sealing can be used: O-rings can be used for both static sealing and dynamic sealing.
4. Static seal has almost no leakage: In static seal, O-ring has almost no leakage.
5. A single piece uses two-way sealing: As a single component, the O-ring can achieve two-way sealing.
6. Small dynamic friction: In dynamic sealing, the dynamic friction of the O-ring is small.

Structure Design

The following are the structural design details of the submersible pump O-ring:

1. Material selection: The material selection of the submersible pump O-ring mainly considers its high temperature resistance, corrosion resistance, wear resistance and other properties. Commonly used materials include NBR or FKM, etc.
2. Shape and size design: The shape of the submersible pump O-ring is circular, the cross-section is circular, and it has good sealing performance. In terms of size, O-rings have different specifications according to different pump body and groove sizes to ensure that they can fit tightly in the groove.
3. Installation and use design: O-rings need to be installed correctly in the corresponding grooves. During the installation process, you need to pay attention to cleaning the grooves and O-ring surfaces, and use appropriate tools to press the O-rings into the grooves to avoid Overstretched or compressed O-ring.
4. Mechanical strength: The submersible pump O-ring needs to have a certain mechanical strength and be able to withstand the effects of liquid pressure and friction to ensure its sealing performance and service life.

Classification

Submersible pump O-rings can be classified according to different standards. The following are several common classification methods:

1. Classification according to materials: According to the materials used, submersible pump O-rings can be divided into nitrile rubber O-rings, fluorine rubber O-rings, silicone rubber O-rings, acrylic rubber O-rings, etc. O-rings made of different materials have different characteristics and are suitable for different working environments.
2. Classification according to specifications: According to different specifications and sizes, O-rings can be divided into models of different specifications. Different specifications of O-rings have different cross-sectional diameters and heights, suitable for different groove sizes and sealing needs.
3. Classification according to working conditions: According to different working conditions such as working pressure, temperature, medium and other conditions, O-rings for submersible pumps can be divided into high-pressure O-rings, low-pressure O-rings, high-temperature-resistant O-rings, and resistant O-rings.

In short, the classification method of submersible pump O-rings can be selected according to actual needs. O-rings of different classification methods have different characteristics and scope of application.

Material FKM Density 1.78~1.84 g/cm3 Tensile strength 16Mpa Elongation at break 200% Tear strength 22 KN/m Compression set 38% Glass transition temperature-20Tg, ℃ Brittle temperature 30℃, ASTM D2137

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