Flexible rubber seals are a common sealing element used to prevent leakage or penetration of liquids or gases at joints. It is made of flexible rubber material with good elasticity and sealing properties.
What is a flexible seal?
Flexible sealing refers to the use of the deformation and rebound characteristics of flexible materials to generate sufficient sealing pressure at the joint to achieve the sealing effect. This sealing technology generally uses a combination of metal sheets and flexible sealing gaskets to achieve the sealing effect through force deformation. Flexible seals can adapt to different joint shapes and surface conditions, making them suitable for connections of various sizes and shapes.
Flexible sealant is a special type of flexible sealing material. It has excellent flexibility, wear resistance, temperature resistance, corrosion resistance, oil resistance, water resistance and other characteristics, and can meet the sealing requirements under various environmental conditions. The main raw material of flexible sealant is silicone rubber, which has excellent flexibility, wear resistance, temperature resistance, corrosion resistance, oil resistance, water resistance and other characteristics.
Flexible sealants have a wide range of applications and can be used for sealing, protection, insulation, lubrication, etc. in automobiles, ships, machinery, electronics, chemicals, petroleum, metallurgy, textiles, food, medicine and other industries. At the same time, flexible sealants can be used in various pipes, pipe fittings, pumps, valves, bearings, turbines, automobile engines, automobile gearboxes, automobile braking systems, automobile tires, automobile air conditioning systems, automobile cooling systems, etc.
What materials are included?
Materials: Commonly used materials for flexible rubber seals include styrene-butadiene rubber (NBR), fluorine rubber (FKM), chloroprene rubber (CR), silicone rubber (VMQ), etc. Different materials have different temperature resistance, chemical resistance and mechanical properties, and the appropriate material can be selected according to specific needs.
structure
Common ones include O-rings, X-rings, square seals, lip seals, etc. These structural forms can meet the sealing requirements of different connection parts, such as axial seals, radial seals and surface seals, etc.
| Physical properties | |||
| Property | Test standard | Value | Unit |
| Hardness | ISO48 | 60+/-5 | IRHD |
| Elongation at break | ISO37 | 250 | % |
| Tensile strength | ISO37 | 6.5 | Mpa |
| Compression set-24 hours at 175℃ Slab | ISO815 | 20 | % |
| Low termperature resistance TR10 | ISO 2921 | -40 | ℃ |
| Ageing properties | |||
| Property | Test standard | ||
| Hardness change | ISO 188 | 5 | IRHD |
| Elongation at break change | -28 | % | |
| Tensile strength change | -16 | % | |
| Weight change | -2.35 | % | |
Sealing principle
Flexible rubber seals form an effective seal at the connection site through the elasticity and deformation capabilities of their materials. When subjected to pressure or deformation, the rubber seal is compressed and fills the sealing gap to prevent leakage of liquid or gas.
Application areas
Flexible rubber seals are widely used in various industries and fields, such as machinery and equipment, automobile industry, aerospace, petrochemical industry, medical equipment, etc. They can be used to seal bearings, valves, pipes, pistons, pumps, etc. to ensure normal operation of equipment and prevent leaks.
All in all, flexible rubber seals are a common and important sealing element that provide reliable sealing performance through the elasticity and deformation capabilities of their materials and are widely used in various industrial fields.
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