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Rubber seals on doors and windows are good to improve heat and sound insulation. They ensure tightness of the joint of the contacting surfaces. In addition, they soften the touching points of surfaces. Moreover, it reduces depreciation. The noise from closing rubber-filled windows and doors is also significantly less. High-quality seals from Rubber Seals Suppliers last 10 years or more without requiring replacement.
Modern metal doors must be equipped with a seal. This accessory softens the touch of a metal door with a jamb, protects the room from extraneous sounds and odors, and increases the level of thermal insulation in the apartment.
Rubber seals are resistant to temperature changes inside and outside the premises. If we correctly select and well fixed on the door, the products will not crack due to the influence of external conditions.
In the catalog of Rubber Seals Suppliers online store you will find a wide range of rubber door seals. If you suddenly have any questions about choosing a product, you can contact responsive consultants.
Rubber seals for cars
Rubber seals for car doors are an essential accessory. They make the door contour airtight, prevent the penetration of road noise and gas exhaust into the passenger compartment. In addition, they soften the popping sound when the door is closed.
The goods of this group mainly depend on car factories, service workshops, as well as auto parts stores. In the catalog of our online store you can find various seals for machine doors, as well as order the manufacture of a batch of goods in bulk.
Each person, using the refrigerator, paid attention to the rubber “accordion” on its door. The main task of this part is to ensure a tight contact between the door and the case in order to maintain the tightness inside the refrigerator.
Deprived of this seemingly insignificant detail, the refrigerator will become useless. In a leaky compartment of the refrigerator, we cannot maintain the optimum temperature. Therefore, in case of defects, you should change the part as soon as possible. It is to ensure a snug fit of the case and the door.
Modern PVC windows are highly airtight. You can buy them from China famous Rubber Seals Suppliers. And all this thanks to the well-thought-out design of PVC windows. It also uses rubber seals. They are not visible from the outside and from the inside when the window is off.
These parts protect the structure of the window itself from the ingress of condensation. It forms due to temperature changes on both sides of the window. If water gets inside the window frame, it can wear out prematurely. That is why it is important to inspect the rubber window seals and change them in time. Although the average service life of products is 30 years or more under conditions of correct use.
Other interesting properties of PVC window seals:
Long seals – seals of various cross-sections, exceeds 1 meter. To make them on conventional presses, more than one mold or re-docking is important.
Rubber Seals Suppliers use long seals to seal both fixed and detachable joints. That is, to ensure the possibility of opening and closing flaps, covers, doors during operation.
The cross-section of the seals, depending on the purpose, can have any configuration.
Manufacturing technology of long seals
The billets of long seals after the rubber mixer go to the worm machine. Vulcanization of seals goes through in presses using molds. With the boiler method, vulcanization goes on in a vulcanization boiler with pre-stacking on baking sheets.
Shrinkage of the rubber compound plays an important role. Shrinkage in length is not significant in itself; since the product is lengthy. But it has a very significant effect on the shape and dimensions of the section.
In addition, the quality of long rubber goods is determined by the total shear. The material undergoes during processing at various stages. It includes rubber compounding in a rubber mixer, rolling and extrusion of shaped blanks.
A flat gasket is the simplest type of seal for permanent connections. The section of the gasket is a rectangle. The ratio of the width of the section and its height, characterized by the shape factor, determines its performance.
Rubber Seals Suppliers usually ensure sealing of the joint by compressing the gasket by 25-35%. The thinner the gasket, the higher the requirements for the quality of metal and rubber workmanship.
This type of long-length seals is common in large-sized joints. With a perimeter of several meters or tens of meters, in which there are large gaps (up to 6 mm). In this case, the contacting surfaces can move in the longitudinal as well as at an angle.
The differential pressure mainly acts on one side of the seal. However, since differences are possible on the other side, the seals must be double-acting. In this case, the pressing forces of the movable element of the assembly (cover, door, sash, etc.), and, consequently, the rigidity of the sealing element should be small.
Traditional compression seals, such as gaskets and O-rings, are not suitable. Since, firstly, they have high rigidity and require high pressing forces, and, secondly, it is necessary to use seals of a large section. Therefore, in such joints, hollow seals or seals with a complex cross-section with a sealing mustache are common to use.
When extruding hollow seals from rubbers based on silicone rubbers in a worm machine, the rigidity of their blanks in the raw state is small. As a result of which the configuration and dimensions of the profile section change when laid on a baking sheet.
Long seals with large gaps are made by re-docking on several molds and then joined along the
These seals can have a simple form in the form of a tape of any length with nubs at the ends. When Rubber Seals Suppliers install in the assembly, the sealing element is bent over the section and fixed with clamping strips. In the working position, it takes the shape of a horseshoe. Docking is done in a direct mold. The sealing of such a seal is called free.