Rubber sealed deep groove ball bearings have rubber seals installed on one or both sides and are pre-lubricated with grease. These bearings often Also, snap rings are sometimes used on the outside edge. rubber sealed deep groove ball bearings with their simple design, high resistance and low-maintenance, while many different retainers are available, pressed steel cages are most commonly used.
The primary function of the seal is to protect the bearing from contaminants, it is important to keep the bearing clean when you take it out of the packaging so you don`t contaminate it just by handling it. Another function is, of course, is to make sure the bearing retains the lubricant. because of the rubber lip that`s making contact with the inner ring, we have the rubber rubbing on the inner ring of the bearing, increasing the friction in the bearing.
Our rubber sealed deep groove ball bearings use unique design polyamide and steel cage, The inner/outer rings and retainer(cage) are thicker compare with the Common bearings, stronger rivet, which consist more reliable structure. strong impact and heavy load with Grinding groove and super finishing technology. to offer the long life under extreme harsh environment.
Sealed type: With one seal (-RS) on one side or two seals (-2RS) on both sides. Sealed bearings are supplied with a contacting lip seal that excels in protecting the bearing from liquids and other foreign contaminants. The inherent design creates friction, drag, and in turn heat; factors that require consideration in high speed applications.
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Pressurized dressing and hemostasis are the most commonly used methods for effective hemostasis. They are suitable for all parts of the body. The method of operation is to cover the wound with sterile gauze or a clean towel or cloth, and then tighten it with a bandage, a triangle towel or a city belt, and raise the limb. It can also be padded at the bend of the limb and then wrapped with a bandage. 
Why do you want to stop bleeding for trauma miners? What are the three types of bleeding?
Trauma usually causes bleeding, especially large arterial vascular injury, excessive bleeding, pale face, cold sweat, cold hands and feet, shortness of breath, and even life-threatening. Therefore, for such wounded people, we must first race against time, accurately and effectively stop bleeding, and then take other emergency treatment measures. Bleeding can be divided into three types: one is arterial hemorrhage, the blood is bright red, the frequency of the heart beats from the wound, the speed is very fast, and the harm is great; the second is venous hemorrhage, the blood is dark red or purple Suddenly, it flows out from the wound; the third is capillary bleeding, the blood is red, and it flows out of the wound like a waterdrop, and it can coagulate itself to stop bleeding.
Capillary and venous bleeding, usually wrapped in gauze, bandages, can stop bleeding. Large veins and arterial bleeding can be stopped by pressure bandaging.