In ancient near eastern times, people used cylinder seals as a type of signiture for documents. The cylinder seal was made of clay or rock and had reliefs carved into them.
The purpose of a cylinder seal is to write signatures in early times.
The most common kind of seal in Sumer was the cylinder seal. These seals were typically made from stone or other hard materials and were used by individuals to mark or authenticate documents and goods by rolling the seal across wet clay.
Brake wheel cylinder or axle sealBrake wheel cylinder or axle seal
In the early period in Ancient Mesopotamia, they were used for picture story. At the later period, they were used for Signatures.
They are used to seal motors or machines and rotatin pump shaft or hydraulic cylinder pistons.
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The head gasket is used to seal between the engine cylinder head and the engine block
a seal (i.e seal) between the cylinder and the head on a car
The 15XT has a built in seal.
Apply a finish to the Aluminum alloy cylinder. Recommend an annodize treatment. Another alternative is to install a bronze ring under the seal, if possible.
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