The O-ring seal is made of nitrile rubber, silica gel, […]
The O-ring seal is made of nitrile rubber, silica gel, and fluorine rubber. It is used for dynamic seal (piston seal, piston rod seal) and static seal (axial seal) of hydraulic and pneumatic components. It is a widely used seal in hydraulic engineering (limited to low-speed rotary seal devices).
Seal manufacturer products
The O-ring is a sealing ring with an O-shaped cross-section that is installed in the groove and compressed appropriately. The O-ring is vulcanized and formed in the mold, and its size is usually defined by its inner diameter and cross-sectional diameter.
Compared with other sealing elements, O-rings have many advantages:
1. The structure is small and exquisite, and it is convenient to assemble and disassemble.
2. Low price and small size.
3. A large number of standard sizes are available in stock worldwide, which is convenient for maintenance and repair.
The main content of the O-ring seal design is the compression rate and extension of the cross-sectional diameter, which is of great significance to the sealing performance and service life. To form a good sealing effect of the O-ring seal, it is necessary to form a reasonable amount of compression and extension of the seal ring. Then the correct matching of the O-ring size and the groove size becomes an important factor. During the design and processing of the sealing device, if the O-ring compression is too large, the O-ring rubber stress will relax and cause leakage; if the compression is too small, it will cause leakage. Similarly, excessive stretching of O-rings during operation will accelerate aging and cause leakage. The standards of all countries in the world have stricter regulations on this.