I. the installation of the sealing ring shall be as follows:
1. Shore hardness of the sealing ring is 45 ~ 50 degrees, otherwise it will be considered as failure. The layered side of the sealing ring should be oriented into the wiring cavity, otherwise it is not in good condition (except coal electric drill).
2. The width of the sealing ring shall not be less than 0.7 times the outer diameter of the cable, and shall not be less than 10mm.
3, line mouth pressure margin, line mouth and sealing ring between the metal washer.
4. The sealing ring is not damaged and shall not be cut for use. No other object shall be wrapped between the cable and the sealing ring.
5. Seal and press the terminals without cables with sealing rings and steel baffles with thickness no less than 2mm. The sealing ring is placed in the steel baffle.
6. The size of the sealing ring shall meet the following requirements. Any failure to meet the requirements shall be considered as failure:
A. if the outer diameter of the sealing ring is less than or equal to 20mm, the difference between the outer diameter of the sealing ring and the inner diameter of the wiring device is less than or equal to 1mm
B. If the outer diameter of the sealing ring is less than 60mm or more than 20mm, the difference between the outer diameter of the sealing ring and the inner diameter of the wiring device is less than or equal to 1.5mm
C. If the outer diameter of the sealing ring is greater than 60mm, the difference between the outer diameter of the sealing ring and the inner diameter of the wiring device is less than or equal to 2mm
D. The difference between the inner diameter of sealing ring and the outer diameter of cable is less than 1mm.
E. The thickness of the sealing ring shall not be less than 0.3 times the outer diameter of the cable (except the cable of 70mm2), and not less than 4mm.
Ii. Precautions for installation and use of sealing ring:
(1) prevent overdue use. The service life of rubber seals with dynamic seals is generally 3000 ~ 5000h, and a new sealing ring should be replaced in time.
2) avoid using old sealing rings. When using a new sealing ring, also want to carefully check its surface quality, determine no holes, bumps, cracks and grooves and other defects and enough flexibility after use.
(3) when replacing the sealing ring, check the groove of the sealing ring strictly, remove dirt and polish the bottom of the groove.
(4) cannot install the wrong direction and destroy the lip edge. A bruise more than 50 microns from the lip can cause a noticeable oil leak.
(5) prevent mandatory installation. Do not use a hammer, but use a special tool to press the seal ring into the hole, and then use a simple cylinder to protect the lip through splines. Before installation, apply lubricating oil to the lips to facilitate installation and prevent burns during initial operation. Pay attention to cleaning.
(6) the dimensions of sealing ring replacement should be consistent. To strictly follow the requirements of the manual, choose the same size of the sealing ring, otherwise can not ensure the tightness and other requirements.
(7) during installation, all parts of the open hydraulic system should be cleaned strictly, and it is best to use special tools to prevent fingers from being scratched by sharp metal edges.
(8) in order to prevent damage and oil leakage, the operation must be in accordance with the procedures, and the machine should not be overloaded for a long time or put in a relatively bad environment.
The sealing ring is widely used in various industries such as hardware plastic, water supply and drainage, fire control, ship, pharmaceutical, household appliances, toys, electronics, sports equipment and sanitary ware. In life and work, we can see everywhere, but how to install the sealing ring, there are any matters needing attention, is easy to be ignored by us. And the details of the neglect, often will cause big problems, so we need to know what the sealing ring installation and use precautions.
1. Before installation, all parts of the open hydraulic system should be cleaned strictly. It is best to use special tools to prevent fingers from being scratched by sharp metal edges.
2, can not be installed in the wrong direction and damage the lip, lip if there is too large scar, it may lead to obvious oil leakage.
3, not mandatory installation, to pay attention to the degree of cooperation, can not use a hammer, and to use a special tool to press the seal ring into the hole, and then use a simple cylinder to protect the lip through spline parts. Apply some lube to lips before installation.
4, to prevent out-of-date use, sealing ring aging period, it should be replaced in time, and ensure the size of the same.
5, avoid the use of old sealing ring, the use of new sealing ring, also want to carefully check the surface quality, determine no holes, bumps, cracks and grooves and other defects, and have enough flexibility before use.
7. In order to prevent damage and oil leakage, it must be operated in accordance with the rules, and the machine must not be overloaded for a long time or put in a bad environment.