HG 2330-1992 Rotary Shaft Lip Seal Storage, Maintenance and Installation HG2330-1992 Standard Download Decompression Password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG 2330—92
Lip seals for rotating shafts
Storage, maintenance and installation
Published on June 1, 1992bZxz.net
Ministry of Chemical Industry of the People's Republic of China
Implementation on July 1, 1993
Chemical Industry Standard of the People's Republic of China
Lip seals for rotating shafts
Storage, maintenance and installation
HG2330—92
This standard is equivalent to the international standard ISO6194.3-—1988 "Lip seals for rotating shafts Part 2: Storage, maintenance and installation", 1 Subject content and scope of application
This standard specifies the requirements and methods for the storage, packaging, maintenance and installation of rotary shaft lip seals (hereinafter referred to as seals). This standard applies to the storage, maintenance, installation, and various hazards and prevention methods of seals. 2 Reference standards
GB13871 Basic dimensions and tolerances of rotary shaft lip seals 3 Storage
3.1 Seals should be properly stored, because storage will affect the performance of the seal and directly affect the service life of bearings and other valuable mechanical parts. The hazards that seals may encounter during storage include: high or low temperatures, ozone, radioactive materials, smoke, insects, rodents, dust, sand, mechanical damage, etc. 3.2 The sealed warehouse should be kept cool (below 30℃). The average humidity is 40%~70%. Too much humidity can also cause some sealing ring materials to deteriorate, and the metal skeleton and elastic material of the sealing ring can also be damaged by corrosion. 3.3 The sealing ring should be stored according to the principle of "first in, first out". Because even under ideal storage conditions, long-term storage can cause material deterioration.
3.4 ​​To delay ozone aging, the sealing ring should be kept away from direct light or reflected light, as well as electrical equipment that may produce ozone. Excessive heat or ozone erosion will cause the sealing ring to age and reduce its service life. 3.5 To prevent the aging of the sealing ring material, the sealing ring should be protected from radioactive materials and smoke. 3.6 The sealing ring should be protected from insects and rodents. 3.7 The sealing ring should be stored in a suitable place and should not be placed in the working area to avoid mechanical damage caused by equipment or falling objects. 3.8 When stacking paper boxes with sealing rings, pay attention to the right amount to avoid overweight and crushing the sealing ring at the bottom of the box. 4 Packaging
4.1 The sealing ring should be packed in different reliable and economical packaging methods to ensure that it is not damaged during transportation and storage. The specific requirements shall be agreed upon by both the supply and demand parties.
4.2 Commonly used packaging methods include bagging, boxing or boxing. When unpacking, do not use sharp tools such as knives, scissors, screwdrivers, etc. to prevent cutting or tearing the sealing ring
4.3 Before the installation preparation is completed, the sealing ring should not be removed from the packaging to avoid damage, confusion of marks and pollution. 5 Maintenance
5.1 The sealing ring should be carefully maintained after removing the packaging. Prevent damage before assembly. In particular, it is necessary to strictly prevent damage to the lip of the sealing ring. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992 and implemented on July 1, 1993
HG2330-92
5.2 It is absolutely not allowed to hang the sealing ring with wire, string, etc. or hang the sealing ring on the hook to avoid damaging the sealing lip and affecting the seal.
5.3 The exposed skeleton sealing ring is easy to damage the rubber part of the adjacent sealing ring, so it must be properly maintained. 5.4 The sealing ring should not be mixed with other workpieces and piled on the workbench to avoid being contaminated by sand, debris or other foreign matter. The pre-lubricated sealing ring should be kept clean. 5.5 When cleaning the sealing ring, the user should use the appropriate cleaning fluid and method recommended by the manufacturer to avoid damage to the sealing ring and failure. 6 Installation of the sealing ring
6.1 The sealing ring should be checked before installation to ensure that the sealing ring is clean and intact. 6.2 The lip of the sealing ring should be coated with a suitable clean lubricant before installation. The sealing ring used for dust prevention should be coated with appropriate grease. 6.3 Normally, the front surface of the sealing lip of the sealing ring should face the sealed liquid. 6.4 The shaft end and the hole in the cavity should have a guide chamfer that complies with the provisions of GB13871. 6.5 The verticality of the installation is a characteristic factor of the sealing ring. The verticality is achieved by pressing the sealing ring into the cavity to be flush with the front end face of the cavity hole or against the bottom end face of the cavity hole shoulder. 6.6 The installation tool for pressing the sealing ring into the installation position is shown in Figure 1. The reference surface
Installation tool
Figure 1 Installation of the sealing ring
Through the hole: the installation tool that reaches the end face of the cavity hole 6.7 The installation of the sealing ring can be generally flush with the front end face of the cavity hole, or close to the bottom end face of the cavity hole, as shown in Figures 2 and 3, but in both cases, the reference surface for installation positioning should be a machined surface. Unprocessed reference surfaces cannot be used to avoid the seal ring from being installed skewed.
Minimum fillet at the bottom
Reference surface
HG2330—92
Figure 2 Installation of seal ring
Bottom hole: seal ring reference reaching the bottom surface of the cavity
Figure 3 Installation of seal ring
Installation tool reaching the shaft end through the hole
6.8 The installation method of reversely installing the seal ring into the cavity is shown in Figure 4a~d. Instructions for use
1) According to the actual situation in China, this standard adds the method shown in Figure 4d to the installation method. Installation tool
Installation tool
Bottom rosette angle
Reference surface
Bottom minimum round angle
Reference surface
HG233092
Figure 4a) Bottom hole: The sealing ring reaches the bottom surface of the inner hole of the cavity Figure 4b) Bottom hole: The sealing ring reaches the bottom surface of the inner hole of the cavity Installation tool
HG2330-92
Reference surface:
Figure 4e) Through hole: The sealing ring reaches the end face of the inner hole of the cavity Installation tool
Installation tool
6.9 During the installation process, any surface over which the lip of the sealing ring slides should be smooth and undamaged. If the sealing ring is to slide over a shaft with splines, keyways or holes, the special installation tool shown in Figure 5 should be used. This special tool should not be made of soft metal (such as aluminum), and installation tools with notches are not allowed.
HG2330-92
Figure 5 Installation tools used for sealing rings sliding over shafts with splines, keyways or holes 6.10 If the mating part (shaft) must be forced to pass through the working surface of the sealing ring, the diameter of the sliding part of the shaft can be reduced by 0.2mm. The sealing ring designed for the original shaft can still be used without affecting its sealing performance. See Figure 6. 6.11 When installing the inner skeleton sealing ring, a thin layer of suitable lubricant should be applied to the outer edge of the sealing ring to facilitate the installation of the sealing ring into the cavity. During the assembly process, a uniform speed and pressure should be used to prevent the spring from falling off. 6.12 If the sealing ring must be installed at low temperature, the sealing ring can be installed on a clean and dry surface below 50°C. Place it in the same liquid as the sealing liquid for 10 to 15 minutes to restore the elasticity of the sealing ring lip. po
HG2330-92
Figure 6 Installation of sealing ring-matching parts forced through the working surface of the sealing ring 6.13 When replacing the failed sealing ring with a new sealing ring, the sealing lip of the new sealing ring should not coincide with the previous rotation trajectory, but let the new sealing lip be closer to the sealed liquid side. This can be achieved by installing gaskets, changing bushings and slip rings, and changing the depth of the pressure cavity.
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China, and this standard is under the jurisdiction of the Northwest Rubber Industrial Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by the Northwest Rubber Industrial Products Research Institute of the Ministry of Chemical Industry. The main drafters of this standard are Zhao Zhirong and Li Zongqi. People's Republic of China
Chemical Industry Standard
Lip Seal Ring for Rotating Shaft
Purchase, Storage, Maintenance and Installation
HG2330--92
Editor Chemical Industry Standard Editorial Department
(Institute of Standardization, Ministry of Chemical Industry)
Postal Code: 100013
Printer Standardization Institute, Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format 880×12301/16 Printing Sheet Number of Words 14000 First Printing in February 1992
First Edition in December 1992
Print Quantity 1-500
HG2330-92
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