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Valve Stem Seal

Nissan Viton Automotive Valve Stem Seals China Manufacturer
Valve Stem Seal

Nissan Viton Automotive Valve Stem Seals China Manufacturer

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  • Nissan Viton Automotive Valve Stem Seals China Manufacturer
  • Nissan Viton Automotive Valve Stem Seals China Manufacturer

Description

Product Description

Valve stem seals are devices that provide a defined metering rate of oil to the valve stem interface of internal combustion engines to lubricate the valve guide and minimize engine missions.  valve stem seals are available for diesel and gasoline engines with and without boosting.

GOS offers to standard designs of “state-of-the-art” valve stem seals:

Non-integrated seal: fulfils the function of oil metering

Integrated seal: additionally incorporates a spring seat to prevent wear on the cylinder head

JAPANESE CAR VALVE STEM SEAL LIST
NISSANTOYOTAOEM MITSUBISHISUZUKIISUZU
13207-2100213207-2100013207-81W0013207-40F0090913-0206690913-0207190913-0208990913-02088MD000508MD070695MD19746709289-070055-12569-0010
13207-53Y1013207-5H60A90913-0205390913-0205790913-0203890913-0206590913-0202390913-0209490913-02023MD17917509289-05003894470-94608-97146733-08-94324158-0
13207-H720113207-H720013207-V170013207-H230113207-0B00190913-0208990913-0206290913-0211990913-0209590913-02088MD30734209289-0501209289-050139-12569-055-0
13207-7620013207-7620113207-7620390913-02092MD30734109289-060128-94396-609-28-94369-609-1
13207-53F0013207-D010013207-D010113207-D011113207-2B50013207-6O00090913-02051ME203255MD115472MD306078MD016490MD306079MD30734309289-07007K5-12569-004-08-97120-307-0
13207-53Y1013207-D420013207-71J0513207-4F10013207-00Q0A13207-84A0090913-02072MD307343
5-12569-001-1
13207-V1700
ME024108

13207-01M0013207-01M0113207-01M1090913-02100


13207-ED00013207-CJ40A13207-53Y0090913-02067


13207-D011190913-02024


13207-7620090080-31085


13207-53Y0090913-0220090080-31043


13207-D420090913-02033


13207-81W0090913-02111


13207-Z550190080-31064


13207-4F10590080-31065


13207-CJ70A90913-06096


13207-D011190913-0206490913-02060



90913-02051



90048-12011



90913-0209790913-02105


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What factors influence the performance of industry rubber seals

The sealing effect of the sealing ring is related to the material characteristics of the sealing ring. There is also a close influence on other factors. For example, the speed of rotation, working temperature, working pressure, working medium, etc., today I will tell you about the four factors that affect the sealing performance of the sealing ring.

First, the speed of rotation

  When the rotation speed is very low (< 0.03m/s), it is necessary to consider the smoothness of the operation of the equipment and whether the operational appears "crawling" phenomenon. When the movement speed is very high (> 0.8m/s), the lubricating oil film may be destroyed, and the oil seal is not well lubricated and frictions heat, resulting in greatly reduced life. It is recommended that polyurethane or rubber and plastic oil seal work in the speed range of 0.03m/s ~ 0.8m/s. High-speed oil seals need to put forward higher requirements for structure and material, and the speed of household appliances oil seals can reach 20000rpm. Both wear and temperature resistance need to be met, and the concentricity requirements of dynamic sealing on the installation are relatively high.  

Second, the temperature of the working environment

  Low temperature will reduce the elasticity of rubber and plastic oil seals, resulting in leakage, and even the entire oil seal becomes hard and brittle. High temperature will make the oil seal volume expansion, soft, resulting in the oil seal friction resistance increases rapidly and the pressure resistance decreases. It is recommended that the continuous operating temperature range of ordinary polyurethane or rubber and plastic oil seals be -10 ° C to +80 ° C. For the high temperature and high speed requirements of the working environment, we need to choose to use fluorine rubber and PTFE, high temperature resistance and wear resistance is better, the low temperature environment is generally to -40 degrees, and the rubber performance is tested at high and low temperatures to ensure that the product quality meets the requirements.  

Third, the working pressure of machinery

  The oil seal has a minimum service pressure requirement. Oil seals with low friction and low starting resistance should be selected for low pressure work. Below 2.5MPa, polyurethane oil seal is not suitable; High pressure to consider the oil seal pressure deformation, need to use anti-extrusion stop ring, grooving processing also has special requirements.

Fourth, the working medium

  General sealing media are gasoline, oil, diesel, grease, and some static sealing dust. In addition to selecting the working medium strictly according to the manufacturer's recommendations, it is important to keep the working medium clean. Aging or contamination of the oil will not only cause the components in the system to fail, accelerate the aging and friction of the oil seal, but also the dirt in it may scratch or embed the oil seal, making the seal fail. Therefore, it is necessary to regularly check the quality of the oil and its cleanliness, and replace the oil filter or oil according to the maintenance specifications of the equipment. The air remaining in the oil in the cylinder will be compressed by high pressure, which will cause the oil seal to burn out or even carbonize. In order to avoid this situation, exhaust treatment should be carried out at the initial operation of the hydraulic system. The hydraulic cylinder should also run at low pressure and slow speed for a few minutes to confirm that the residual air in the oil has been drained before it can work normally.