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PTFE Oil Seal

Cummins Crankshaft Oil Seal Manufacturer | Front & Rear Main Seals Supplier
PTFE Oil Seal

Cummins Crankshaft Oil Seal Manufacturer | Front & Rear Main Seals Supplier

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  • Cummins Crankshaft Oil Seal Manufacturer | Front & Rear Main Seals Supplier
  • Cummins Crankshaft Oil Seal Manufacturer | Front & Rear Main Seals Supplier

Description

Product Description

Crankshaft and camshaft seals made of PTFE (teflon)material with low friction design offer high performance and durability.

PTFE /teflon radial shaft seals utilize a polytetrafluoroethylean wafer for dynamic sealing. GOS offers a range of solutions with a bonded PTFE wafer and optional unitized designs.

Features

Excellent chemical and wear resistance

Wide temperature range

Dry running capability

Lower friction and power loss compared to conventional spring loaded seals

One piece robust construction

Reverse PTFE lip 4th generation seal

Special custom designs available, for example plastic bayonet fitting or cassette with wear sleeve

Rubber or felt dust lips available

CUMMINS CRANKSHAFT OIL SEAL
NO.SEAL DIMENSIONAPPLICATIONOEM NUMBER(1)OEM NUMBER(2)
163.5×79.5×8CUMMINS(6BT)39007093904353
2130×150×14.5CUMMINS(6BT)39255293909410
375×93×8CUMMINS(6CT)39219273353977
4130×150×14.5CUMMINS(6CT)39332623904089/3353978
5152.5×171×16CUMMINS(NT85)300673839823
6152.5×171.5×10.5CUMMINS(NT85)3006737
742X66.7X12.7CUMMINS3020188
892×120.8×12CUMMINS(NT85)30043173020183
991×121×12CUMMINS(NT85)300673639813
1055×81×11CUMMINS(NT85)30201873020185/39717
1155×81×11CUMMINS(NT85)3004316
1241X63.5X6CUMMINS(NT85)3038998
13185×206×13CUMMINS(K)30821423630681
14110×140×13CUMMINS(K)30167873016792
1555×73×13CUMMINS(K)3016788
1640X54X9.5CUMMINS(K19)3016794
1750X81X11CUMMINS3078221
1895×120.5×12.5CUMMINS3010459
1980×105×12CUMMINS3010457
2045×65×10CUMMINS200307
2148×81×11CUMMINS30782923412267
22122×152.5×14.5CUMMINS3023867
23103×127×13CUMMINS3020184
2466X79.5X8CUMMINS3922598
2525X41X8CUMMINS3019600
2628X41X8CUMMINS SETS38038943161772
2728X41X8CUMMINS3803573
2845X65X8CUMMINS38950343803574
2945X65X8CUMMINS SETS38920203804304
3085.5X99.5X5.5CUMMINS3804744
3190X107.5X8CUMMINS38950373803576
32166X190X12CUMMINS3800968
33166X190X12CUMMINS3800969
34152.5X171.5X11CUMMINS30058853005886
35110X130X12CUMMINS3895036
3672*73*10CUMMINS3968562
37130*150*14CUMMINS3968563
3870*100*12.5/16CUMMINS4890832
39130*150*14CUMMINS3968563
4050.3-65-8/10CUMMINS5365266
41110*125*12/14CUMMINS5265267

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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.