Sealing Excellence, Securing Industry

CFKS U Cup Rod Seal 105*120*9 High Pressure Polyurethane Hydraulic UN Seal

The CFKS U cup 105-120-9 rod seal 105×120×9 is a high pressure polyurethane hydraulic UN seal designed for rod sealing applications. Featuring a U-cup 105 120 9 sealing profile, it delivers excellent oil retention, strong wear resistance, and stable performance under high pressure. This UN rod seal 105*120*9 is ideal for hydraulic cylinders, excavators, and industrial machinery.

Find your sealing solution with CFKS — contact us for a quote.

Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type 105*120*9 UN Oil Seal  Packing 1 pc per bag

 

The CFKS U Cup rod seal 105×120×9 is designed for hydraulic rod sealing applications requiring stable oil retention and low leakage. Its U-cup / UN seal profile ensures excellent sealing performance during reciprocating motion in hydraulic cylinders.

 

Made from high quality polyurethane (PU), this UN rod seal offers outstanding wear resistance, high elasticity, and excellent resistance to extrusion under high pressure. The PU U cup seal performs reliably in demanding hydraulic environments.

With an accurate size of 105*120*9, this hydraulic UN seal ensures easy installation and a secure fit. It is widely used in excavators, construction machinery, hydraulic presses, and industrial hydraulic cylinder rod sealing systems.

Frequently Asked Questions (FAQ)

Why does my CFKS oil seal fail prematurely? Common causes and prevention tips2025-06-26T15:44:39+08:00

Premature oil seal failure can result from improper installation, poor shaft finish, incorrect material selection, or excessive pressure. To prevent this, ensure the shaft surface is smooth and within tolerance, use correct tools during installation, and choose seals made from materials compatible with your media and temperature.

How to correctly install a CFKS industrial oil seal to avoid leakage2025-06-26T16:04:32+08:00

Always clean the shaft and bore before installation. Use appropriate seal drivers to avoid deformation. Lubricate the lip before fitting to reduce friction during the first rotation. Ensure the seal is seated evenly and not tilted to avoid leaks.

What to do when your CFKS hydraulic seal is leaking under pressure2025-05-20T16:33:14+08:00

Check if the pressure exceeds the seal’s rated limit. Examine for wear, hardening, or improper installation. Replace the seal if damaged, and consider upgrading to a high-pressure CFKS seal variant. Also, verify that the housing and shaft are properly aligned.

How to choose the right CFKS oil seal for extreme operating environments2025-05-20T16:34:39+08:00

For high temperatures, aggressive chemicals, or abrasive environments, choose CFKS seals made of FKM, PTFE, or high-performance elastomers. Consider using seals with protective dust lips or metal casing. Our team can recommend the best fit for your application.

CFKS Seal Manufacturing Co., Ltd.
https://cfksseals.com/
Email: cfksnacy@gmail.com Mobile/WhatsApp/Wechat: (86) 188-3097-5917
UN Hydraulic Cylinder Piston And Piston Rod Seal
32*43*6 35*50*12 40*50*10 45*55*10 50*60*7 55*65*12 60*76*12
32*45*6 35*52*8 40*52*8 45*56*7 50*60*8 55*66*10 60*80*10
32*45*8 35*52*10 40*52*10 45*56*8 50*60*10 55*70*8 60*80*12
32*45*10 35*55*10 40*53*8 45*56*10 50*60*12 55*70*9 60*80*15
32*46*10 35.5*45*6 40*55*7 45*58*7 50*62*10 55*70*10 60*85*12
32*47*8 35.5*50.5*10 40*55*8 45*58*10 50*62*12 55*70*12 61*71*7
32*47*10 36*46*6 40*55*9 45*60*8 50*63*6 55*71*12 62*70*10
32*48*5 36*46*7 40*55*10 45*60*9 50*63*8 55*75*9 62*72*10
32*48*8 36*46*8 40*60*10 45*60*10 50*63*10 55*75*10 62*75*10
32*48*10 36*48*8 40*60*12 45*60*12 50*65*6 55*75*12 62*75*12
32*50*10 36*48*10 40*65*10 45*63*8 50*65*8 55*80*12 62*80*10
33*48*10 38*46*6.5 40*65*12 45*63*10 50*65*9 56*66*6 62*82*10
35*42*6 38*46*8 42*50*6 45*63*12 50*65*10 56*66*10 62*82*12
35*43*5 38*48*6 42*50*8 45*65*10 50*65*12 56*76*12 63*73*6
35*43*6 38*50*6 42*52*6 45*65*12 50*66*12 58*68*6 63*73*8
35*43*7 38*50*8 42*52*8 45*70*12 50*70*10 60*68*8 63*73*10
35*43*8 38*50*9 42*52*10 45*70*16 50*70*12 60*68*11 63*73*12
35*43*9 38*50*10 42*55*7 46*56*6 52*62*12 60*70*6 63*75*6
35*43*10 38*52*10 42*55*8 48*58*6 53*63*6 60*70*7 63*75*10
35*45*5 38*55*10 42*55*10 48*58*8 53*63*8 60*70*8 63*75*12
35*45*6 38*58*10 42*62*12 48*58*10 53*63*10 60*70*10 63*78*10
35*45*7 38*60*10 44*54*6 48*60*8 53*63*12 60*70*12 63*78*12
35*45*8 38*62*12 45*53*6 48*63*8 53*65*8 60*71*7 63*80*10
35*45*10 40*48*5 45*53*7 48*63*9 53*73*12 60*72*10 63*80*12
35*47*6 40*48*6 45*53*8 48*63*10 55*63*8 60*73*8 63*83*10
35*47*7 40*48*8 45*53*10 50*57*10 55*63*10 60*75*8 63*83*12
35*47*8 40*48*10 45*55*6 50*58*6 55*65*6 60*75*9 64*74*6
35*47*10 40*50*6 45*55*7 50*58*8 55*65*7 60*75*10 64*80*8

MESSAGE

Go to Top