Sealing Excellence, Securing Industry

CFKS Industrial IDU Hydraulic U Cup Rod Oil Seal 25*31*8 Single Acting TPU IDU Seal

CFKS industrial 25*31*8 IDU hydraulic U cup rod oil seal 25×31×8 is a single acting IDU seal 25-31-8 made from durable TPU material. This hydraulic U cup rod seal 25 31 8 provides excellent wear resistance, reliable oil retention, and smooth operation under pressure. Widely used in hydraulic cylinders and industrial equipment, it ensures stable sealing performance and long service life in demanding hydraulic applications.   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 25*31*8 IDU Oil Seal  Packing 1 pc per bag

 

The CFKS industrial IDU hydraulic U cup rod oil seal 25*31*8 is a single acting IDU seal designed for reliable rod sealing in hydraulic cylinder applications. Made from high-quality TPU material, this IDU hydraulic seal provides stable oil retention and consistent sealing performance.

 

This IDU rod oil seal features excellent wear resistance, pressure resistance, and low friction during dynamic operation. The U cup sealing profile ensures effective sealing in one pressure direction, reducing leakage and extending the service life of hydraulic components.

CFKS IDU hydraulic seals are widely used in hydraulic cylinders, industrial machinery, and fluid power systems. With precise dimensions and durable TPU material, this single acting IDU seal delivers dependable sealing performance, smooth rod movement, and long-term reliability in demanding industrial environments.

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
IDU TYPE SEAL SIZE LIST
SIZEMaterialSIZEMaterial
10*16*8NBR115*127*14FKM
12*18*8NBR115*131*18FKM
14*20*8NBR120*132*14FKM
16*22*8NBR120*136*18FKM
16*24*10NBR125*137*14FKM
18*24*8NBR125*141*18FKM
18*26*10NBR130*142*14FKM
20*26*8NBR130*146*18FKM
20*28*10NBR135*147*14FKM
22*28*8NBR140*152*14FKM
22*30*10NBR140*156*18FKM
25*31*8NBR145*157*14FKM
25*33*10NBR145*161*18FKM
28*34*8NBR150*162*14FKM
28*36*10NBR150*166*18FKM
30*38*10NBR155*167*14FKM
32*40*10NBR155*171*18FKM
35*43*10NBR160*172*14FKM
36*44*10NBR160*176*18FKM
40*48*10NBR165*181*18FKM
45*53*10NBR170*186*18FKM
50*58*10NBR175*191*18FKM
50*62*14NBR180*196*18FKM
55*63*10NBR185*201*18FKM
55*67*14NBR190*206*18FKM
56*64*10NBR195*211*18FKM
60*72*14NBR200*216*18FKM
63*75*14NBR200*224*24FKM
65*77*14NBR205*221*18FKM
70*82*14NBR210*226*18FKM
75*87*14NBR215*231*18FKM
80*92*14NBR220*236*18FKM
85*97*14NBR230*246*18FKM
90*102*14NBR240*256*18FKM
95*107*14NBR250*266*18FKM
100*112*14NBR260*276*18FKM
105*117*14NBR270*286*18FKM
105*121*18NBR280*296*18FKM
110*126*18NBR290*306*18FKM

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