Sealing Excellence, Securing Industry

CFKS TBV Type Skeleton Oil Seal 130*160*12 NBR TBV Rotary Shaft Seal Heavy Duty Excavator Motor Shaft Seal

The CFKS TBV Type Skeleton Oil Seal is a heavy-duty rotary shaft seal engineered specifically for high-stress hydraulic environments like excavator motors. Featuring a reinforced double-lip skeleton structure, it provides exceptional dynamic sealing stability against high-pressure mud, water, and internal lubricants.

  • Reinforced Rigid Shell: Heavy-duty TBV design prevents seal deformation under high-pressure spikes.

  • Dual-Lip Protection: Primary sealing lip retains lubricants while the auxiliary dust lip blocks external contaminants.

  • Premium NBR Compound: Delivers superior resistance to petroleum-based hydraulic fluids and mechanical wear.

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

Product Name CFKS TBV Type Skeleton Oil Seal Specification 130*160*12mm
Material  NBR (FKM / PU available) Feature Heavy-Duty, High-Pressure & Wear Resistant
Work Temperature -20℃ to 220℃ (Material dependent) Hardness 70-85 Shore A
Type TBV Rotary Shaft Seal Usage Excavator Travel Motors, Hydraulic Pumps, Swing Gearboxes, Final Drives, Construction Machinery, Heavy-Duty Axles

 

 

 

The TBV configuration operates on an advanced hydrodynamic sealing principle optimized for rotating shafts. The primary sealing lip is precision-molded with a pre-loaded garter spring that maintains a constant, optimal radial force on the 130mm shaft. As the excavator motor rotates, the specialized lip profile generates a micro-hydrodynamic pumping effect, actively pushing migrating fluid back into the oil reservoir. The rigid metal skeleton casing ensures a secure, metal-to-metal press fit within the housing bore, eliminating any risk of axial displacement or spinning under high centrifugal forces.

Material integrity is critical in severe earthmoving applications. This seal utilizes a high-grade Acrylonitrile Butadiene NBR compound, specifically cross-linked to achieve superior volumetric stability when exposed to mineral oils, hydraulic fluids, and greases. For extreme thermal applications or synthetic fluids, alternative Fluoroelastomer FKM variants are deployed. The elastomer formulated for this TBV seal exhibits exceptional resistance to compression set and abrasive wear, ensuring the sealing lip retains its elasticity and radial tension even when subjected to continuous friction and frictional heat generation.

Achieving maximum operational life requires proper installation practices. Thanks to the robust TBV skeleton design, the seal offers excellent structural integrity during press-fitting, significantly reducing the risk of lip inversion or distortion. Before installation, the shaft must be polished to a fine finish, and the sealing lip should be pre-lubricated with a compatible system grease. The dual-lip architecture inherently extends maintenance intervals by isolating the primary seal from abrasive environmental grit, delivering a low-friction, high-durability barrier that minimizes shaft scoring and premature equipment failure.

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
TCV TYPE SEAL SIZE LIST
SizeTypeMaterialColor
12*30*5BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
13*19*2.5BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
14*25*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
16*30*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
17*30*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
17*30.3*8BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
17*32*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
17*35*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
17.46*28.58*5.7/6.3BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
18*30*10BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
18*30*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
18*35*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
18*35*8BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
18*35*9BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*27*5BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*30*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*32*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19.5*33*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*35*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19.5*30*6/6.5BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*35*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*35*8BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*35*3/7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*37*6.5/7.5BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
19*44.45*6.35BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*32*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*32*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*35*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*40*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*47*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*47*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*30*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*32*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
20*32*6.5/8.6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*35*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*36*10BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*36*7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
22*42*10BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
24*34*6.3BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
24*38*6/7BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
24*38*8BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
24*55*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
25*33*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN
25*35*6BABSL CFW / TCV OIL SEALNBR/FKMBLUE/BROWN

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