Sealing Excellence, Securing Industry

CFKS NBR TA Oil Seal 125*152.4*15 TA Type Radial Shaft Seal Dual Lip Rotary Oil Seal

The CFKS TA Type Radial Shaft Seal features a heavy-duty dual-lip design with an inner metal shell, engineered to provide superior fluid retention and contaminant exclusion in demanding rotary applications. Optimized for high-vibration environments, it ensures a tight, long-lasting axial alignment that keeps critical gearboxes and motors running smoothly.

  • Dual-Lip Protection: Primary sealing lip retains lubricants while the secondary auxiliary lip deflects external dust and debris.

  • Reinforced Rigidity: Constructed with an inner case to optimize structural stability and prevent blowouts under pressure spikes.

  • Optimized Radial Load: Precision garter spring ensures consistent contact pressure on the shaft, minimizing friction and wear.

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

Product Name CFKS TA Type Rotary Oil Seal Specification 125*152.4*15 (Customization Supported)
Material NBR / FKM / PU Feature High Pressure & Wear Resistance
Work Temperature -20°C to 220°C Hardness 70 – 90 Shore A
Type Dual Lip Radial Shaft Seal Usage Gearboxes, Electric Motors, Pumps, Axles, Reducers

The TA Type radial shaft seal operates on a precise hydrodynamic sealing principle, utilizing a dual-lip configuration to counteract centrifugal forces and fluid pressure. The primary sealing lip is energized by a stainless steel garter spring, maintaining an optimal radial force against the rotating shaft even during minor shaft deflection or eccentricity. As the shaft spins, the micro-geometry of the elastomeric lip creates a microscopic meniscus of lubricant, which reduces direct friction while preventing axial leakage. The secondary dust lip acts as a physical barrier, deflecting external contaminants before they can compromise the primary sealing zone.

Material integrity dictates sealing longevity under aggressive industrial parameters. This product line is available in NBR and FKM to match specific chemical and thermal demands. NBR offers exceptional resistance to petroleum-based oils, hydraulic fluids, and mechanical wear, making it the industry standard for general engineering. For environments involving synthetic lubricants, aggressive chemical mediums, or high thermal loads, the FKM variant provides superior degradation resistance, preventing the elastomer from hardening or cracking under continuous thermal duress.

Designed for seamless integration and minimal operational downtime, the TA profile features a metal OD with an inner shell that guarantees a secure, perpendicular press-fit into the housing bore. This rigid construction prevents spring unseating during high-velocity installations. To maximize the component’s low-friction lifespan, it is critical to pre-lubricate both the sealing lips and the shaft running surface prior to assembly. The reinforced structure eliminates the need for complex retaining mechanisms, streamlining routine maintenance cycles and reducing catastrophic equipment failure risks.

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
TA Oil Seal Size List
SIZEMaterialCore Application
35*52*10NBRCentrifugal Pumps & Transmission Shafts
40*62*12NBRHydraulic Pumps & Agricultural Machinery
45*65*12NBRIndustrial Reducers & Conveyor Systems
50*72*12NBR/FKMIndustrial Fan & Blower Assemblies
55*80*12NBRTractor Drive Axles & Power Take-Offs
60*85*12NBRWater Treatment Pumps & Mixers
65*90*12NBRMarine Propulsion & Stern Drive Systems
70*95*13NBR/FKMConstruction Machinery Wheel Hubs
75*100*12NBRHeavy-Duty Industrial Gearboxes
80*105*13NBR/FKMTruck Axle Repair & Drivetrains
85*110*13NBRMetal Rolling Mill Equipment
90*115*13NBRExcavator Final Drives & Travel Motors
95*120*13NBRPulp & Paper Processing Machinery
100*125*13NBR/FKMMining Conveyor Roller Assemblies
105*135*14NBRChemical Processing Pumps & Agitators
110*140*14NBR/FKMAgricultural Harvester Transmissions
115*145*14NBRHeavy-Duty Earthmoving Equipment
120*150*15NBR/FKMIndustrial Ventilation & Cooling Units
125*155*15NBRSteel Production Line Rollers
130*160*15NBR/FKMCement & Concrete Mixing Plants
135*165*15NBRShip Engine Crankshaft Seals
140*170*15NBR/FKMLarge Bore Hydraulic Cylinders
145*175*15NBRWind Turbine Main Shaft Bearings
150*180*15NBR/FKMQuarrying Machinery & Stone Crushers
155*185*15NBRRubber & Plastic Extrusion Lines
160*190*16NBR/FKMHeavy Cargo Winches & Hoists
165*195*16NBRLarge Gear Drives for Industrial Mills
170*200*16NBR/FKMMarine Dredging & Salvage Equipment
175*210*16NBRPetroleum Refining & Driller Machinery
180*210*16NBR/FKMThermal Power Generation Turbines
185*220*16NBRWastewater Aerator Drive Systems
190*225*16NBR/FKMMining Shovel & Dragline Components
195*230*16NBRHeavy Steel Casting & Forging Machines
200*240*18NBR/FKMSugar Mill Roller Drive Shafts
210*250*18NBR/FKMTunnel Boring Machine (TBM) Cutters
220*260*18NBRLarge Marine Propeller Shaft Seals
230*270*18NBR/FKMPort Handling & Container Cranes
240*280*20NBRHydroelectric Power Station Valves
250*290*20NBR/FKMLarge-Scale Industrial Air Compressors
260*300*20NBRHeavy Forging Presses & Hammers
270*310*20NBR/FKMMining Excavator Chassis & Axles

 

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