Sealing Excellence, Securing Industry

CFKS TC Type Oil Seal 48*62*8 Hydraulic TC Rotary Seal TC Skeleton Oil Seal

The CFKS TC Type 48*62*8 Oil Seal is a premium-grade radial shaft sealing solution designed to sustain internal system pressure while effectively blocking cross-contamination. Featuring a dual-lip design backed by a precision garter spring and a fully rubber-covered carbon steel skeleton, it ensures dynamic hydrodynamic sealing stability even in high-vibration, high-velocity environments.

  • Dual-Lip Exclusion: Primary sealing lip prevents fluid loss, while the auxiliary dust lip blocks external debris.

  • Rigid Internal Skeleton: The carbon steel structural ring maintains outer diameter concentricity and prevents housing distortion.

  • Hydrodynamic Optimization: Engineered to minimize frictional torque, reducing thermal buildup and extending shaft service life.

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

Product Name: CFKS TC Type Oil Seal 48*62*8 Specification: Standard 48*62*8mm (Customization Supported)
Material: NBR / FKM / PU Feature: High-pressure resistance, anti-wear, low friction
Work Temperature: -20℃ to 220℃ (Compound dependent) Hardness: 70 – 75 Shore A
Type: Rotary Skeleton Lip Seal Usage: Hydraulic pumps, gearboxes, reducers, electric motors, crankshafts, machine tool spindles

 

The CFKS TC type profile operates on the fundamental principle of axial-radial hydrodynamic balance. The primary sealing lip is radial, pre-loaded by an internal garter spring that exerts a consistent radial force onto the rotating shaft. This force creates a controlled, micro-thin fluid film between the elastomer lip and the shaft surface. This fluid film is critical: it prevents direct metal-to-rubber friction while leveraging surface tension to block oil migration. The secondary auxiliary lip faces axially outward, acting as a non-spring-loaded barrier that deflects centrifugal dirt and debris away from the primary sealing zone.

Material compounding directly dictates the seal’s longevity when exposed to aggressive industrial fluids and thermal cycling. For standard hydraulic applications, our NBR variant offers exceptional resistance to petroleum-based oils, mineral fluids, and greases, maintaining its structural elasticity without premature swelling. For high-temperature or chemically corrosive environments involving synthetic lubricants, the FKM compound is deployed. FKM withstands aggressive chemical attack and resists thermal degradation, preventing the lip from hardening and cracking under continuous high-surface-velocity friction.

Operational reliability depends heavily on proper installation and minimizing maintenance overhead. The rubber-covered outer diameter of the TC seal compensates for thermal expansion in the housing bore, ensuring a tight static seal without damaging softer alloy housings during press-fit operations. For routine maintenance, the flexible elastomer compound allows for a more forgiving installation alignment. Due to the minimized friction coefficient of the optimized lip geometry, these seals boast an extended low-friction operational lifespan, significantly reducing unplanned system downtime and preventing localized shaft grooving.

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
TC/TG TYPE SEAL SIZE LIST
No.Product NameTypeSIZEColorMaterial
1Rubber Oil SealTC / TGTC 10*18*5Black/BrownNBR/VITON
2Rubber Oil SealTC / TGTC 10*19*5Black/BrownNBR/VITON
3Rubber Oil SealTC / TGTC 10*20*7Black/BrownNBR/VITON
4Rubber Oil SealTC / TGTC 12*19*5Black/BrownNBR/VITON
5Rubber Oil SealTC / TGTC 12*22*7Black/BrownNBR/VITON
6Rubber Oil SealTC / TGTC 15*24*7Black/BrownNBR/VITON
7Rubber Oil SealTC / TGTC 15*28*5Black/BrownNBR/VITON
8Rubber Oil SealTC / TGTC 15*30*7Black/BrownNBR/VITON
9Rubber Oil SealTC / TGTC 16*24*7Black/BrownNBR/VITON
10Rubber Oil SealTC / TGTC 17*35*5Black/BrownNBR/VITON
11Rubber Oil SealTC / TGTC 19*32*7Black/BrownNBR/VITON
12Rubber Oil SealTC / TGTC 20*45*7Black/BrownNBR/VITON
13Rubber Oil SealTC / TGTC 20*47*7Black/BrownNBR/VITON
14Rubber Oil SealTC / TGTC 20*52*7Black/BrownNBR/VITON
15Rubber Oil SealTC / TGTC 22*35*5Black/BrownNBR/VITON
16Rubber Oil SealTC / TGTC 22*35*7Black/BrownNBR/VITON
17Rubber Oil SealTC / TGTC 22*47*7Black/BrownNBR/VITON
18Rubber Oil SealTC / TGTC 24*42*7Black/BrownNBR/VITON
19Rubber Oil SealTC / TGTC 25*37*5Black/BrownNBR/VITON
20Rubber Oil SealTC / TGTC 25*46*7Black/BrownNBR/VITON
21Rubber Oil SealTC / TGTC 25*52*7Black/BrownNBR/VITON
22Rubber Oil SealTC / TGTC 28*40*10Black/BrownNBR/VITON
23Rubber Oil SealTC / TGTC 28*47*10Black/BrownNBR/VITON
24Rubber Oil SealTC / TGTC 30*52*10Black/BrownNBR/VITON
25Rubber Oil SealTC / TGTC 30*58*10Black/BrownNBR/VITON
26Rubber Oil SealTC / TGTC 30*60*10Black/BrownNBR/VITON
27Rubber Oil SealTC / TGTC 30*62*7Black/BrownNBR/VITON
28Rubber Oil SealTC / TGTC 32*45*10Black/BrownNBR/VITON
29Rubber Oil SealTC / TGTC 35*47*7Black/BrownNBR/VITON
30Rubber Oil SealTC / TGTC 35*50*7Black/BrownNBR/VITON
31Rubber Oil SealTC / TGTC 35*62*10Black/BrownNBR/VITON
32Rubber Oil SealTC / TGTC 35*72*12Black/BrownNBR/VITON
33Rubber Oil SealTC / TGTC 38*52*10Black/BrownNBR/VITON
34Rubber Oil SealTC / TGTC 40*52*8Black/BrownNBR/VITON
35Rubber Oil SealTC / TGTC 40*55*8Black/BrownNBR/VITON
36Rubber Oil SealTC / TGTC 40*58*8Black/BrownNBR/VITON
37Rubber Oil SealTC / TGTC 40*62*10Black/BrownNBR/VITON
38Rubber Oil SealTC / TGTC 40*65*10Black/BrownNBR/VITON
39Rubber Oil SealTC / TGTC 40*72*10Black/BrownNBR/VITON
40Rubber Oil SealTC / TGTC 40*75*10Black/BrownNBR/VITON
41Rubber Oil SealTC / TGTC 42*62*10Black/BrownNBR/VITON
42Rubber Oil SealTC / TGTC 42*72*10Black/BrownNBR/VITON
43Rubber Oil SealTC / TGTC 45*60*8*Black/BrownNBR/VITON
44Rubber Oil SealTC / TGTC 45*62*8Black/BrownNBR/VITON

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