Sealing Excellence, Securing Industry

CFKS TC Oil Seal 27*39*10.5 Heat Resistant FKM TC Type Double Lip Skeleton Oil Seal

The CFKS TC Type Oil Seal 27*39*10.5 is a premium-grade rotary shaft seal designed to provide superior fluid retention and contaminant exclusion. Utilizing a reinforced metal skeleton and a dual-lip architecture, this seal ensures operational stability even under intense centrifugal forces and thermal stress.

  • High-Thermal Stability: Premium FKM construction maintains integrity in temperatures up to 220°C.

  • Double-Lip Protection: Primary lip retains lubrication while the auxiliary dust lip prevents external ingress.

  • Corrosion Resistance: Excellent compatibility with synthetic oils, fuels, and aggressive chemical media.

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

Parameter Details Parameter Details
Product Name CFKS TC Double Lip Oil Seal Specification 27*39*10.5
Material FKM Feature High Temp & Chemical Resistance
Work Temp -20°C to 220°C Hardness 70 – 75 Shore A
Type TC (Double Lip with Skeleton) Usage Gearboxes, Pumps, Motors, Crankshafts, Transmissions

 

The TC profile is engineered as a rubber-covered double-lip seal with an integrated garter spring. The primary sealing lip utilizes a precise interference fit and spring-loaded tension to counteract shaft run-out, ensuring a constant radial force. This design effectively manages the axial pressure distribution, while the secondary lip acts as a sacrificial barrier against environmental dust and debris, significantly extending the life of the internal bearings.

For applications involving high-speed rotation or chemical exposure, Material selection is critical. While standard NBR suffices for general hydraulic use, our FKM compound is specifically chosen for its high cross-linking density. This provides exceptional resistance to ozone, aging, and “swelling” when exposed to modern synthetic lubricants. Whether facing petroleum-based fluids or organic solvents, the FKM seal maintains its durometer and sealing geometry far longer than conventional elastomers.

One of the core advantages of the TC skeleton design is its structural rigidity, which allows for a press-fit installation without the risk of seal casing deformation. The rubber-covered OD provides a superior static seal against the housing, even in applications with thermal expansion variances. For long-term maintenance, the low-friction coefficient of our FKM compound reduces shaft wear, facilitating easier replacements and lower total cost of ownership.

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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