The FKM TC oil seal is a high-performance rubber covered double lip skeleton oil seal made of FKM (fluororubber/Viton) material. It features a metal skeleton reinforcement, a primary sealing lip with an integrated garter spring, and an additional dust lip. The FKM material provides excellent high temperature resistance and chemical resistance, making it ideal for demanding applications in engineering machinery, automotive engines, and industrial equipment.
SANPING SEAL – Engineering Machinery High-End Seals – 17 Years Export Expertise
Product Overview
The FKM TC oil seal is a classic representative of skeleton oil seals. The “TC” designation indicates a rubber covered, double lip seal with a garter spring. Made from FKM (fluororubber), this seal offers superior performance in high temperature and chemically aggressive environments.
The FKM TC oil seal consists of three main components:
● Rubber Sealing Body – Made of FKM fluororubber, providing excellent heat and chemical resistance
● Metal Reinforcing Skeleton – Provides structural strength and maintains shape
● Self-Tightening Garter Spring – Maintains constant radial pressure on the shaft
Double Lip Design
The double lip configuration is the defining feature of the TC seal:
● Primary (Oil) Lip – Prevents internal oil or grease from leaking out; equipped with a garter spring to maintain sealing pressure
● Secondary (Dust) Lip – Keeps external contaminants like dust, mud, and water from entering the equipment
FKM Material Advantages
FKM (fluororubber/Viton) offers several key benefits over standard NBR rubber:
● High temperature resistance – Operates continuously up to 200°C (peak up to 250°C)
● Chemical resistance – Excellent resistance to oils, fuels, acids, and aggressive chemicals
● Aging resistance – Superior resistance to ozone, oxidation, and weathering
● Low gas permeability – Excellent sealing for high-vacuum applications
● Self-extinguishing – Fire-resistant properties
Specifications and Parameters
| Parameter |
FKM Material Specification |
| Product Type |
TC (Rubber covered, double lip with spring) |
| Material |
FKM (Fluororubber / Viton) |
| Hardness |
70-75 Shore A |
| Color |
Brown |
| Temperature Range |
-20°C to +200°C (peak +250°C) |
| Working Pressure |
≤ 0.03-0.05 MPa |
| Shaft Speed |
Up to 25 m/s |
| Application |
Rotary shafts, engines, transmissions, hydraulic systems |
Product Features
1. High Temperature Resistance
FKM material allows the TC oil seal to operate continuously at temperatures up to 200°C, with peak tolerance up to 250°C. This makes it suitable for high-temperature applications where standard NBR seals would fail.
2. Double Lip Design
The primary lip seals oil inside while the secondary dust lip keeps contaminants out, providing complete protection for rotating shaft applications.
3. Rubber Covered Outer Diameter
The fully rubber-coated outer diameter ensures a reliable static seal even when housing bores have rough surfaces or minor damage.
4. Spring-Loaded Primary Lip
The garter spring maintains constant radial force on the shaft, automatically compensating for lip wear over time.
5. Excellent Chemical Resistance
FKM provides outstanding resistance to a wide variety of chemicals, including acids, fuels, solvents, and aggressive hydraulic fluids.
6. Long Service Life
Superior heat aging and wear resistance result in extended seal life, reducing maintenance costs and downtime.
Applications
FKM TC oil seals are widely used in high-temperature and chemically demanding environments:
Construction Machinery:
● Excavator engines and final drives
● Loader transmissions and axles
● Bulldozer undercarriage components
● Hydraulic pumps and motors
Automotive Applications:
● Engines (crankshaft, camshaft)
● Transmissions and differentials
● Turbochargers
● Exhaust gas recirculation systems
Industrial Equipment:
● High-temperature gearboxes
● Compressors
● Pumps handling aggressive fluids
● Industrial furnaces and ovens
Other Applications:
● Chemical processing equipment
● Marine engines
● Power generation equipment
Why Choose SANPING SEAL?
17 Years of Export Expertise
Guangzhou Sanping Machinery Co., Ltd., established in 2009, has served customers across South Asia, Southeast Asia, Africa, South America, the Middle East, and Europe.
Specialized Focus
We concentrate exclusively on engineering machinery high-end seals, ensuring we understand your equipment applications better than general seal suppliers.
Quality Guarantee
Every order follows our two-step quality process: pre-production sample testing before mass production, and final inspection before shipment.
Frequently Asked Questions (FAQ)
Q: What is the difference between FKM TC and NBR TC oil seals?
A: FKM TC seals offer superior high temperature resistance (up to 200°C vs 120°C for NBR) and better chemical resistance. NBR is suitable for standard mineral oil applications at lower temperatures.
Q: What is the maximum temperature for FKM TC oil seals?
A: FKM TC oil seals can operate continuously at temperatures up to 200°C, with peak temperatures up to 250°C.
Q: What does the “TC” designation mean?
A: TC indicates a rubber covered oil seal with double lips (primary sealing lip + dust lip) and a garter spring.
Q: Is this seal suitable for high-speed applications?
A: Yes, FKM TC oil seals can handle shaft speeds up to 25 m/s.
Q: What color are FKM TC oil seals?
A: FKM TC oil seals are typically brown or red-brown in color.
Q: What are your payment terms?
A: We accept T/T (bank transfer), L/C, MoneyGram, Western Union, and cash.
