TC Skeleton Oil Seal | Double Lip Rotary Shaft Oil Seal

TC Skeleton Oil Seal | Double Lip Rotary Shaft Oil Seal

Product Overview

TC skeleton oil seal is the most universal rotary shaft sealing part for automotive and motorcycle aftermarket. It features fully rubber-covered outer shell, double lip design with built-in garter spring, providing stable sealing for high-speed rotating shafts. TC oil seals are widely used in engines, gearboxes, crankshafts and general mechanical transmission systems to prevent oil leakage and dust intrusion.

Made of high-quality NBR rubber as standard, our TC oil seals offer excellent oil resistance, wear resistance and aging stability. FKM/Viton material is available for high-temperature and heavy-duty working environments.

We also supply TC4 reciprocating shaft oil seals. While TC seals are designed for rotary shafts, TC4 oil seals are optimized for linear reciprocating movement on hydraulic cylinder rods. They cannot replace each other. Please confirm shaft movement type before ordering.

Key Features

• Double Lip Sealing Structure - Main lip for oil sealing, secondary lip for dust and water proof, dual protection for rotating parts.
• Full Rubber Covered Outer Diameter - Perfect fit for alloy and soft housing holes, no damage to mounting surface.
• Constant Spring Tension - Maintains stable lip pressure during long-term rotation, avoiding oil leakage.
• High Compatibility - Suitable for cars, motorcycles, trucks and general industrial machinery.
• Complete Standard Sizes in Stock - Fast delivery for global wholesale and repair shop orders.

Applications

Automotive engine, crankshaft, gearbox, transmission shaft, motorcycle engine box, wheel shaft, water pump and general rotary mechanical equipment.
TC4 version: Hydraulic cylinder piston rods for linear reciprocating motion.

Available Popular Sizes

TC: 17×30×7, 20×35×7, 25×40×7, 30×47×7, 35×52×8, 40×55×8, 42×62×10, 50×72×10
TC4: Custom & standard sizes available upon request

Material

Standard: NBR Rubber
Optional: FKM / Viton Rubber

Frequently Asked Questions

Q: What is a TC oil seal used for?
A: TC oil seal is a double-lip rotary shaft seal mainly used for engines, gearboxes and transmission rotating parts to prevent oil leakage and dust entering.

Q: What is the difference between TC and TB seal?
A: TC has full rubber-covered outer surface suitable for alloy housing; TB has exposed metal outer shell for steel and cast iron housing.

Q: What is the difference between TC and TC4 oil seal?
A: TC is double lip rotary shaft oil seal for rotating shafts like engine and gearbox. TC4 is designed for linear reciprocating motion of hydraulic cylinder piston rods. They have different lip profiles and cannot be interchanged.

Q: Do you support custom sizes and OEM?
A: Standard sizes are in stock. Custom specifications and OEM packaging are available for bulk orders.

Related Products

More seals in Automotive & Motorcycle Applications industry

Get In Touch

If you are looking for reliable wholesale automotive and motorcycle seals, we provide full-size in-stock support, customized specifications, and stable OEM service. Please send us your required size, quantity and application scenario. We will offer competitive factory prices and professional sealing solutions within 24 hours.