Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of standard tc skeleton nbr oil seal for rotating shafts in China. If you're going to buy standard tc skeleton nbr oil seal for rotating shafts made in China, welcome to get more information from our factory. We also accept customized orders.
Standard Design for Rotary Shafts
This TC oil seal is the industry standard for rotary motion applications. It is installed in a housing bore and press-fits around a rotating shaft. Unlike U-cup hydraulic seals or fork dust seals for linear motion, this skeleton oil seal relies on a radial spring to maintain constant contact with the rotating shaft. It is widely used in electric motors, centrifugal pumps, gearboxes, and automotive wheel hubs where high-speed rotation and fluid retention are required.
Double-Lip Protection & Sealing
The "TC" design features a primary sealing lip and a secondary dust lip. The primary lip, energized by a stainless steel spring, prevents internal lubricating oil or grease from leaking out. The secondary dust lip acts as a barrier, preventing external dust, dirt, and moisture from entering the bearing housing. This dual-lip structure is highly effective in dusty environments and significantly extends the service life of the bearings and the shaft.
NBR Material & Oil Resistance
Manufactured from high-grade NBR (Nitrile Butadiene Rubber), this oil seal offers excellent resistance to mineral oils, greases, and hydraulic fluids. It operates effectively within a temperature range of -40°C to +120°C. The NBR compound is designed to resist swelling and hardening over time, ensuring consistent sealing performance. It is a cost-effective solution for general industrial applications but is not recommended for highly aggressive chemicals or extreme heat.
Installation & Tolerance
This oil seal features a rubber-covered outer diameter that ensures a tight interference fit when pressed into the housing bore, preventing fluid leakage around the edge. The standard size format is "Shaft OD × Housing Bore × Width" (e.g., 25×47×7mm). Proper installation requires a clean shaft surface (Ra 0.2-0.8μm) and a specialized seal driver tool to avoid damaging the delicate rubber lip during press-fitting.
Application Scope
This versatile oil seal is widely used across various industries and equipment. It is a critical component in electric motors, water pumps, agricultural machinery, gearboxes, and automotive transmissions. Available in a comprehensive range of metric and inch sizes, it can be easily replaced when worn. Its combination of affordability, reliable sealing, and easy availability makes it the most common sealing solution for standard rotary shaft applications.
Company Information
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