Description
Rotary Shaft Oil Seal | Double Lip | Shaft Diameter (10mm) x Bore Diameter (21mm) x Width (4mm) | Nitrile Rubber Lip Material.
Product Overview
The Rotary Shaft Oil Seal with a Double Lip design is engineered to provide superior sealing performance in rotary applications. Measuring 10mm shaft diameter, 21mm bore diameter, and 4mm width, this seal is crafted from high-quality nitrile rubber (NBR), ensuring excellent resistance to oil, grease, water, and moderate chemicals. The double lip structure offers both primary sealing for lubricant retention and secondary protection against contaminants, extending the life of bearings and rotating components. Ideal for light to medium-duty applications, this seal ensures durability and efficiency in demanding industrial environments.
- Brand : AVX Seals
- Item Sku : TC10x21x4
- Type : TC 10x21x4 mm
- Inner : 10mm
- Outer : 21mm
- Width : 4mm
- Size : 10mm x 21mm x 4mm
- Seal Material : Nitrile Butadiene Rubber
- Temperature Range : -40 to 248 F

Applications
This 10x21x4mm Double Lip Rotary Shaft Oil Seal is used in:
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Electric motors and small gearboxes
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Automotive power steering pumps and alternators
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Agricultural equipment and light machinery
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Hydraulic and pneumatic tools
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Small industrial pumps and compressors
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General machinery with rotating shafts
Questions & Answers
Q1: What is the purpose of the double lip on this oil seal?
A1: The primary lip retains the lubricant inside the housing, while the secondary lip prevents contaminants like dust, dirt, and moisture from entering, increasing service life.
Q2: Is nitrile rubber suitable for all oils?
A2: Nitrile rubber (NBR) is highly resistant to mineral oils, greases, and water but is not recommended for high-temperature or aggressive chemical environments like strong acids or aromatic hydrocarbons.
Q3: Can I use this seal for high-speed applications?
A3: This seal is designed for light to medium-duty applications. For very high RPMs, consider seals made from Viton® or specialized high-speed designs.
