Oil Seals (Rotary Shaft Oil Seals / Skeleton Oil Seals) are a key category of rubber sealing products used for rotating shaft applications. They consist of a metal skeleton for rigid support and a rubber lip for dynamic sealing, widely used to retain lubricating oil/grease and exclude external dust and contaminants from rotating shaft assemblies. Custom oil seals can be developed according to drawings, samples, or working conditions, with support for different materials, sizes, lip configurations, and with or without garter spring. Typical applications include automotive, construction machinery, agricultural machinery, electric motors, gearboxes, pumps, hydraulic systems, and general industrial rotary sealing.
Key Features
One
Composite metal skeleton and rubber lip structure ensures dimensional stability, easy installation, and excellent dynamic sealing performance.
Three
Oil-resistant, heat-resistant, wear-resistant, and aging-resistant, suitable for high-speed rotation and demanding conditions.
Two
Custom sizes, lip configurations (single lip, double lip, dust lip, etc.), and spring configurations are available.
Four
Material and structure selection can be recommended based on shaft diameter, bore diameter, linear speed, operating temperature, and media type.
Available Options
- Material: NBR, FKM, HNBR, ACM, VMQ (Silicone), or as specified
- Hardness: commonly 60-80 Shore A, customizable
- Skeleton Type: inner cased, outer cased, or assembled type
- Lip Type: single lip, double lip, dust lip
- Color: mainly black, customizable on request
- Packaging: bulk packing or customized packaging
Applications
Automotive engines and transmissions, construction and agricultural machinery, electric motors and gearboxes, pumps and hydraulic systems, paper and printing machinery, and general industrial rotary sealing.
Note:
Custom production available based on shaft diameter (d), bore diameter (D), width (b), and working condition requirements; compliant with GB, ISO, DIN standards or fully custom; small-batch sampling supported.
FAQ
Q: Does it have waterproof and dustproof performance?
A: Strong wrapping performance, which can effectively prevent water, dust, wear and aging.
Q: How to choose material for skeleton oil seals?
A: Based on oil and temperature – NBR for mineral oils, FKM for high-temp fuels, EPDM for water/brake fluid. Consult us for guidance.
Q: Is it suitable for high-speed rotating shafts?
A: Stable structure, wear-resistant sealing lip, suitable for high-speed rotation scenarios of motors, bearings and reducers.
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