Inner Oil Seal – High-Performance Custom Oil Seals for Shafts & Bearings
Product Overview
An inner oil seal plays a crucial role in keeping machinery running smoothly. It stops oil, grease, and other lubricants from leaking along a shaft or bearing while blocking dust, dirt, and moisture from entering the system. Whether used in automotive engines, industrial pumps, hydraulic systems, or agricultural equipment, a high-quality inner oil seal directly impacts equipment lifespan, efficiency, and safety.
At Xiamen Jinshun Sealing Technology Co., Ltd., we manufacture custom and standard inner oil seals using premium materials such as NBR, FKM, SIL, EPDM, HNBR, and CR-engineered for durability, heat resistance, and long-term sealing performance.
Why Inner Oil Seals Matter
Inner oil seals protect machinery by:
- Maintaining stable lubrication inside rotating components
- Preventing oil leakage and reducing maintenance costs
- Blocking dust, abrasive particles, and moisture
- Enhancing bearing life and overall equipment reliability
- Supporting high-speed rotation while minimizing friction
These seals are widely used in engines, gearboxes, motors, pumps, and precision industrial equipment.
Inner Oil Seal Features
- Materials available: NBR, FKM, Silicone, EPDM, HNBR, CR
- Durometer hardness: Shore A 40–90
- Color options: Black, Brown, Custom
- Size: 100% custom-made based on drawing or sample
- Origin: Made in China
- Seal types: TC, SC, VC, TB, TA, KB, and other standard structures
- Performance: High temperature resistance, oil resistance, wear resistance, low compression set
How to Read Inner Oil Seal Specifications
Each oil seal is defined by its ID × OD × Height.
For example:
TC30×40×5
- Inner diameter (d): 30 mm
- Outer diameter (D): 40 mm
- Height (B): 5 mm
- Type: TC - double-lip skeleton oil seal
Standard oil seals typically have:
- ID: 16–440 mm
- Width: 7–20 mm
Technical Parameters (Example Specifications)
| Parameter | Specification |
|---|---|
| Material | NBR / FKM / SIL / EPDM / HNBR / CR |
| Hardness | Shore A 40–90 |
| Temperature Range | NBR: -40°C to +120°C; FKM: -20°C to +200°C; Silicone: -60°C to +230°C |
| Pressure Resistance | Up to 0.05–0.1 MPa |
| Speed Capability | Up to 10–20 m/s |
| Color Options | Black, Brown, Custom |
| Size Range | Custom ID, OD & Height |
| Standards | DIN / GB / GB/T 9877-88 |
| Application Fields | Engines, pumps, gearboxes, motors, compressors, and industrial machinery |
Why Choose Xiamen Jinshun Sealing Technology?
✔ 22 Years of R&D Experience
Our engineering team develops custom sealing formulas and structures to match your application demands.
✔ Strict ISO 9001:2015 Quality System
Every oil seal undergoes:
- 100% visual inspection
- Dimensional accuracy checks
- Physical performance testing
- Organic & inorganic content analysis
- Heavy metal inspection
- Low-temperature brittleness testing
- Sealing performance simulation
✔ Low MOQ + Fast Delivery
- Stock items ship within 24 hours
- Custom molds with short lead times
- Flexible order quantities for distributors and OEM buyers
✔ Competitive Pricing for Global Buyers
We support OEM, ODM, wholesale, and distribution partnerships worldwide.
FAQ – Inner Oil Seal
1. How do you ensure stable quality for inner oil seals?
We follow GB, ASTM, and NSF testing standards and utilize advanced inspection equipment. Each oil seal is tested for dimensions, hardness, sealing capability, and temperature resistance. Lifetime technical support is available for all clients.
2. Can I visit your factory?
Yes! We are located near Xiamen International Airport, and we can arrange airport pickup for buyers and partners.
3. What payment methods do you support?
We accept T/T, L/C, Western Union, MoneyGram, PayPal, and other secure options.
4. Can you produce custom sizes or special materials?
Absolutely. We can customize according to drawings, samples, or application requirements.
Partner with a China Oil Seal manufacturer
Looking for a reliable inner oil seal manufacturer in China?
Partner with Xiamen Jinshun Sealing Technology-trusted by global brands for stable quality, competitive pricing, and flexible OEM/ODM services.
👉 Contact us now for a free sample, quotation, or custom design support.
Our engineering team is ready to assist you.
