The STEFA 145x180x12 CB NBR Oil Seal is engineered for industrial rotating equipment requiring dependable lubricant retention and reliable sealing performance. It is suitable for industrial gearboxes, pumps, electric motors, reducers, compressors, mining equipment, and OEM machinery operating under continuous-duty conditions.

The CB Profile is one of the most widely adopted rotary shaft seal designs in industrial applications. It consists of a rubber-covered metal case and a spring-loaded primary sealing lip, without an additional dust lip. The rubber-coated outer diameter improves static sealing between the seal and housing while compensating for slight housing bore imperfections, reducing the possibility of external leakage.

The integrated garter spring continuously maintains sealing force against the rotating shaft, ensuring excellent lubricant retention throughout the seal's service life. This design effectively minimizes oil leakage while protecting bearings, shafts, gears, and other rotating components.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the seal provides excellent resistance to:

• Mineral oils
• Gear oils
• Hydraulic oils
• Lubricating grease
• Petroleum-based lubricants

NBR offers excellent wear resistance, flexibility, and durability, making it one of the industry's most widely used sealing materials. Typical operating capability is up to 0.5 Bar, -35°C to +100°C, and shaft surface speeds up to approximately 12 m/s, depending on lubrication and operating conditions.

With dimensions of 145 x 180 x 12 mm, this seal is commonly installed in industrial pumps, gearboxes, reducers, electric motors, mining equipment, conveyor drives, steel mills, and OEM rotating machinery.

⚙️ Applications

• Industrial gearboxes
• Industrial pumps
• Electric motors
• Speed reducers
• Air compressors
• Mining equipment
• Steel mills
• Conveyor systems
• Heavy industrial machinery
• OEM machinery

🎯 Benefits

✔ Excellent oil retention

✔ Reliable shaft sealing

✔ Rubber-covered OD improves housing sealing

✔ Protects bearings and shafts

✔ Excellent wear resistance

✔ Long service life

✔ OEM quality replacement

✔ Reduces maintenance costs

✔ Suitable for continuous industrial operation

🧠 Technical Insight

• CB Profile Design
• Rubber Covered Metal Case
• Spring Loaded Main Lip
• Single Lip Construction
• Excellent Oil Resistance
• Oil & Grease Compatible
• Reliable Static Housing Seal
• Industrial Rotary Equipment

✅ Key Features

• STEFA Industrial Quality
• CB Profile Design
• Rubber Covered OD
• Premium NBR Material
• Spring Loaded Sealing Lip
• Excellent Wear Resistance
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: STEFA

Model: CB

Size: 145 × 180 × 12 mm

Type: Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Profile: CB

Construction: Rubber Covered Metal Case

Lip Design: Spring Loaded Main Lip

Dust Lip: None

Spring Type: Garter Spring

Shaft Diameter (ID): 145 mm

Housing Diameter (OD): 180 mm

Width: 12 mm

Pressure Capability: Up to 0.5 Bar

Lubrication: Oil & Grease

Temperature Range: -35°C to +100°C

Maximum Shaft Speed: Up to 12 m/s

Application Class: Heavy Industrial Service

Standard: Metric Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF CB Oil Seal
• CR Chicago Rawhide Oil Seal
• NOK SC Oil Seal
• Freudenberg Oil Seal
• CFW Rotary Shaft Seal
• KACO Oil Seal
• DICHTOMATIK Oil Seal
• Simrit Oil Seal
• Garlock Oil Seal
• OEM Rotary Shaft Oil Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, pump repair, electric motor maintenance, mining equipment service, and OEM replacement applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification