The STEFA Oil Seal 140x170x15 CB NBR is engineered for industrial applications requiring dependable shaft sealing performance and long-term operational reliability.

The CB profile design incorporates a reinforced metal internal case, NBR elastomer sealing element, rubber-covered outer diameter, and spring-loaded sealing lip. This construction improves housing fit, minimizes leakage, and helps compensate for minor housing imperfections during installation.

Manufactured from NBR (Nitrile Butadiene Rubber), the sealing lip offers excellent resistance to lubricating oils, grease, hydraulic fluids, and petroleum-based lubricants. NBR remains one of the most widely used sealing materials for industrial oil seal applications because of its durability, flexibility, and cost-effective performance.

The 140 x 170 x 15 mm size is commonly used in industrial gearboxes, pumps, electric motors, reducers, conveyors, crushers, mining equipment, and imported industrial machinery requiring reliable lubricant retention and contamination exclusion.

⚙️ Applications

• Industrial gearbox
• Electric motors
• Hydraulic pumps
• Speed reducers
• Conveyor systems
• Crushers
• Mining equipment
• Agricultural machinery
• Industrial rotating equipment
• OEM machinery

🎯 Benefits

✔ Excellent oil retention

✔ Protect against dust and contamination

✔ Extend bearing and shaft life

✔ Reduce lubricant leakage

✔ Lower maintenance costs

✔ Improve equipment reliability

✔ Suitable for continuous industrial operation

🧠 Technical Insight

• CB profile includes spring-loaded sealing lip
• Rubber-covered OD improves housing sealing
• Metal reinforcement increases structural rigidity
• NBR offers excellent oil and grease resistance
• Suitable for oil and grease lubrication systems
• Widely used in industrial rotating equipment worldwide

✅ Key Features

• STEFA CB Profile Design
• Spring Loaded Sealing Lip
• Rubber Covered Outer Diameter
• Premium NBR Material
• Heavy-Duty Industrial Construction
• OEM Replacement Ready

📊 Specifications

Brand: STEFA

Model: CB

Size: 140 x 170 x 15 mm

Type: Spring Loaded Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Construction: Rubber Covered Metal Case

Spring Type: Garter Spring

Shaft Diameter (ID): 140 mm

Housing Diameter (OD): 170 mm

Width: 15 mm

🔁 Equivalent

Suitable replacement for:

Trelleborg STEFA CB Series

NOK SB Type

SKF Rotary Shaft Seal

CR Oil Seal

CFW Oil Seal

KACO Oil Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

📦 MOQ: 1 Piece

📲 Contact via LINE ID: dusitrea

🏭 Suitable for industrial maintenance and OEM replacement