The STEFA Oil Seal 20x42x7 CC NBR is engineered for industrial rotating equipment where reliable lubricant retention and contamination protection are essential for long-term operational performance.

The CC profile is one of STEFA's most popular oil seal designs. It features a primary spring-loaded sealing lip combined with an additional dust lip that protects the sealing area from dust, dirt, moisture, and external contaminants. This dual-lip construction significantly improves equipment reliability and extends bearing service life.

The seal incorporates a rubber-covered metal case construction that improves static sealing against the housing while simplifying installation. The integrated garter spring continuously maintains radial sealing force against the shaft surface, ensuring effective sealing performance throughout the seal's service life.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element offers excellent resistance to lubricating oils, grease, hydraulic fluids, and petroleum-based lubricants. NBR remains the industry's preferred material for general-purpose oil seal applications because of its excellent balance of oil resistance, abrasion resistance, flexibility, and cost-effectiveness.

With dimensions of 20 x 42 x 7 mm, this seal is commonly used in industrial gearboxes, electric motors, pumps, agricultural equipment, conveyor systems, and general rotating machinery.

⚙️ Applications

• Industrial gearbox
• Electric motor
• Hydraulic pump
• Water pump
• Agricultural machinery
• Conveyor systems
• Industrial fans
• Speed reducers
• Material handling equipment
• OEM machinery

🎯 Benefits

✔ Excellent oil retention

✔ Double lip contamination protection

✔ Protect against dust and moisture

✔ Extend bearing and shaft life

✔ Reduce lubricant leakage

✔ Lower maintenance costs

✔ Improve equipment reliability

✔ Suitable for continuous industrial operation

🧠 Technical Insight

• CC Profile = Spring-loaded sealing lip + Dust lip
• Equivalent to DIN 3760 Type AS
• Rubber-covered outer diameter improves housing sealing
• Garter spring maintains constant sealing pressure
• NBR provides excellent oil and grease resistance
• Suitable for oil and grease lubrication systems

✅ Key Features

• STEFA CC Profile Design
• Double Lip Construction
• Spring Loaded Sealing Lip
• Premium NBR Material
• Rubber Covered OD
• OEM Replacement Ready

📊 Specifications

Brand: STEFA

Model: CC

Size: 20 x 42 x 7 mm

Type: Double Lip Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Construction: Rubber Covered Metal Case

Spring Type: Garter Spring

Shaft Diameter (ID): 20 mm

Housing Diameter (OD): 42 mm

Width: 7 mm

Equivalent Standard: DIN 3760 Type AS

Application Class: Industrial Service

🔁 Equivalent

Suitable replacement for:

SKF HMSA10 Series

NOK SC Type

CR Oil Seal

CFW BA Type

KACO Oil Seal

DICHTA AS Type

TTO TRE Type

DIN 3760 Type AS

(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