Rotary Shaft Seal CORTECO 12013435 90x140x11 BASL NBR Oil Seal

Product Overview

The Rotary Shaft Seal CORTECO 12013435 90x140x11 BASL NBR Oil Seal is a precision-engineered shaft sealing solution designed to ensure long-term protection and reliable performance in demanding industrial and automotive environments. Manufactured by CORTECO, a global leader in sealing technology, this oil seal is engineered to prevent oil leakage and protect machinery from external contamination.

Constructed from NBR (Nitrile Butadiene Rubber), this seal provides excellent resistance to oils, greases, fuels, and hydraulic fluids. The BASL type designates a single lip oil seal with a garter spring that maintains optimal radial pressure against the shaft surface, minimizing friction and extending service life. This configuration ensures high sealing efficiency, even under continuous rotation, pressure variation, and temperature fluctuations.

Technical Data

• Brand: CORTECO

• Part Number: 12013435

• Type: BASL (Single Lip with Spring)

• Material: NBR (Nitrile Butadiene Rubber)

• Dimensions: 90 x 140 x 11 mm

• Operating Temperature Range: -30°C to +100°C

• Media Compatibility: Oils, greases, lubricants, fuels, water-based fluids

• Design Features: Metal casing with elastomeric sealing lip for enhanced stability

This rotary shaft seal combines durable construction with precision fitment, ensuring smooth operation and effective protection in engine components, gearboxes, pumps, and rotating shafts.

Applications

The CORTECO 12013435 BASL NBR oil seal is suitable for:

• Engines and gearboxes in industrial machinery and heavy vehicles

• Hydraulic and pneumatic systems requiring fluid containment

• Agricultural and construction equipment, exposed to high dust and oil conditions

• Rotating shafts where oil retention and contaminant exclusion are essential

Its robust NBR compound makes it ideal for industrial applications that demand both flexibility and strength under high dynamic loads.

Key Advantages

• ✅ High durability - engineered for long-term performance in harsh environments

• ✅ Excellent oil and grease resistance due to high-grade NBR material

• ✅ Precise BASL design - single lip with garter spring for consistent sealing pressure

• ✅ Temperature and wear resistant, ensuring operational reliability

• ✅ OEM-quality standard - trusted CORTECO manufacturing precision

FAQ - Frequently Asked Questions

1. What does BASL mean in this oil seal?
BASL stands for a single lip design with a spring-loaded sealing edge, offering stable contact pressure and effective oil retention.

2. What is the main advantage of NBR material?
NBR provides excellent resistance to oils, fuels, and greases, while maintaining elasticity and sealing integrity across a wide temperature range.

3. Can this seal be used for both automotive and industrial applications?
Yes. The CORTECO 12013435 is suitable for automotive engines, gearboxes, and a wide range of industrial machinery.

4. What’s the difference between single and double lip seals?
A single lip (BASL) seal focuses on oil retention, while a double lip (TC type) adds a dust lip for external contamination protection.

5. How to select the right rotary shaft seal?
Choose a seal based on shaft size, housing diameter, operating medium, and temperature range to ensure proper compatibility and performance.