CORTECO 01016544 NBR BAFSFSL Rotary Shaft Seal 20x30x5/6

Application and Function

The CORTECO 01016544 NBR BAFSFSL Rotary Shaft Seal (20x30x5/6 mm) is a premium radial oil seal engineered for high-precision sealing of shafts in automotive and industrial systems. Designed in the BAFSFSL configuration, this seal features a primary sealing lip for oil retention and a secondary dust lip that prevents ingress of external contaminants.

Manufactured from durable NBR (nitrile butadiene rubber), it ensures reliable performance under constant shaft rotation, contact with lubricants, and exposure to dust or moisture. This CORTECO seal is widely used in ZF transmissions and compatible with part numbers 0770080273 and 0770198130, making it a proven choice for driveline and gearbox manufacturers.

Advantages and Key Features

• Precise double-lip design (BAFSFSL) - combines effective oil retention with an integrated dust lip for contamination protection.

• High-grade NBR compound - offers excellent resistance to oils, greases, hydraulic fluids and moderate temperatures (-30 °C to +100 °C).

• Compact size (20x30x5/6 mm) - fits perfectly in tight housings, shafts, and compact transmission assemblies.

• Enhanced service life - minimizes oil leakage, wear and system downtime.

• OEM-compatible - designed according to ZF specifications for demanding automotive and industrial applications.

• Versatile use - suitable for gearboxes, differential shafts, motor assemblies and rotating drive units.

Technical Specifications

• Manufacturer: CORTECO

• Part Number: 01016544 / 82016544

• Type: Rotary Shaft Seal (BAFSFSL - double lip with dust protection)

• Material: NBR (Nitrile Butadiene Rubber)

• Dimensions: 20 mm x 30 mm x 5/6 mm

• Function: Oil and dust sealing for rotating shafts

• OEM References: ZF 0770080273 / 0770198130

• Color/Finish: Black elastomer, metal-reinforced outer casing

FAQ - Frequently Asked Questions

Q1: What does “BAFSFSL” mean in this oil seal?
A1: BAFSFSL is a design code referring to a double-lip rotary shaft seal with a spring-loaded sealing lip (for oil retention) and a secondary dust lip that prevents external contamination from entering the system.

Q2: Why is NBR used for this shaft seal?
A2: NBR is a cost-effective and durable elastomer that provides excellent resistance to mineral oils, lubricants, and fuels, while maintaining flexibility in dynamic applications.

Q3: Is this seal suitable for high-speed rotation?
A3: Yes. The CORTECO 01016544 is engineered for rotary shafts operating at high speed, offering low friction and optimal lip contact pressure for minimal heat build-up.

Q4: Can I use this oil seal in ZF gearboxes or industrial drives?
A4: Absolutely. This model matches ZF OEM part numbers 0770080273 and 0770198130, ensuring a precise fit and performance reliability in driveline, gearbox, and transmission assemblies.

Q5: What’s the benefit of the dust lip?
A5: The dust lip provides an additional barrier that prevents dirt, dust, and moisture from entering the system — essential for extending bearing and lubricant lifespan.