The CORTECO 01025573 ACM B1BASLSFRD Radial Oil Seal, also known as a Rotary Shaft Seal, offers precise sealing for BMW differential shafts. With dual-width 10/14 mm and integrated dust protection lip, its ACM compound ensures durability and resistance to oil and heat.
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The CORTECO 01025573 is a premium Radial Oil Seal engineered for differential shafts, featuring ACM (Polyacrylate) compound that withstands high temperatures and aggressive lubricants. With inner Ø 45 mm, outer Ø 65 mm, and dual thickness 10/14 mm, it provides excellent sealing performance and low friction
Type: Radial rotary shaft seal - oil seal, differential shaft
Material: ACM - heat resistant, oil-resistant polyacrylate
Design: B1BASLSFRD with dust lip to prevent contamination
OEM References: BMW 1214072, 33121214080, 33127621206
Key Benefits:
Durable sealing under harsh industrial and automotive conditions
Dust lip enhances protection against dirt and moisture
OEM fit for various BMW models, ensuring reliable maintenance
Crafted by CORTECO, part of Freudenberg’s trusted OEM-grade product line
Technical Specifications:
| Feature | Specification |
|---|---|
| Inner Diameter (d) | 45 mm |
| Outer Diameter (D) | 65 mm |
| Width / Thickness | 10 mm (primary) / 14 mm (dust lip) |
| Material | ACM (Polyacrylate) |
| Design Type | Radial oil seal with dust lip |
| Application | Differential shaft, BMW |
| Manufacturer | CORTECO (Freudenberg) |
| OEM Reference Numbers | 1214072, 33121214080, 33127621206 |
Q1: What is a Radial Oil Seal / Rotary Shaft Seal?
A radial oil seal, also called a rotary shaft seal, prevents oil leaks and excludes dirt where shafts rotate—essential in automotive differentials.
Q2: What does ACM material provide?
ACM (polyacrylate) offers high resistance to heat (up to ~150‑180 °C) and hydrocarbons, making it ideal for severe duty oil seals
Q3: Why include a dust lip?
The dust lip (Staubschutzlippe) enhances sealing by blocking debris and moisture, extending service life in demanding environments
Q4: Which BMW models use this seal?
Compatible with BMW with OEM numbers 1214072, 33121214080, 33127621206 - widely used across various models and years
Q5: Is this an original CORTECO part?
Yes - factory-original CORTECO part, OEM-grade, from the Freudenberg group.
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Data sheet