CORTECO 49359771 B1SLRDFT LR Rotary Shaft Seal 75x93x8 - High-Temperature TFE/PPS Oil Seal for Cummins | AI-Powered Review

CORTECO 49359771 B1SLRDFT LR Rotary Shaft Seal 75x93x8 - High-Temperature TFE/PPS Oil Seal for Cummins (3921927 / 4025270) | AI-Powered Review

The CORTECO 49359771 B1SLRDFT LR Rotary Shaft Seal (75x93x8 mm) is a premium high-temperature oil seal designed for Cummins engines. Manufactured from advanced TFE (tetrafluoroethylene) and PPS (polyphenylene sulphide) compounds, this seal ensures exceptional resistance to heat, oil, fuel, and aggressive chemicals.

Its B1SLRDFT LR profile is engineered for low-friction sealing, optimized to deliver superior leak protection, reduced wear, and long service life. Fully compliant with OEM specifications, this seal directly replaces Cummins part numbers 3921927 and 4025270.

📋 Key Features

• Brand: CORTECO - OE quality sealing technology

• Material: TFE/PPS (fluoro-polymer composite with outstanding thermal and chemical resistance)

• Type: B1SLRDFT LR - low-friction multi-lip sealing profile

• Dimensions: ID 75 mm x OD 93 mm x Thickness 8 mm

• OEM Compatibility: Cummins 3921927, 4025270

• Function: Protects shafts against oil leakage, dust ingress, and high thermal loads

⚙️ Applications

• Cummins diesel engines - OEM replacement for crankshaft and rotating shafts

• Heavy-duty trucks, construction machinery, power units, and industrial equipment

• High-temperature sealing points requiring low friction and long life

❓ FAQ - Frequently Asked Questions

Q1: What makes TFE/PPS material unique?
A: TFE offers high chemical and thermal resistance, while PPS provides excellent mechanical stability. Together they ensure durability in the harshest environments.

Q2: Which Cummins part numbers does this seal replace?
A: OEM 3921927 and 4025270.

Q3: What is the size of this CORTECO seal?
A: Inner diameter 75 mm, outer diameter 93 mm, thickness 8 mm.

Q4: What does “B1SLRDFT LR” mean?
A: It denotes a special lip profile designed for low friction (LR) and enhanced sealing under high-duty cycles.

Q5: Is this seal available from stock?
A: Yes - 📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4 🚚 24h shipping - fast and efficient order processing.

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