CORTECO 12011658 FPM Oil Seal (31x62.1x5.8/4.3)

Main Description

The CORTECO 12011658 is a high-performance rotary shaft seal crafted for demanding industrial and automotive environments. With precise dimensions of 31 mm inner diameter, 62.1 mm outer diameter, and a cross-section profile of 5.8 mm / 4.3 mm, this oil seal provides reliable sealing on rotating shafts under various operating conditions.

Constructed from premium-grade FPM (fluoroelastomer), this shaft sealing ring offers excellent resistance to oils, grease, and high temperature, making it ideal for engine and gearbox applications. The B1VISFDRW design ensures a robust lip geometry that maintains optimal sealing performance over extended service intervals.

This technical seal is particularly suited to automotive applications, such as Piaggio models (OEM reference 242550), where its durability and precise fit guarantee minimal leakage and long-term reliability. Additionally, it performs excellently in industrial machinery, including pumps, motors, and rotating assemblies, providing a rotary seal solution that reduces maintenance costs and improves system uptime.

Thanks to its engineering, the seal delivers high durability, low friction, and minimal energy loss. The advanced lip design minimizes wear, while the FPM material ensures sustained elasticity and sealing integrity even under thermal cycling.

Technical Specifications

• Material: FPM (fluoroelastomer)

• Design: B1VISFDRW lip profile

• Seal Type: Rotary / oil seal

• Inner Diameter (d): 31 mm

• Outer Diameter (D): 62.1 mm

• Cross-section: 5.8 mm (lip) / 4.3 mm (profile)

• Application: Engine shafts, gearboxes, automotive and industrial rotating equipment

• Performance Features: High resistance to oils and grease, excellent thermal stability, long service life

FAQ

Q1: What is FPM and why is it used for this oil seal?
A1: FPM (fluoroelastomer) is a high-performance rubber that offers outstanding resistance to oils, grease, heat, and aggressive fluids — making it ideal for demanding sealing tasks.

Q2: How do I know this seal fits my shaft?
A2: Measure your shaft diameter (31 mm in this case), the housing bore (62.1 mm), and required cross-section (5.8 mm lip, 4.3 mm profile). Then match to this seal's specification.

Q3: Can this seal be used for Piaggio engines?
A3: Yes, this model corresponds to OEM Piaggio reference 242550, making it an excellent choice for compatible engine shaft sealing.

Q4: What makes this seal durable?
A4: The combination of FPM material and engineered lip geometry ensures low wear, minimal leakage, and long-term performance under rotating conditions.

Q5: Is this oil seal suitable for industrial machinery?
A5: Absolutely — it’s designed for both automotive and industrial applications, such as motors, pumps, and rotating units, thanks to its high durability and resistance.