Oil Seal 140x170x14 AO FPM Double-Lip Rotary Shaft Seal

Applications

This FPM double-lip rotary shaft seal (140x170x14, profile AO) is designed for demanding industrial applications where reliable sealing is required under continuous rotation and contact with oils, lubricants, or fuel mixtures. It is commonly used in heavy machinery, gearboxes, pumps, agricultural equipment, compressors, and power transmission systems. The double-lip construction provides enhanced protection against lubricant leakage while preventing contamination ingress from dust or sludge, supporting long service life in tough operating environments.

Advantages

The sealing element is made from FPM (fluoroelastomer), a material known for its exceptional resistance to high temperatures, mineral oils, fuels, synthetic lubricants, and chemical exposure. This rotary shaft seal is engineered for stable performance under dynamic load conditions, maintaining sealing integrity even at elevated shaft speeds. The additional dust lip increases durability and protects the system from abrasive particles, contributing to reduced maintenance downtime and improved operating reliability.

Technical Features

• Size: 140x170x14 mm
• Profile: AO (double-lip configuration)
• Material: FPM (fluoroelastomer)
• Type: Rotary shaft oil seal / shaft sealing ring
• Temperature resistance: typically up to approx. +200°C (depending on lubrication and pressure)
• Suitable for industrial, automotive, hydraulic, and mechanical power systems

FAQ

What is the difference between a single-lip and a double-lip oil seal?
A single-lip seal focuses on sealing lubricants inside the system. A double-lip seal adds a secondary lip to protect against external contamination, improving durability.

Why choose FPM over NBR?
FPM seals offer superior resistance to high temperatures, oils, fuels, chemicals, and oxidation, making them ideal for heavy-duty and long-life applications.

How do I select the correct shaft seal size?
Match the seal inner diameter to the shaft diameter, the outer diameter to the housing bore, and ensure the profile and material match the working environment.