2.5 mm Cross Section Polyurethane O-Rings

Due to the wide range of sizes, colors are shipped at random based on available stock. Available colors include red, natural, translucent, black, blue, green, and yellow. If you have any questions or color preferences, please contact the seller before placing your order.

Product Overview

Polyurethane O-Rings with a 2.5 mm cross section are designed for reliable sealing performance in industrial applications requiring high abrasion resistance, mechanical strength and long service life.

Manufactured from durable polyurethane (PU) material, these sealing rings provide excellent resistance to wear, extrusion and repeated mechanical movement. They are ideal for both static and dynamic sealing applications in hydraulic, pneumatic and industrial equipment.

Size Selection

Select size by:

Inside Diameter (ID) × Cross Section (CS)

Example:

(OD = ID + 2 × CS)

Key Features

• 2.5 mm cross section for medium-size sealing applications
• Excellent abrasion and wear resistance
• High tensile strength and tear resistance
• Good resistance to extrusion under pressure
• Suitable for dynamic and reciprocating sealing
• Long operating life in harsh industrial environments
• Available in standard and custom dimensions

Specifications

• Material: Polyurethane (PU)
• Cross Section: 2.5 mm
• Hardness: 70A / 80A / 90A / 95A (optional)
• Color: Red, Natural, Translucent, Black, Bue, Green or Custom
• Working Temperature: -40°C to +90°C (depending on grade)
• Application: Dynamic and static sealing

Applications

2.5 mm cross section polyurethane O-rings are commonly used in:

• Hydraulic cylinders
• Pneumatic systems
• Industrial machinery
• Automotive components
• Pumps and valves
• Automation equipment
• Mechanical sealing assemblies

Why Choose Polyurethane O-Rings?

Compared with NBR and silicone O-rings, polyurethane provides:

• Higher wear resistance than standard rubber materials
• Better mechanical durability
• Improved resistance to extrusion
• Reliable sealing under repeated movement

Related Sizes

Looking for another cross section?

• 1 mm Cross Section Polyurethane O-Rings
• 1.5 mm Cross Section Polyurethane O-Rings
• 1.78 mm Cross Section Polyurethane O-Rings
• 1.8 mm Cross Section Polyurethane O-Rings
• 1.9 mm Cross Section Polyurethane O-Rings
• 2 mm Cross Section Polyurethane O-Rings
• 2.4 mm Cross Section Polyurethane O-Rings
• 2.5 mm Cross Section Polyurethane O-Rings
• 2.65 mm Cross Section Polyurethane O-Rings
• 3.1 mm Cross Section Polyurethane O-Rings
• 3.5 mm Cross Section Polyurethane O-Rings
• 4 mm Cross Section Polyurethane O-Rings