1.78 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

1.78 mm cross section polyurethane O-rings are designed for compact sealing applications requiring high wear resistance, excellent mechanical strength and reliable sealing performance.

Made from high-performance polyurethane (PU) elastomer, these O-rings provide superior abrasion resistance compared with conventional rubber materials, making them suitable for dynamic sealing applications where repeated movement and friction occur.

Available in multiple inside diameter (ID) and outside diameter (OD) combinations, our 1.78 mm CS polyurethane O-rings can be supplied for standard industrial applications or customized requirements.

Size Selection

Select size by:

Inside Diameter (ID) × Cross Section (CS)

Example:

(OD = ID + 2 × CS)

Key Features

High Wear Resistance

Polyurethane offers excellent abrasion resistance, making these O-rings ideal for applications involving:

• Sliding motion
• Reciprocating movement
• Hydraulic cylinders
• Pneumatic equipment

High Mechanical Strength

Compared with standard rubber O-rings, polyurethane provides:

• Higher tear resistance
• Better extrusion resistance
• Excellent compression recovery
• Longer service life under mechanical stress

Reliable Industrial Sealing Performance

1.78 mm CS PU O-rings provide dependable sealing in:

• Hydraulic systems
• Pneumatic systems
• Automation equipment
• Industrial machinery
• Precision components

Available Specifications

Cross Section

1.78 mm

Hardness Options

Available hardness:

• 70 Shore A
• 80 Shore A
• 90 Shore A
• 95 Shore A

Typical Applications

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

Hydraulic & Pneumatic Equipment

• Hydraulic valves
• Small cylinders
• Pneumatic actuators

Industrial Equipment

• Automation systems
• Precision machinery
• Control components

General Sealing Applications

• Oil sealing
• Pressure sealing
• Moving components

Why Choose Polyurethane O-Rings?

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

Property                                     PU O-Rings

Wear Resistance                        Excellent

Tear Strength                               Excellent

Oil Resistance                             Good

Dynamic Sealing                          Excellent

High Temperature Resistance       Moderate

Custom Polyurethane O-Ring Manufacturing

We supply polyurethane O-rings with:

• Custom dimensions
• Different hardness options
• Custom colors
• OEM production
• Bulk quantities

Need a specific size or material requirement?

Related Sizes

Looking for another cross section?

• 1 mm Cross Section Polyurethane O-Rings
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• 2.5 mm Cross Section Polyurethane O-Rings
• 2.65 mm Cross Section Polyurethane O-Rings
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