U-cup seal U-N7

double lippolyurethaneplastic

Overview
The U-cup N7 is a one-piece, single-acting U-cup sealing element made from polyurethane (TPU). As an active seal, its sealing lips increase contact force as system pressure rises, providing reliable sealing in hydraulic circuits.

Design & Application
The N7 features a robust geometry with a secondary sealing lip to reduce stick-slip. It is optimized for hydraulic applications and can be used as both primary and secondary sealing due to excellent abrasion resistance. TPU versions are suitable for working pressures up to 40 MPa.

Material & Variants
The standard compound is TPU with a hardness of 93 Shore A. Other hardness grades and colors are available on request.

Fields of application

• Static applications
• Dynamic applications
• Single-acting cylinders
• Double-acting cylinders
• Linear motion
• Rotary motion
• Oscillating motion

Main use
Predominantly for hydraulic systems

Materials
Polyurethane (TPU)

Technical values

• Material: TPU
• Pressure: up to 40 MPa
• Temperature: -30°C to +100°C (material dependent)
• Speed: up to 0.5 m/s

Note
Maximum values for temperature, speed and pressure are not simultaneously applicable; actual limits depend on material and media.

Specifications

• Product type: one-piece U-cup sealing element
• Acting type: single-acting
• Primary material: TPU (polyurethane)
• Standard hardness: 93 Shore A
• Suitable as primary and secondary seal due to high abrasion resistance
• Working pressure capability: up to 40 MPa
• Operating temperature range: -30°C to +100°C (material dependent)
• Maximum sliding speed: up to 0.5 m/s
• Robust geometry with secondary sealing lip to reduce stick-slip