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518 (dynamic slide ring, double acitng)
AF-518’s primary advantages come from its innovative functional principle of having a trapezoidal profile, where the sides of the profile slope towards the seal surface. This design allows the seal to maintain a stable shape.
By allowing for a slight deformation, this shape causes the maximum compression to always shift towards the area of the seal edge that is directly exposed to pressure.
Two-part composition, consisting of a dynamic slide ring and an O-ring.
Advantages:
- Very good static performance
- Able to cope with a large extrusion gap
- Good performance in contaminated/dirty pressure fluids
- No stick-slip effect
Limitations:
- Operation pressure: Up to 50 MPa (500 bar)
- Velocity: Reciprocating up to 15 m/s
- Temperature: -40°C to 200°C