Q: What are the main differences between O-rings and wedge seals?

A: O-rings are circular sealing components with a round cross-section that create a seal through compression between two surfaces. Wedge seals typically have a triangular or trapezoidal cross-section and are designed to fit into specific grooves, providing enhanced sealing under higher pressures. Wedge seals often offer better extrusion resistance and are commonly used in more demanding applications.

Q: How do I select the right material for my Secondary Seals (O-Rings, Wedges)?

A: Material selection depends on three key factors: 1) The chemical compatibility with the fluids in your system, 2) The operating temperature range, and 3) The pressure requirements. Nitrile is excellent for petroleum-based fluids at moderate temperatures, while Viton® is better for high-temperature applications with aggressive chemicals. EPDM performs well with steam and hot water, and silicone is ideal for food-grade or extreme temperature applications.

Q: What maintenance is required for Secondary Seals (O-Rings, Wedges)?

A: Regular inspection is crucial for optimal performance. Check for signs of wear, cracking, flattening, or chemical degradation. Typical maintenance includes: 1) Visual inspection during routine maintenance, 2) Replacement if any damage is detected, 3) Lubrication with compatible lubricants during installation, and 4) Monitoring system conditions that might affect seal life (temperature spikes, pressure surges, or chemical contamination). Most seals should be replaced during major overhauls even if they appear intact.