Secondary seals are elastomeric or polymeric components in mechanical seals that provide static sealing between rotating and stationary parts, preventing fluid leakage along the shaft.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Hardness | 70-90 Shore A (elastomers) | |
| Pressure Range | Up to 40 bar (static) | |
| Compression Set | <25% (after 24h at 150°C) | |
| Temperature Range | -60°C to 300°C (material dependent) | |
| Fluid Compatibility | Based on material selection | |
| Cross Section Diameter | 1.78mm to 8.4mm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A precision assembly that prevents fluid leakage between rotating and stationary parts in agitator systems
A device that prevents fluid leakage between rotating and stationary parts in a pump.
A sealing component that prevents fluid leakage and contaminant ingress in agitator and mixer systems.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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Manufacturer profiles associated with Secondary Seals.
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Primary seals are the main sealing faces (usually rotating/stationary faces) that handle dynamic sealing, while secondary seals provide static sealing between components and compensate for misalignments.
Replacement depends on operating conditions, but typically during mechanical seal overhaul (every 1-3 years) or when signs of hardening, cracking, or compression set exceed 25%.
Standard elastomers may degrade with abrasives; PTFE or FFKM materials with anti-extrusion rings are recommended for abrasive service.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.