Description
Mechanical Seal Grundfos Sarlin-65S is a shaft sealing component used in Grundfos Sarlin series pumps with a 65 mm shaft size.
General specifications
- Type: Single mechanical seal (spring-loaded / cartridge type depending on variant)
- Shaft size: 65 mm (65S designation)
- Application: Clean water, wastewater, and industrial fluid pumps
- Operating conditions:
- Pressure up to approximately 1.6 MPa (depending on seal design)
- Temperature range typically -30°C to 120°C, with higher limits depending on material selection
- Material configuration:
- Seal faces: Silicon Carbide (SiC), Carbon, Tungsten Carbide
- Elastomers: NBR, EPDM, or FKM (Viton)
Function
The mechanical seal prevents leakage of fluid along the rotating shaft while maintaining pressure integrity inside the pump. It ensures efficient pump operation and protects the motor and bearing system from contamination.
Compatibility
This seal is commonly used in:
- Grundfos Sarlin 65S / 65L pump series
- Compatible aftermarket equivalents with matching dimensions and design
Technical notes
Key variations may include:
- Seal length type (S or L version)
- Spring and seat design differences
- Material combinations for specific fluid compatibility
Replacement requirements
When selecting a replacement, the following must be matched precisely:
- Shaft diameter (65 mm)
- Pump model designation (Sarlin series code)
- Existing seal code or physical sample
If needed, I can help identify the exact replacement code based on your pump nameplate or an old seal sample.
