Description
Mechanical Seal Grundfos Type Sarlin-50S
General Information
- Type: Mechanical Seal (Pump Shaft Seal)
- Series: Sarlin Type
- Application: Grundfos Sarlin pump systems and compatible industrial centrifugal pumps
- Size Range: Typically 50 mm shaft size (also available in other Sarlin variants depending on pump model)
- Design: Multi-spring / balanced mechanical seal (OEM replacement type)
Specifications
- Shaft Size: ~50 mm (model dependent variant available)
- Operating Temperature: -30°C to +200°C (depending on elastomer type)
- Operating Pressure: Medium to high pressure application (industrial pump standard)
- Sliding Speed: Up to approx. 15–20 m/s
- Design Type: Balanced mechanical seal with multi-spring construction
Materials
- Seal Faces: Silicon Carbide (SiC) / Tungsten Carbide (TC) / Carbon
- Stationary Ring: Silicon Carbide / Ceramic / TC
- Rotary Ring: Carbon / Silicon Carbide
- Elastomers: NBR / EPDM / FKM (Viton) / PTFE
- Metal Parts / Springs: Stainless Steel (SS304 / SS316)
Design Features
- Balanced design for stable operation under pressure
- Multi-spring construction for even face load distribution
- Suitable for abrasive and corrosive media
- High wear resistance and long service life
- Designed as OEM replacement for Sarlin Grundfos pump systems
- Reliable sealing performance in continuous operation
Applications
- Grundfos Sarlin pump systems
- Industrial wastewater pumps
- Sewage and slurry handling systems
- Paper pulp and process industry pumps
- Water treatment and heavy-duty pumping systems
- General industrial centrifugal pump applications





