Grundfos Seals: RPW-112
Grundfos Seals: RPW-112
HydroMax Seal RPW-112 | Single Cartridge Mechanical Seal for Grundfos Pumps
The RPW-112 is a precision-engineered range of single-cartridge seals, developed specifically for Grundfos pump models with shaft sizes of 12 mm, 16 mm, and 22 mm. This Rotary Wet Pusher (RPW) seal features shrink-fitted faces, O-ring secondary seals, and is multi-spring and hydraulically balanced, ensuring optimal performance under varied operating conditions.
With no environmental ports, this is a plug-and-play solution designed for straightforward installation in Grundfos equipment. Each seal is supplied factory assembled and fully tested.
Product Description
Design Features
- Designed for direct fit with Grundfos pumps
- Multi-spring and hydraulically balanced for stable face loading
- Shrink-fitted faces and O-ring sealing
- No external flush or quench connections required
- Supplied fully assembled and tested
Technical Specifications
- Seal Shaft Sizes:
12mm, 16mm, 22mm - Inboard Seal Face Combination:
Car/TC, Car/SiC - Gasket:
GFT - Elastomers:
Viton, Alfas, EPR - Shaft Speeds:
up to 20 m/s - Pressures:
up to 16 barg (232 psig) — shaft size specific - Temperatures:
up to 110°C (230°F)
Seal Naming Designation
- RPW-112-GP012 – 12mm Shaft with Screwed Housing
- RPW-112-GP016 – 16mm Shaft with Screwed Housing
- RPW-112-GP022 – 22mm Shaft with Clamped Housing
Warning
The seal performance values listed are typical for each variable in isolation. Do not combine upper limits of speed, pressure, and temperature simultaneously. Always consult HydroMax for application-specific guidance.
