5/16" Stainless Steel Washer for the Following Pentair Products:
- Pentair Star Filters
- Pentair Star Polymeric Filter Systems
- Pentair FNS Filters
- Pentair SM & SMBW 2000 Series Filters
- Pentair SM & SMBW 4000 Series Filters
- Pentiar Nautilus Filters
- Pentair Nautilus Plus Filters
- Pentair Challenger High Flow Pumps
- Pentair Challenger High Pressure Pumps
