This split lock washer is designed to use with Pentair Star, Star Polymeric, SM & SMBW 4000 and 2000 series filter systems also compatible with Pentair EQ-Series commercial plastic pumps.
Features:
Washer lock replacement
Fits Pentair Star, Star Polymeric, SM & SMBW 4000 and 2000 series filter systems
Also fits Pentair EQ-Series commercial plastic pumps