Pentair O-Ring, JV18

Pentair JV18 Buna-N O-Ring Bag Kit For 1-1/2 Inch Side Mount MultiPort Valve; 2 Inch PVC Slide Valve; SM & SMBW 2000 Series

The Pentair JV18 O-Ring is a replacement sealing gasket used in Pentair multiport and slide valve systems. It’s commonly referred to as the rotor bottom or shaft O-ring for certain Pentair, Purex, and SM/SMBW filter and valve models.

Key Features & Benefits

Acts as a sealing ring around the rotor or shaft to prevent leaks and ensure proper water flow

Made from a compatible elastomer (often Buna-N / Buna-70) suited for pool chemical resistance

Drop-in replacement for Pentair and select OEM parts (often cross-referenced as O-47)

Used in 1½″ side-mount multiport valves, 2″ PVC slide valves, and Pentair SM/SMBW filters

Used On

• Pentair Purex SM | SMBW 4000 Series DE Filters
• Pentair PacFab 2 In. Hiflow Multiport Valves 261049, 261050, 261142
• Pentair American Products Side Mount 1-1/2 Inch Multiport Valves 50150111, 50160111
• Pentair 2 Inch PVC Slide Valves