Jandy O-Ring, Energy Filter Replacement, R-Kit R0374500 Ring This makes the LN4100 well-suited

This makes the LN4100 well-suited for residential pools and routine service routes where speed and control matter

install in an area protected from direct impact and excessive splash whenever possible

Safe for Spa Water Balance & Equipment

Powerful Formula Designed for Spa Systems

Residential sand filters

Jandy O-Ring, Energy Filter Replacement, R-Kit R0374500 Ring This makes the LN4100 well-suitedThe Jandy R0374500 Energy Filter O Ring Replacement Kit is a genuine OEM seal kit designed for Jandy Energy Filter systems. Proper O ring sealing is critical to maintaining internal filter pressure, preventing water leaks, and ensuring consistent filtration performance. Over time, O rings lose elasticity due to heat, pressure cycles, and chemical exposure. Flattened, brittle, or cracked seals can allow air intrusion or water leakage at the tank seam.