– Replacement 3.5” O-Rings for APEC Essence, Ultimate Reverse Osmosis RO Water F
Version A (P/N: O-RING-SET) is compatible with APEC ESSENCE RO units made before June, 2013 and ULTIMATE RO units made before May 2015. Compatible with APEC Reverse Osmosis Filter Housing Models: RO-45, RO-90, RO-PERM, RO-PUMP, ROES-50, ROES-PH75, ROES-UV75, ROES-UV75-55 and ROES-PHUV75.