Seawater Desalination Membranes

Our Seawater Reverse Osmosis Membranes offer the highest productivity while maintaining excellent salt rejection

Seawater RO Membranes

Seawater reverse osmosis (SWRO) membranes are designed for high-salinity water treatment and desalination applications, delivering high salt rejection and reliable freshwater production from seawater.

MDC Water supplies seawater RO membranes in Australia for marine watermakers, boats and yachts, coastal facilities, commercial desalination systems and industrial water treatment plants. Our range includes high-rejection SWRO membranes from leading manufacturers, with popular 2521, 2540, 4040 and 8040 sizes available for replacement and new RO systems.

Replacing an existing seawater membrane? Send us the membrane model number and we can help identify a suitable replacement.

2.5 inch Seawater Watermaker Reverse Osmosis Membranes

Compact 2.5" seawater RO membranes designed for high salt rejection and reliable freshwater production from seawater. Ideal for marine watermakers, boats, yachts and small desalination systems, with popular 2521 and 2540 sizes available.

Filmtec SW30-2540 Watermaker RO Membrane
-7%

Filmtec SW30-2540 Watermaker RO Membrane

Regular price $510.00
Sale price $510.00 Regular price $550.00
Unit price
SW30-2540 DuPont Filmtec Reverse Osmosis Sea Water Membrane SW30-2540 DuPont Filmtec 2.5″ x 40″ Seawater...
-8%

Filmtec SW30-2521 Watermaker RO Membrane

Regular price $530.00
Sale price $530.00 Regular price $580.00
Unit price
SW30-2521 Dupont Filmtec 2.5″ x 21″ Watermaker & Desalinator Membrane, Seawater Membrane. Genuine Filmtec SW30-2521 is...
-21%

Watermaker RO Membrane Filter Vontron SW11-2540

Regular price $395.00
Sale price $395.00 Regular price $500.00
Unit price
Watermaker Membrane Replacement Filter Vontron SW11-2540 Vontron SW11-2540, 2.5″ x 40″ Watermaker Membrane Filter. Replaces...
Watermaker Membrane Vontron SW11-2521
-21%

Watermaker Membrane Vontron SW11-2521

Regular price $385.00
Sale price $385.00 Regular price $490.00
Unit price
Watermaker Membrane Replacement Vontron SW11-2521 Vontron SW11-2521, 2.5″ x 21″ Watermaker Membrane Replacement, Seawater. Replaces Filmtec...

2.5 inch Seawater Membrane Housings (Vessels)

2.5"x40" Watermaker Membrane Pressure Vessel
-15%

2.5"x40" Watermaker Membrane Pressure Vessel

Regular price $465.00
Sale price $465.00 Regular price $550.00
Unit price
2.5" x 40" RO Membrane Housing, 1000 PSI, 2540 Housing 1000 PSI Membrane Housing For...
2.5"x21" Membrane Pressure Vessel
-17%

2.5"x21" Membrane Pressure Vessel

Regular price $395.00
Sale price $395.00 Regular price $480.00
Unit price
Membrane Housing for Watermakers & Seawater Desalination Systems 2.5 inch x 21 inch RO membrane...

4 inch Seawater Reverse Osmosis Membranes

4" seawater RO membranes provide high salt rejection and reliable freshwater production for commercial and industrial desalination systems. Ideal for seawater RO plants, marine applications and coastal facilities, with standard 4040 membrane sizes available.
-16%

Vontron SW4040LE Seawater RO Membrane

Regular price $570.00
Sale price $570.00 Regular price $680.00
Unit price
Hi Flow 4040 Seawater RO Membrane, Vontron SW4040LE 4”x40” Sea Water Membrane 1,900 gpd /...
Hydranautics SWC5-LD-4040
-7%

Hydranautics SWC5-LD-4040

Regular price $665.00
Sale price $665.00 Regular price $720.00
Unit price
4040 Seawater Membrane, Hydranautics SWC5-LD-4040 4”x40” Sea Water RO Membrane 1,750 gpd / 99.7% / 800...

8 inch Seawater Reverse Osmosis Membranes

8" seawater RO membranes are designed for high-capacity desalination systems, providing high salt rejection and reliable freshwater production. Ideal for large commercial and industrial SWRO plants using standard 8040 membrane sizes.

Contact us for available SWRO 8040 membrane models, specifications, pricing and lead times.