Hydranautics Seawater RO Membranes

Hydranautics Seawater Reverse Osmosis RO Membranes

Supplying world-class membrane separation technology from one of the most well-established companies in the industry. Hydranautics has continued producing some of the finest reverse osmosis (RO) membranes for commercial, and industrial applications, including municipal and re-use projects.

Their proven track record of designing RO membranes with the goal of purifying high levels of impurities in various feed waters for these applications has given them a strong reputation throughout the world. Seawater, brackish, and tap water membranes have incorporated advanced features that have helped in mitigating issues such as efficiency within low operating pressures, certain feed water that requires pre-treatment, and cost-effectiveness problems. Check out the wide-range of products that are offered down below to see which membrane type best suits your needs.

Hydranautics 2.5'' Seawater Membranes


  • Size: 2.5" dia.
  • SWC-2521
  • SWC-2514
  • SWC-2540
Hydranutics 4'' Seawater Membranes


  • Size: 4"dia.
  • SWC-4021
  • SWC6-4040
  • SWC-4014
  • SWC5-4040
  • SWC5-LD-4040
Hydranutics 8'' Seawater Membranes


  • Size: 8"x40"
  • Area: 365, 400 & 440 ft2
  • High rejection/low energy
  • High rejection (SWC4)
  • Low Energy (SWC6)
Hydranautics Other Seawater Membranes


  • SWC4-1640
  • SWC5-1640

Pure Aqua has over 20 years of experience as a global provider of Reverse Osmosis Membranes from Hydranautics for the purposes of treating seawater through the removal of salts and total dissolved solids. These membrane elements provide water treatment systems with the filtration tools to efficiently produce fresh and potable water.

hydranautics seawater RO reverse osmosis membranes elements parts and components

Hydranautics Seawater RO Membranes



Hydranautics seawater SWC membranes are accessible in sizes from 2.5” to 8” elements, and facilitate high productivity, salt rejection, and consistent ultrapure water. Sea water membranes are constructed to cover various degrees of seawater worldwide with dependable and demonstrative performance. Hydranautics seawater desalination membranes provide benefits such as:

  • High productivity (permeate) flow
  • More than 99.7% Salt Rejection
  • More than 92% rejection of boron
  • Low levels of biological and colloidal fouling
  • High tolerance for pH cleaning
  • Low energy usage

The phenomenal performance and stability of sea water membranes develops a need for these elements in seawater desalination and industrial wastewater treatment applications that have high TDS levels.

Sea water membranes use LD Low differential LD Technology® to provide a minimization of colloidal fouling when used simultaneously with customary pre-treatment systems. They afford invariably low feed pressures and long-term performance between two consecutive cleanings.

MAX models consist of active membrane surface areas and offer quality performance with maximal TDS and boron elimination from warm feed waters.

Hydranautics Seawater Membrane Features

  • Improved resistance to chemicals due to enhancement of membrane chemistry
  • Advanced spacer design to reduce the trapping of small colloidal particles
  • Minimal biological fouling
  • Zero pressure impact damages during system operations

Applications for Hydranautics Seawater Membranes