SKU: 4955465555

8"x40" Seawater | 13,700 GPD | 800 psi | 99.8% Rej | 400 ft2 | LG Chem RO Membrane

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Description

8"x40" Seawater | 13,700 GPD | 800 psi | 99.8% Rej | 400 ft2 | LG Chem RO MembraneLG Chem Nano H2O LG SW 400 ES Seawater (SWRO) Reverse Osmosis Membrane LG SW 400 R High Rejection membranes offer a combination of high rejection and low energy requirements to reduce the total cost of desalination; suitable for medium to high salinity seawater applications. LG Chems NanoH2O seawater RO membranes, incorporated with innovative Thin Film Nanocomposite (TFN) technology, reduce the cost of desalination while delivering superior water


LG Chem Nano H2O LG SW 400 ES Seawater (SWRO) Reverse Osmosis Membrane


LG SW 400 R High Rejection membranes offer a combination of high rejection and low energy requirements to reduce the total cost of desalination; suitable for medium to high salinity seawater applications.

LG Chem’s NanoH2O™ seawater RO membranes, incorporated with innovative Thin Film Nanocomposite (TFN) technology, reduce the cost of desalination while delivering superior water quality. LG seawater RO membranes provide the highest salt rejection with high freshwater productivity.

Each LG SW 400 R membrane element is supplied with one membrane interconnector.


LG SW 400 ES Compatibility Information

LG SW 400 ES Membrane Element can be used as a replacement for the below membrane elements in your existing water treatment equipment. Please note that additional hardware or adapters may be required - refer to the pressure vessel and element drawings, or contact us to verify.

  • FilmTec SW30oULE-400i
  • Hydranautics SWC6-LD

Specifications for LG SW 400 ES

LG Chem Product: LG SW 400 ES
Size (Approximate): 8" Dia. x 40"L
Flow Rate: 13,700 gpd (51.9 lpd)
Applied Pressure: 800 psig (55 bar)
Stabilized Salt Rejection: 99.8%
Minimum Salt Rejection: 99.6%
Boron Rejection: 89%
Active Surface Area: 400 ft2 (37 m2)
Single Element Recovery: 8%
End Style: Standard Flush Cut
Exterior: Hard Shell Fiberglass
Feed Spacer: 34 mil
Membrane Type: Thin Film Nanocomposite
Can Replace Elements:

FilmTec SW30oULE-400i
Hydranautics SWC6-LD

Test Conditions : 32,000 ppm NaCl at 25°C (77°F), 800 psi (55 bar), pH 8, Recovery 8%. Permeate flows for individual elements may vary +/-15%


Benefits & Features of LG Seawater Reverse Osmosis Membranes

  • Create Drinking Water from Seawater
  • Stabilized salt rejection of 99.8%
  • Boron Rejection up to 89%
  • Improved permeate quality without increasing operating pressure
  • Reduced energy cost without sacrificing the permeate quality
  • Reduced capital and operation costs for multi-pass SWRO systems
  • LG Chem NanoH2O™ RO membranes are Standard 61 certified by NSF international for the production of drinking water.

Markets & Applications for LG Chem Reverse Osmosis Membranes

Power Generation
  • Boiler feed for steam generation
  • Cooling tower makeup water
  • FGD process makeup water
  • Treatment of cooling tower blowdown
  • Condensate polishing
  • NOx cooling water
Petrochemical
  • Desalting water Cooling tower makeup
  • Treatment of cooling tower blowdown
  • Boiler feed for steam generation
  • Condensate polishing
Automotive
  • Paint booths
  • Electrocoat and phosphatizing lines
  • Machining coolant makeup
  • Parts rinsing
Semiconductor
  • Cleaning and etching agents
  • Chip fabrication
  • Rinsing
  • Silicon wafer dicing
  • Cooling
  • Clean room humidification
Desalination
Municipal
Food & Beverage
  • Bottled water
  • Syrup blending
  • Flavor production
  • Boiler feed for steam production
  • Dairy and cheese making
  • Coffee and tea production

Physical Dimensions of LG Chem LG SW 400 ES

INCHES (MM)
A 40 (1016)
B 7.9 (200)
C 1.125 (28.6)

LG SW 400 ES fits nominal 8" ID pressure vessels.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 4955465555

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Amazon Customer
Cuba, US
★★★★★ 5
amazing.
Item Package Quantity: 4, Size: Queen
WOW. I was really skeptical, but the other reviews are spot on: these are amazing firm pillows. I really hope they don't lose their firmness and become lumpy like other pillows tend to do. Excellent pillows for the price!!
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Reviewed in the United States on June 7, 2026
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Moranda
Port Orchard, US
★★★★★ 5
Great quality!! Great price
Item Package Quantity: 2, Size: Queen
Bought these for my mom and omg i like them better than the ones I got on Amazon theyre super comfy and they bounce back up they dont flatten and im definitely buying some next for me definitely worth the place great price and the make seems real good quality
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Reviewed in the United States on June 3, 2026
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Mack Mackenzie
Pawtucket, US
★★★★★ 4
These are very thick pillows.
Item Package Quantity: 2, Size: Queen
Exactly as advertised. They are very firm and very thick. They're too thick for me to be able to use as bed pillows. However, they seem to work pretty well as cushions in my papasan chair on top of its normal cushion also work very well as decorative pillows. I'm still giving them four stars because they're exactly as advertised and they seem well made. My only complaint is that they're just too thick. And that's definitely not the fault of the pillows or the pillow maker.
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Reviewed in the United States on May 12, 2026
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Robin Smith
Waukegan, US
★★★★★ 5
how good the product is
Item Package Quantity: 4, Size: Standard
These pillows are soft, fluffy, and surprisingly supportive for the price. They’re comfortable no matter how you sleep — whether on your side, back, or stomach — and they maintain their shape well overnight without going flat. The fabric cover feels smooth and breathable, keeping things cool through the night. After a few days of fluffing and use, they settle nicely into a perfect medium firmness. They also wash and dry easily without clumping. Overall, a great‑value pillow set that offers comfort, versatility, and quality — ideal if you need an affordable yet cozy bedding refresh.
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Reviewed in the United States on April 10, 2026
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“Just Me”, LMT
Boise, US
★★★★★ 5
Great Quality for a Great Proce!
Item Package Quantity: 2, Size: King
These pillows are very comfortable and maintain their shape. Quality is as described at a comfortable price for the quality! The pillows are comfortable; not overly firm nor flat. The density is medium and supportive; very comfortable!
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Reviewed in the United States on April 24, 2026

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