Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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5" Sediment Water Filters

5" Polyspun and Pleated Sediment Replacement Water Filters

Pentek Replacement Water Filter Cartridges Compatible With Ametek, US Filter, Plymouth, Culligan, American Plumber, Kleen Plus and Many Orther Brands Replacement Sediment Water Filters

4 7/8" Long X 2 1/2" Diameter Replacement Sediment Filter Cartridges for 5" Water Filter Housings

  See 5" GAC and Carbon Block Replacement Water Filters

  1. Pentek P5-478 # 155030 P5 478 Sediment Replacement Water Filter Cartridge
    Pentek P5-478 # 155030 P5 478 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek P5-478 # 155030 P5 478 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. 5 micron Sediment Spun Polypropylene Sediment Water Filter 4 7/8" long X 2 1/2" diameter. 24 per case, sold individually. Ametek # 155030 P-Series cartridges are manufactured from 100% pure polypropylene fibers. The fibers have been carefully spun together to form a true gradient density from outer to inner surfaces. These cartridges are designed for purity. They will not impart taste, odor or color to the liquid being filtered when used within the recommended temperature limit. Also, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack. The coreless strength of the cartridges is achieved by sintering the many fibers into a solid matrix. Order a case and save even more. Learn More
    $8.99 Special Price $5.99 As low as $2.99
  2. Pentek R30-478 # 155031 R-30-478 Sediment Pleated Replacement Water Filter Cartridge
    Pentek R30-478 # 155031 R-30-478 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek R30-478 # 155031 R-30-478 Sediment Water Filter Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands Pleated Polyester 30 Micron Sediment Water Filter. 4 7/8" long X 2 1/2" diameter 24 per case, sold individually. Ametek # 155031 R Series cartridges are manufactured from a durable, non-woven and reusable polyester fabric that is suitable for a wide range of filtration uses. The media is pleated to maximize dirt-holding capacity and extend the time period between changes or cleaning. R Series cartridges are resistant to both bacteria and chemical attack making them suitable for a variety of residential, commercial and industrial applications. Order a case and save even more. Learn More
    $12.99 Special Price $8.99 As low as $6.99
  3. Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench
    Pentek SW-1A # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-1 # 150539 SW1 Slim Line Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-1 Water Filter Housing Wrench. Fits 4" Slim Line Housings. (Slim Line Housings Have A 3 1/2" diameter "O" Ring) Ametek # 150294 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. Fits most standard style RO systems. Replaces 150294. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Order New O-rings And Be Sure To Lube Them With Dow 111 Silicone Sealant To Prevent Leaks Learn More
    $9.99 Special Price $6.99 As low as $4.99
  4. PENTEK- #151121- Slim-Line Water Filter Housing Replacement - 1000
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring. Learn More
    $5.69 Special Price $4.99 As low as $3.00
  5. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

    Learn More
    $5.99 Special Price $3.99 As low as $1.79
  6. Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer. 0.25 or 0.5 fl. oz. concentrate. Sani-System ® Pro Products is proud to introduce Sani-System, the first and only EPA product approved for sanitizing water softeners, RO units and Water Coolers. Sani System is proven to kill 99.9% of E. coli, E. coli O157:H7, Staphylococcus aureus, Listeria monocytogenes and other harmful bacteria. It does not use chlorine, other oxidizers or acids that can harm water softener equipment parts. Use is simple; each dose comes in a pre-measured pouch. Just cut, pour and regenerate softener. No measuring, No mess! Sanitizing Equipment! Applications Interior Surfaces of Water Softeners, Reverse Osmosis (RO) Units, Ice Machines, Water Coolers, Water Holding Tanks and Pressure Tanks. Sani-System is now NSF certified! This is the best sanitizing solution available anywhere! Stock up and save. Learn More
    $7.99 Special Price $4.99 As low as $2.49
  7. Pentek # 153014 5 inch Replacement Water Filter System Sump Housing
    Pentek # 153014 5 inch Replacement Water Filter System Sump Housing
    Pentek # 153014 5 inch Replacement Water Filter System Sump. Also fits most Culligan, Ametek, US Filter, Plymouth, Kleen Plus, American Plumber, Bruner and many other brands. Slim Line 5" Replacement Sump - # 153014 - Fits Housings Using 3 1/2" Diameter Slim Line O-Rings. O-rings Sold Seperately. Be Sure To Lubricate New O-rings With Dow 111 Silicone Sealant. Priced in Blue. Clear available for additional amount. Learn More
    $23.99 Special Price $14.99 As low as $10.99
  8. Pentek ® 158002 SlimLine 5 Inch Water Filter Housing
    Pentek ® 158002 SlimLine 5 Inch Water Filter Housing
    Pentek ® 158002 SlimLine 5" Water Filter Housing. 3/8" Female NPT Threads. For 5" replacement water filter cartridges. Built in pressure relief valve provides easier filter changing. Learn More
    $28.99 Special Price $19.99 As low as $16.99
  9. Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit
    Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit
    Pentek ® 244047 SlimLine Water Filter Housing Mounting Bracket Kit. For all 5", 10" & 20" Pentek SlimLine Water Filter Housings. Bracket and screws. Learn More
    $9.99 Special Price $6.99 As low as $4.29
  10. John Guest Super Speedfit Quick Connector - Male - Straight
    John Guest ® Super Speedfit Quick Connector - Male - Straight
    John Guest ® Super Speedfit Quick Connectors - Male - Straight - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI010821S , PI010822S , PI010823S, PI011222S , PI011223S Learn More
    $8.99 Special Price $4.99 As low as $3.99
  11. John Guest Super Speedfit Quick Connector - Male - Elbow
    John Guest ® Super Speedfit Quick Connector - Male - Elbow
    ohn Guest ® Super Speedfit Quick Connector - Male - Elbow - John Guest Super Speedfit Quick Connectors - Male - MNPT - Sold in pairs. Price is per pair. These fittings are manufactured in gray acetal copolymer with food grade nitrile ‘o’ ring, making them especially suitable for applications involving foodstuff and potable liquids like reverse osmosis drinking water. They are equally suitable for air and inert gasses and can therefore be used on CO2 lines, pneumatic applications, and vacuum. For more than a decade, John Guest has been supplying Super Speedfit fittings to the Water Purification market for drinking water applications in homes, restaurants and industry. John Guest products are listed with the WRC(UK), NSF(US) and SK(Germany). PI480821S , PI480822S , PI480823S , PI481222S , PI481223S Learn More
    $8.99 Special Price $4.99 As low as $3.99
  12. Inline Water Shut Off Valve-1000
    Inline Water Shut Off Valve - Great For Refrigerators And Ice Machines
    Inline Water Shut Off Valve With 1/4" or 3/8" Quick Connect Fittings - Very easy to install and use. - Great for refrigerators, UV systems, chillers, hot pots, coffee machines, ice machines etc. Learn More
    $14.99 Special Price $9.99 As low as $6.99

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.