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.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

O-Rings & Sealant

O-Rings & Sealant

Replacement O-rings For Slim Line, Big Blue And Standard Water Filter System Housings

Dow 111 Silicone Sealant And Lubricant For O-rings

If you do not know the correct O-ring size for your system, you will need to open the filter housing to measure the diameter of the O-ring. The same filters fit in different size filter housings using different size O-rings. The O-ring size is not tied to the filter, but to the filter housing.

Page
  1. Amway * ® Compatible Fit O-ring for Amway E-9225 Water Filter Systems
    Amway * ® Compatible Fit O-ring for Amway E-9225 Water Filter Systems
    Amway * ® Compatible Fit O-ring for Amway E-9225 and E-9230 Drinking Water Systems. 5" I.D. x 5 3/8" O.D. x 3/16" cross section or thickness. Remember to order Dow 111 o-ring silicone sealant to help prevent leaks. Learn More
    $13.99 Special Price $9.99 As low as $6.99
  2. AMWAY- VA-5436- O-Ring for E-9395 Compact System and 9396 Water Filter Cartridge- 1000
    Amway * ® VA-5436 Compatible Fit O-ring for E-9395 Compact Water Treatment System and 9396 Filter Cartridge
    Amway * ® Compatible VA-5436 Fit O-ring for E-9395 Compact Water Treatment System filter housing that ues the E-9396 replacement drinking water filter cartridge. 3 ¼" O.D. x 3 7/16" I.D. x 3/32" cross section or thickness. Use as a o-ring replacement for the Amway VA-5436 o-ring. Be sure to order Dow 111 o-ring silicone sealant to help prevent leaks.

    Be Sure To Order Dow 111 Silicone Sealant To Help Prevent Leaks!

    Learn More
    $12.99 Special Price $9.99 As low as $5.99
  3. AquaPure Drinking Water Filter Housing O-ring #63597174 by 3M CUNO
    AquaPure Drinking Water Filter Housing O-ring #63597174 by 3M Purification
    AquaPure Drinking Water Filter Housing O-ring #63597174 by 3M Purification. Keep your system from leaking and causing expensive damages by replacing your o-rings every other time you change your water filters. Be sure to order Dow 111 silicone sealant so the o-rings will seal properly. Never use petroleum based greases such as Vasoline. Use the best sealant, use Dow 111 silicone. Learn More
    $8.99 Special Price $4.99 As low as $3.29
  4. 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
  5. Vu-Flow NT 120S O-rings for 2 Inch Vu-Flow Reusable Sediment Screen Filters
    Vu-Flow NT 120S O-rings for 2 Inch Vu-Flow Screen Filters
    Vu-Flow NT 120S O-rings for 2 Inch Vu-Flow Screen Filters. Fits all NT and Combo Style Vu-Flow sand and sediment screen filters. Learn More
    $8.99 Special Price $6.99 As low as $5.99
  6. Vu-Flow NT 30S O-rings for 1 Inch Vu-Flow Screen Spindown Screen Water Filters
    Vu-Flow NT 30S O-rings for 1" Vu-Flow Screen Spindown Replacement Screen Water Filters
    Vu-Flow NT 30S O-rings for 1 Inch Vu-Flow Screen Spindown Screen Water Filters. Fits all NT and Combo Style VuFlow sand and sediment spindown screen water filters. Be sure to use Dow 111 silicone sealant on the o-ring to prevent leaks. Learn More
    $8.99 Special Price $5.99 As low as $4.59
  7. Vu-Flow NT 60S O-rings for 1 & 1 1/2 Inch VuFlow Spindown Screen Water Filters
    Vu-Flow NT 60S O-rings for 1 & 1 1/2 Inch Vu-Flow Screen Filters
    Vu-Flow NT 60S O-rings for 1 and 1 1/2" Vu-Flow Screen Filters. Fits all NT and Combo Style Vu-Flow sand and sediment screen filters. Learn More
    $8.99 Special Price $6.99 As low as $5.49
  8. JG Replacement O-ring
    John Guest Quick Connector Replacement O-Ring 3/8" - 5-Pack

    John Guest CP-R121-S 3/8" Replacement O-ring - 5 PER PACK

    John Guest Quick Connector Replacement O-Ring 3/8" - 5-Pack

    Learn More
    $8.79 Special Price $5.49
  9. O-Ring-Import-10- 1000
    Water Filter Housing O-Ring - O.D. 90mm (3 3/4") I.D. 85mm (3 3/8") CS 5mm #o-ring-import-10 (HKF-1014WW)

    Water Filter O-Ring - O.D. 90mm (3 3/4") I.D. 85mm (3 3/8") CS 5mm #o-ring-import-10 - HKF-1014WW

    O-Ring - Be sure to use Dow 111 Silicone Sealant to help prevent leaks.

    Learn More
    $4.99
  10. 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
  11. Dow Corning/ Molykote 111 5 oz. O-Ring Silicone Sealant-1000
    Dow Corning - Molykote ® 111 5 oz. O-Ring Silicone Sealant - Be sure to lube your O-rings to help prevent leaks
    Dow Corning/MolyKote 111 ® 5.3 ounce Tube of O-Ring Silicone Sealant and Lubricant. FDA and NSF approved. Simply the best! (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Filter 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? Learn More
    $24.99 Special Price $17.49 As low as $16.95
  12. Pentek # 151120 O-Ring Replacement For Standard Size Water Filter Housings
    Pentek # 151120 O-Ring Replacement For Standard Size Water Filter Housings
    Pentek # 151120 O-Ring Replacement For Standard Size Water Filter Housings Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Standard Size Water Filter Housing. Buna-N FDA Grade. (Standard Size Housings Use A 4" diameter O-Ring) Same as Culligan OR-34 O-ring. Learn More
    $7.99 Special Price $4.99 As low as $2.79
  13. Pentek # 151122 Replacement O-Ring For Big Blue Water Filter Housing - O ring
    Pentek # 151122 O-Ring For Big Blue Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151122 O-Ring For Big Blue Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Big Blue Water Filter Housing. Buna-N FDA Grade. (Big Blue Housings Use A 5 3/4" diameter "O" Ring) Ametek # 151122 Same as Culligan OR-100 for HD-950 Learn More
    $13.99 Special Price $9.99 As low as $6.99
  14. Pentek # 151254 O-Ring For Big Clear Water Filter Housing
    Pentek # 151254 O-Ring For Big Clear Water Filter Housing
    Pentek # 151254 O-Ring For Big Clear Water Filter Housing - Square Cut - Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Big Clear Water Filter Housing. Buna-N FDA Grade. (Big Clear Housings Use A 5 3/4" diameter "O" Ring) Pentek # 151254. - Be sure to lube the o-ring with Dow 111 silicone sealant to help prevent leaks. Learn More
    $17.99 Special Price $12.99 As low as $9.49
  15. Culligan OR-233 Replacement Water Filter Housing O-ring
    Culligan OR-233 Replacement Water Filter Housing O-ring
    Culligan ® OR-233 O-ring # 411310 for Culligan US-600, US-640, SY-2000, SY-2300 and SY-2500, SY-2650 and Ace 4158622. 3" Diameter. Learn More
    $7.99 Special Price $4.99 As low as $3.79
  16. Hydrotech ® 34201026, Hydrofiner & Aquafier O-ring for water filter housing sump
    Hydrotech ® 34201026 & Aquafier O-ring for filter housing
    Hydrotech ® 34201026 & Aquafier O-ring for filter housing. Fits Hydrotech, Aquafier and Hydrofiner systems. 2 1/2" diameter Learn More
    $8.99 Special Price $4.99 As low as $3.39
  17. Microline / Clack ® S3069 water filter housing o-ring
    Microline / Clack ® S3069 o-ring
    Microline / Clack ® S3069 o-ring. Fits Microline - Clack sump #S7029. Replace O-rings when changing the filters to help prevent leaks. Be sure to replace the o-rings in all older systems. Be sure to use Dow 111 Silicone sealant to help prevent leaks. Learn More
    $8.99 Special Price $5.99 As low as $3.99
  18. Aqua-Pure-o-ring-bb-6889832 for 3M CUNO Water Filter Housings
    Aqua-Pure o-ring bb 6889832 for 3M Purification Water Filter Housings
    AquaPure Drinking Water Filter Housing O-ring #6889832 by 3M Purification. Keep your system from leaking and causing expensive damages by replacing your o-rings every other time you change your water filters. Be sure to order Dow 111 silicone sealant so the o-rings will seal properly. Never use petroleum based greases such as Vasoline. Use the best sealant, use Dow 111 silicone. Learn More
    $8.99 Special Price $4.99 As low as $3.29
  19. Culligan OR-3 O-ring Kit With Three O-rings for Water Filter Housings
    Culligan OR-3 O-ring Kit With Three O-rings for Water Filter Housings
    Culligan ® OR-3 O-ring Kit With Three O-rings. Kit includes one OR-34, one OR-38 and one OR-223 Orings. Often ordered by those who aren't quite sure which one is the right O-ring. # 151250 Learn More
    $14.99 Special Price $9.99 As low as $7.99
Page

Be sure to check our Parts Departmentfor important parts such as TDS Testers, Replacement Tanks, O-rings,Housing Wrenches and more parts for your reverse osmosis pure water system.