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Watts (FM20041-B) Flow-Max O-Ring for Flow-Max Housing, Flat Gasket Buna-N

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Watts (FM20041-B) Flow-Max O-Ring for Flow-Max Housing, Flat Gasket Buna-N

The Watts FM20041-B is a precision-molded Buna-N O-ring designed specifically for Flow-Max housing assemblies to maintain leak-free seals under pressure. This flat gasket construction ensures reliable performance in residential and light commercial water filtration applications.
SPECIFICATIONS

Technical Details

Manufacturer Watts
Model Number FM20041-B
Material Buna-N (Nitrile Rubber)
Gasket Type Flat O-Ring
Compatible Housing Flow-Max Series
Temperature Range 40°F to 180°F
Application Pressure Housing Seal
Replacement Interval Every 2-3 filter changes or annually
INSTALLATION & USE

Replacing Your Flow-Max O-Ring

  1. Depressurize the system and remove the Flow-Max housing sump from the cap assembly
  2. Remove the old O-ring from the groove and clean the seating surface with a damp cloth to remove debris or calcium deposits
  3. Lightly coat the new Buna-N O-ring with food-grade silicone grease and press evenly into the groove
  4. Reassemble the housing, hand-tighten firmly, then pressurize slowly while checking for leaks
COMPATIBILITY

Flow-Max Housing Systems

This FM20041-B O-ring is engineered exclusively for Watts Flow-Max filter housings. The Buna-N material provides excellent resistance to water, mild acids, and chlorinated water supplies, making it ideal for municipal and well water applications. Not compatible with petroleum-based fluids or applications requiring EPDM or Viton seals. Always verify your housing model before ordering replacement gaskets to ensure proper fit and seal integrity.

🔧 Apply a thin layer of silicone grease to the O-ring before installation to prevent pinching during assembly and extend seal life. Never use petroleum jelly, which degrades Buna-N rubber over time.
The Watts FM20041-B is a precision-molded Buna-N O-ring designed specifically for Flow-Max housing assemblies to maintain leak-free seals under pressure. This flat gasket construction ensures reliable performance in residential and light commercial water filtration applications.
SPECIFICATIONS

Technical Details

Manufacturer Watts
Model Number FM20041-B
Material Buna-N (Nitrile Rubber)
Gasket Type Flat O-Ring
Compatible Housing Flow-Max Series
Temperature Range 40°F to 180°F
Application Pressure Housing Seal
Replacement Interval Every 2-3 filter changes or annually
INSTALLATION & USE

Replacing Your Flow-Max O-Ring

  1. Depressurize the system and remove the Flow-Max housing sump from the cap assembly
  2. Remove the old O-ring from the groove and clean the seating surface with a damp cloth to remove debris or calcium deposits
  3. Lightly coat the new Buna-N O-ring with food-grade silicone grease and press evenly into the groove
  4. Reassemble the housing, hand-tighten firmly, then pressurize slowly while checking for leaks
COMPATIBILITY

Flow-Max Housing Systems

This FM20041-B O-ring is engineered exclusively for Watts Flow-Max filter housings. The Buna-N material provides excellent resistance to water, mild acids, and chlorinated water supplies, making it ideal for municipal and well water applications. Not compatible with petroleum-based fluids or applications requiring EPDM or Viton seals. Always verify your housing model before ordering replacement gaskets to ensure proper fit and seal integrity.

🔧 Apply a thin layer of silicone grease to the O-ring before installation to prevent pinching during assembly and extend seal life. Never use petroleum jelly, which degrades Buna-N rubber over time.
$5.84

Original: $16.70

-65%
Watts (FM20041-B) Flow-Max O-Ring for Flow-Max Housing, Flat Gasket Buna-N

$16.70

$5.84

Description

The Watts FM20041-B is a precision-molded Buna-N O-ring designed specifically for Flow-Max housing assemblies to maintain leak-free seals under pressure. This flat gasket construction ensures reliable performance in residential and light commercial water filtration applications.
SPECIFICATIONS

Technical Details

Manufacturer Watts
Model Number FM20041-B
Material Buna-N (Nitrile Rubber)
Gasket Type Flat O-Ring
Compatible Housing Flow-Max Series
Temperature Range 40°F to 180°F
Application Pressure Housing Seal
Replacement Interval Every 2-3 filter changes or annually
INSTALLATION & USE

Replacing Your Flow-Max O-Ring

  1. Depressurize the system and remove the Flow-Max housing sump from the cap assembly
  2. Remove the old O-ring from the groove and clean the seating surface with a damp cloth to remove debris or calcium deposits
  3. Lightly coat the new Buna-N O-ring with food-grade silicone grease and press evenly into the groove
  4. Reassemble the housing, hand-tighten firmly, then pressurize slowly while checking for leaks
COMPATIBILITY

Flow-Max Housing Systems

This FM20041-B O-ring is engineered exclusively for Watts Flow-Max filter housings. The Buna-N material provides excellent resistance to water, mild acids, and chlorinated water supplies, making it ideal for municipal and well water applications. Not compatible with petroleum-based fluids or applications requiring EPDM or Viton seals. Always verify your housing model before ordering replacement gaskets to ensure proper fit and seal integrity.

🔧 Apply a thin layer of silicone grease to the O-ring before installation to prevent pinching during assembly and extend seal life. Never use petroleum jelly, which degrades Buna-N rubber over time.