( HE-H6813-2) - 2ND ORING FOR BB HSG
HE-H6813-2 Secondary O-Ring for Big Blue Filter Housings
The HE-H6813-2 is a precision-molded secondary O-ring that creates a watertight seal at the second seal point in Big Blue filter housings, working alongside the primary O-ring to eliminate leaks and prevent untreated water bypass. Regular replacement of both sealing components maintains consistent system pressure and protects against the water damage and filtration failure that occurs when compression-set O-rings lose their sealing effectiveness.
| Part Number | HE-H6813-2 |
| Application | Secondary seal for Big Blue filter housings |
| Material | NSF-certified food-grade elastomer |
| Seal Position | Second seal point (backup/bypass prevention) |
| Chemical Resistance | Chlorine and chloramine resistant |
| Temperature Range | 40°F to 100°F operating range |
| Replacement Interval | Every filter change or annually minimum |
| Certification | NSF-certified for potable water contact |
Primary Seal Point
The primary O-ring creates the initial seal at the housing cap interface, bearing the majority of system pressure and establishing the first barrier against leakage in Big Blue housings from Pentek, Culligan, DuPont, and generic systems.
Backup Seal and Bypass Prevention
The HE-H6813-2 secondary O-ring establishes a second seal point, preventing any water that passes the primary seal from bypassing the filter cartridge and ensuring all flow travels through the filtration media rather than around it.
System Integrity Under Load
The dual O-ring design maintains consistent seal compression across varying flow rates and pressure conditions, preventing the micro-channels that develop when single-seal systems experience thermal expansion or pressure fluctuations in whole-house applications.
Long-Term Performance in Chlorinated Water
NSF-certified food-grade elastomer construction resists degradation from chlorine and chloramine exposure in municipal water systems, maintaining seal flexibility and compression memory across the 40°F to 100°F operating temperature range.
The HE-H6813-2 secondary O-ring fits all standard 10-inch and 20-inch Big Blue filter housings that use a dual O-ring sealing design, including Pentek Big Blue housings, Culligan whole-house filter systems, DuPont Universal housings, and most generic Big Blue-style housings found in residential and light commercial water treatment installations. This component is essential for multi-stage filtration configurations, sediment pre-filtration systems, carbon filtration setups, and any whole-house application where dual O-ring sealing architecture is specified to prevent bypass and maintain treatment effectiveness.
Leak Prevention
Dual-seal design eliminates the housing leaks and pressure loss that occur when primary seals age
Bypass Protection
Secondary seal ensures all water flows through the filter cartridge rather than around it
Chemical Resistance
NSF-certified elastomer maintains flexibility and seal integrity in chlorinated municipal water
Universal Fit
Compatible with all standard 10" and 20" Big Blue housings using dual O-ring architecture
HE-H6813-2 Secondary O-Ring for Big Blue Filter Housings
The HE-H6813-2 is a precision-molded secondary O-ring that creates a watertight seal at the second seal point in Big Blue filter housings, working alongside the primary O-ring to eliminate leaks and prevent untreated water bypass. Regular replacement of both sealing components maintains consistent system pressure and protects against the water damage and filtration failure that occurs when compression-set O-rings lose their sealing effectiveness.
| Part Number | HE-H6813-2 |
| Application | Secondary seal for Big Blue filter housings |
| Material | NSF-certified food-grade elastomer |
| Seal Position | Second seal point (backup/bypass prevention) |
| Chemical Resistance | Chlorine and chloramine resistant |
| Temperature Range | 40°F to 100°F operating range |
| Replacement Interval | Every filter change or annually minimum |
| Certification | NSF-certified for potable water contact |
Primary Seal Point
The primary O-ring creates the initial seal at the housing cap interface, bearing the majority of system pressure and establishing the first barrier against leakage in Big Blue housings from Pentek, Culligan, DuPont, and generic systems.
Backup Seal and Bypass Prevention
The HE-H6813-2 secondary O-ring establishes a second seal point, preventing any water that passes the primary seal from bypassing the filter cartridge and ensuring all flow travels through the filtration media rather than around it.
System Integrity Under Load
The dual O-ring design maintains consistent seal compression across varying flow rates and pressure conditions, preventing the micro-channels that develop when single-seal systems experience thermal expansion or pressure fluctuations in whole-house applications.
Long-Term Performance in Chlorinated Water
NSF-certified food-grade elastomer construction resists degradation from chlorine and chloramine exposure in municipal water systems, maintaining seal flexibility and compression memory across the 40°F to 100°F operating temperature range.
The HE-H6813-2 secondary O-ring fits all standard 10-inch and 20-inch Big Blue filter housings that use a dual O-ring sealing design, including Pentek Big Blue housings, Culligan whole-house filter systems, DuPont Universal housings, and most generic Big Blue-style housings found in residential and light commercial water treatment installations. This component is essential for multi-stage filtration configurations, sediment pre-filtration systems, carbon filtration setups, and any whole-house application where dual O-ring sealing architecture is specified to prevent bypass and maintain treatment effectiveness.
Leak Prevention
Dual-seal design eliminates the housing leaks and pressure loss that occur when primary seals age
Bypass Protection
Secondary seal ensures all water flows through the filter cartridge rather than around it
Chemical Resistance
NSF-certified elastomer maintains flexibility and seal integrity in chlorinated municipal water
Universal Fit
Compatible with all standard 10" and 20" Big Blue housings using dual O-ring architecture
Description
HE-H6813-2 Secondary O-Ring for Big Blue Filter Housings
The HE-H6813-2 is a precision-molded secondary O-ring that creates a watertight seal at the second seal point in Big Blue filter housings, working alongside the primary O-ring to eliminate leaks and prevent untreated water bypass. Regular replacement of both sealing components maintains consistent system pressure and protects against the water damage and filtration failure that occurs when compression-set O-rings lose their sealing effectiveness.
| Part Number | HE-H6813-2 |
| Application | Secondary seal for Big Blue filter housings |
| Material | NSF-certified food-grade elastomer |
| Seal Position | Second seal point (backup/bypass prevention) |
| Chemical Resistance | Chlorine and chloramine resistant |
| Temperature Range | 40°F to 100°F operating range |
| Replacement Interval | Every filter change or annually minimum |
| Certification | NSF-certified for potable water contact |
Primary Seal Point
The primary O-ring creates the initial seal at the housing cap interface, bearing the majority of system pressure and establishing the first barrier against leakage in Big Blue housings from Pentek, Culligan, DuPont, and generic systems.
Backup Seal and Bypass Prevention
The HE-H6813-2 secondary O-ring establishes a second seal point, preventing any water that passes the primary seal from bypassing the filter cartridge and ensuring all flow travels through the filtration media rather than around it.
System Integrity Under Load
The dual O-ring design maintains consistent seal compression across varying flow rates and pressure conditions, preventing the micro-channels that develop when single-seal systems experience thermal expansion or pressure fluctuations in whole-house applications.
Long-Term Performance in Chlorinated Water
NSF-certified food-grade elastomer construction resists degradation from chlorine and chloramine exposure in municipal water systems, maintaining seal flexibility and compression memory across the 40°F to 100°F operating temperature range.
The HE-H6813-2 secondary O-ring fits all standard 10-inch and 20-inch Big Blue filter housings that use a dual O-ring sealing design, including Pentek Big Blue housings, Culligan whole-house filter systems, DuPont Universal housings, and most generic Big Blue-style housings found in residential and light commercial water treatment installations. This component is essential for multi-stage filtration configurations, sediment pre-filtration systems, carbon filtration setups, and any whole-house application where dual O-ring sealing architecture is specified to prevent bypass and maintain treatment effectiveness.
Leak Prevention
Dual-seal design eliminates the housing leaks and pressure loss that occur when primary seals age
Bypass Protection
Secondary seal ensures all water flows through the filter cartridge rather than around it
Chemical Resistance
NSF-certified elastomer maintains flexibility and seal integrity in chlorinated municipal water
Universal Fit
Compatible with all standard 10" and 20" Big Blue housings using dual O-ring architecture
