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Fleck (13305) O-Ring, Adapter Coupling - 1-1/8" OD x 15/16" ID x 3/32" Width

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Fleck (13305) O-Ring, Adapter Coupling - 1-1/8" OD x 15/16" ID x 3/32" Width

The Fleck 13305 O-Ring is a precision-molded adapter coupling seal designed for Fleck 5600 control valves, measuring 1-1/8" OD x 15/16" ID x 3/32" width. This nitrile rubber component creates a watertight seal between adapter couplings and valve bodies in residential and light commercial water softener systems.
TECHNICAL DETAILS
Fleck 13305 O-Ring Specifications
Manufacturer Part Number 13305
Outer Diameter (OD) 1-1/8 inch
Inner Diameter (ID) 15/16 inch
Width (Cross Section) 3/32 inch
Material Nitrile Rubber (Buna-N)
Standard Designation AS568-118
Equivalent Part Danco #62 O-Ring
COMPATIBILITY & APPLICATIONS
Compatible Systems

This o-ring is factory-specified for Fleck 5600 control valve adapter couplings and is compatible with all 5600 series water softener configurations. It seals the connection point where bypass valves, manifolds, or distribution blocks attach to the main valve body. The AS568-118 standard size ensures compatibility with aftermarket adapter assemblies, and the Danco #62 equivalency allows for cross-reference ordering from multiple suppliers. Suitable for continuous contact with potable water, brine solutions, and standard regenerant chemicals used in ion exchange softening.

💧 Keep a spare 13305 o-ring on hand during valve service or adapter replacement — these seals are often stretched or nicked during disassembly and should be replaced rather than reused to prevent slow leaks at threaded connections.
The Fleck 13305 O-Ring is a precision-molded adapter coupling seal designed for Fleck 5600 control valves, measuring 1-1/8" OD x 15/16" ID x 3/32" width. This nitrile rubber component creates a watertight seal between adapter couplings and valve bodies in residential and light commercial water softener systems.
TECHNICAL DETAILS
Fleck 13305 O-Ring Specifications
Manufacturer Part Number 13305
Outer Diameter (OD) 1-1/8 inch
Inner Diameter (ID) 15/16 inch
Width (Cross Section) 3/32 inch
Material Nitrile Rubber (Buna-N)
Standard Designation AS568-118
Equivalent Part Danco #62 O-Ring
COMPATIBILITY & APPLICATIONS
Compatible Systems

This o-ring is factory-specified for Fleck 5600 control valve adapter couplings and is compatible with all 5600 series water softener configurations. It seals the connection point where bypass valves, manifolds, or distribution blocks attach to the main valve body. The AS568-118 standard size ensures compatibility with aftermarket adapter assemblies, and the Danco #62 equivalency allows for cross-reference ordering from multiple suppliers. Suitable for continuous contact with potable water, brine solutions, and standard regenerant chemicals used in ion exchange softening.

💧 Keep a spare 13305 o-ring on hand during valve service or adapter replacement — these seals are often stretched or nicked during disassembly and should be replaced rather than reused to prevent slow leaks at threaded connections.
$1.43
Fleck (13305) O-Ring, Adapter Coupling - 1-1/8" OD x 15/16" ID x 3/32" Width—
$1.43

Description

The Fleck 13305 O-Ring is a precision-molded adapter coupling seal designed for Fleck 5600 control valves, measuring 1-1/8" OD x 15/16" ID x 3/32" width. This nitrile rubber component creates a watertight seal between adapter couplings and valve bodies in residential and light commercial water softener systems.
TECHNICAL DETAILS
Fleck 13305 O-Ring Specifications
Manufacturer Part Number 13305
Outer Diameter (OD) 1-1/8 inch
Inner Diameter (ID) 15/16 inch
Width (Cross Section) 3/32 inch
Material Nitrile Rubber (Buna-N)
Standard Designation AS568-118
Equivalent Part Danco #62 O-Ring
COMPATIBILITY & APPLICATIONS
Compatible Systems

This o-ring is factory-specified for Fleck 5600 control valve adapter couplings and is compatible with all 5600 series water softener configurations. It seals the connection point where bypass valves, manifolds, or distribution blocks attach to the main valve body. The AS568-118 standard size ensures compatibility with aftermarket adapter assemblies, and the Danco #62 equivalency allows for cross-reference ordering from multiple suppliers. Suitable for continuous contact with potable water, brine solutions, and standard regenerant chemicals used in ion exchange softening.

💧 Keep a spare 13305 o-ring on hand during valve service or adapter replacement — these seals are often stretched or nicked during disassembly and should be replaced rather than reused to prevent slow leaks at threaded connections.
Fleck (13305) O-Ring, Adapter Coupling - 1-1/8" OD x 15/16" ID x 3/32" Width | Isopure Water