Apparatus, system, and method for insulating an exhaust aftertreatment component

An exhaust aftertreatment component, comprising:

• an outer body;
• an inner body spaced apart from the outer body;
• a compartment defined between the outer and inner bodies;
• and
• an insulation pack positioned within the compartment, the insulation pack comprising insulation media encapsulated by a flexible fabric;
• wherein the outer body applies a compressive force to the insulation pack to compress the insulation pack against the inner body.

A method for making an exhaust aftertreatment component, comprising:

• providing a first body comprising a first inner surface defining a first interior cavity and a first outer surface;
• providing a second body comprising a second inner surface defining a second interior cavity and a second outer surface;
• positioning an insulation pack about the first body along the first outer surface, the insulation pack comprising insulation media enveloped by a fabric;
• inserting the first body into the second interior of the second body such that the insulation pack is positioned between the first outer surface and the second inner surface;
• and
• compressing the insulation pack with the second body as the first body is inserted into the second interior of the second body.

An insulation pack for insulating an exhaust aftertreatment component along an interior of the component, the component defining a central axis, the insulation pack comprising:

• an insulation media;
• and
• a flexible fabric encapsulating the insulation media;
• wherein the insulation pack is radially compressible and substantially axially incompressible.