The term 'cold flow' is generally associated with

The term 'cold flow' is generally associated with

• A. The effects of low temperature gases or liquids flowing in hose or tubing
• B. Impressions left in rubber hose material
• C. Flexibility characteristics of hose materials at low ambient temperatures
• D. Impressions left in natural or synthetic rubber hose material

Answer: (D)

Cold flow is the slow, time-dependent deformation of elastomeric materials under sustained stress at normal temperatures. In rubber hoses—especially natural or synthetic rubber—the material can creep under internal pressure or long-term storage, producing visible impressions on the hose surface. This surface imprinting is the hallmark of cold flow. It’s not about the contents moving through the hose, nor about low-temperature flexibility; it specifically describes the material’s tendency to deform and leave impressions.

Cold flow is the slow, time-dependent deformation of elastomeric materials under sustained stress at normal temperatures. In rubber hoses—especially natural or synthetic rubber—the material can creep under internal pressure or long-term storage, producing visible impressions on the hose surface. This surface imprinting is the hallmark of cold flow. It’s not about the contents moving through the hose, nor about low-temperature flexibility; it specifically describes the material’s tendency to deform and leave impressions.