Technically known as ozone cracking or thermo-oxidative degradation , dry rot isn't actually rot (which requires moisture and fungus). It is the chemical breakdown of rubber polymers. When rubber loses its plasticizers and oils, it becomes brittle, shrinks, and cracks.
Never use WD-40, motor oil, or petroleum jelly on rubber. Petroleum products dissolve the chemical bonds of natural and synthetic rubber, causing it to swell, soften, and decompose. Control the Storage Environment
Workplace dust, grime, and chemical residues can accelerate degradation.
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Wash away dirt, dust, and grease using a pH-neutral dish soap diluted in warm water.
: If you see small, shallow cracks (less than 1/32 of an inch in width on tires), the rubber is failing. While a rejuvenator may temporarily soften the surface, the structural integrity is compromised. Such items should be replaced for any safety-critical use (e.g., on a car or a bicycle). They might still be okay for a non-stressed part like a storage bin lid.
Allow rubber to air-dry completely in the shade before storing it away. 3. Apply Professional Rubber Conditioners Never use WD-40, motor oil, or petroleum jelly on rubber
A quick inspection every few months—checking for that telltale white or brown "checking" (cracking)—is all it takes to catch a problem before it becomes dangerous. Remember, a little prevention today saves you from a costly, and potentially dangerous, replacement tomorrow.
If you see visible splits or deep cracks, especially when the rubber is flexed, the component has failed and must be replaced immediately. Choosing the Right Rubber for Your Workplace
What are you trying to protect (boots, tires, or seals)? This public link is valid for 7 days
Apply a high-quality, water-based silicone or polymer conditioner to seals, gaskets, and hoses. This creates a barrier against oxygen and UV rays.
Avoid sealing damp rubber gear inside airtight plastic bags, which traps moisture and invites mold growth. Use breathable canvas bags or bins with ventilation holes. Maintain Shape and Structural Integrity
What are you trying to protect? (e.g., boots, conveyor belts, vehicle tires)