What Causes Rubber to Deteriorate?
8th December, 2024
Even the most durable rubbers, like Viton, will still fall prey to environmental and chemical forces that degrade them over time. In this article, we’ll explain why.
Common causes of rubber deterioration
Extreme temperatures:
Heat can be particularly damaging to rubber, causing it to soften, crack, or even melt. Conversely, very low temperatures make the rubber much stiffer and thus more susceptible to cracking under stress. Viton rubber is chemically engineered to bear high heat, so it resists extreme heat that would make many other rubbers melt. However, extreme fluctuations in temperature or extended periods of excessive heat can eventually break down its structure over time.
Chemical exposure:
Chemicals like oils, solvents, and acids can break down the molecular bonds in rubber, causing it to weaken and degrade. Viton rubber offers better resistance against a wide variety of chemicals, especially in industrial applications.
Mechanical stress and abrasion:
Mechanical stress in forms of bends, stretches, or impacts can cause the rubber to crack, split, or wear down. Abrasive conditions such as friction or contact with an abrasive surface can consume the rubber.
Preventing rubber degradation
Temperature condition monitoring:
The best way to avoid temperature damage is to keep products made of rubber within their recommended temperature limits. For high-temperature applications, Viton rubber is usually a good choice, but frequent examinations of high-temperature rubber parts will help detect the early signs of deterioration. Conversely, in very low-temperature environments, it is possible to minimise cracking by allowing the rubber to gradually acclimate to the sudden change in temperature.
Avoid harsh chemicals or go for chemical-resistant rubber:
In applications where the oils, fuels, or acids are in constant contact, choosing a rubber material for specific chemical resistance is crucial. Cleaning of the items with mild solutions and keeping them away from long exposure to chemicals will add a few more years to the life cycle of rubbers.
Minimise physical stress and friction:
Easy periodic checks for wear will help in preventing splitting or cracking. Certain applications involving high stress lend themselves better to Viton as it’s constructed for use under heavy physical conditions. Maintenance of lubrication in frictional elements reduces abrasion and friction.
Consider coatings and protectants:
Specialised coatings such as silicone-based sprays or waxes may form a barrier at the surface of rubber articles that could protect it from environmental exposure and mechanical abrasion. The additional layer of protection shields dirt, moisture, and UV radiation from touching the rubber material directly, preserving materials like Viton for years.
At Aquaseal, we can provide and protect your rubber
If you’re looking for a highly durable and resistant rubber, we manufacture Viton rubber for a wide variety of needs. On top of this, our viton sealant is the perfect accompaniment to increase it’s lifespan further. Contact us to find out more.
