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From a materials science perspective, the degradation of EPDM rubber roller coatings is an inevitable natural process. Industrial field experience shows that over 80% of EPDM rubber roller failures are not sudden events but the result of long-term aging and cumulative wear.

In fact, the differences between NBR and EPDM rubber rollers go far beyond surface-level specifications. They differ significantly across multiple dimensions, including molecular structure, chemical stability, resistance to media, hardness retention, compression set, and service life.

The typical coating thickness range for EPDM rubber rolls is 3mm to 25mm. While most industrial applications can find a suitable thickness within this range, this does not mean a single, uniform value applies to all rolls.

Even after prolonged contact with water, the surface of an EPDM rubber roller will not exhibit significant swelling, softening, or deformation. The reason for this lies in the fact that EPDM (Ethylene Propylene Diene Monomer) rubber possesses exceptional resistance to both water and steam.

It's important to emphasize that repair is not always equivalent to a "completely new roller." The performance of a repaired EPDM rubber roller may indeed be limited when: • Structural damage to the metal core • Insufficient dimensional allowance due to repeated repairs • Original design parameters no longer suitable for current operating conditions

The stable operating temperature of EPDM in air environments is typically: • Continuous operating temperature: 120°C～150°C • Short-term withstand temperature: 150°C～180°C This means that EPDM rubber rollers are perfectly capable of handling printing, conveying, heat treatment, and drying systems.

EPDM rubber rollers do not absorb water; their inherent properties determine their excellent water and steam resistance. EPDM (ethylene propylene diene monomer rubber) is composed of ethylene, propylene, and a small amount of a third monomer, and its molecular chain has a saturated structure.

One of the biggest "no-go zones" for EPDM rubber rollers is oily media environments. This includes: • Mineral oil • Lubricating oil • Hydraulic oil • Animal and vegetable oils • Oil-containing emulsions

EPDM rubber rollers can be both hard and soft, with a very wide hardness range, generally between Shore A 40°–95°. In other words: • Soft EPDM rubber rollers: 40°–60° A • Medium-hardness EPDM rubber rollers: 60°–75° A • High-hardness EPDM rubber rollers: 75°–95° A

EPDM rubber roller coatings can absolutely be refurbished, and the refurbishment results are excellent. It is one of the most economical and effective methods for maintaining EPDM rubber rollers.

EPDM industrial rollers belong to the rubber category, not the plastic category. EPDM is a typical synthetic rubber, composed of ethylene, propylene, and a small amount of a third monomer.

EPDM can withstand these conditions because its skeleton has a highly saturated structure, making it less prone to thermo-oxidative reactions, thus ensuring the physical stability of EPDM rubber rollers in steam environments.