Fødevarer og medicin Materialer 

Industry specific compounds meet application requirements

Ethylene Propylene Diene Rubber (EPDM) polymers are fully saturated, unpolar hydrocarbon-based elastomers. Their polymer geometry gives them superior compatibility with polar fluids even at elevated temperatures.

The materials demonstrate:

• High chemical resistance
• Long life in polar solvents, hot water and steam
• Suitability with alkaline and acidic cleaners
• Excellent choice in most dairy applications, except for products with high fat content 

Products:

O-Ring, Kantseal square rings, FlatSealTM, Gaskets, Diaphragms, also reinforced. EPDM can also be bonded to other materials and delivered as engineered parts in almost any design.

Applications:

Used in almost all types of applications as a universal material, suitable both in cleaning and sterilization processes (CIP/ SIP).

Typical applications are filling, dispensing, pumps, pipe and flange gaskets, valves, quick connectors, tanks, separators, homogenizers, decanters and heat exchangers.

Trelleborg Sealing Solutions has optimized the performance of our Fluoroelastomer (FKM) material range, to meet the specific criteria of the processing industry.

FKM materials demonstrate:

• Good elevated temperature characteristics
• Very good suitability for use in contact with vegetable oil and fat, animal fat and high fat dairy products
• Good compatibility with most CIP media and SIP conditions and lubricants
• Good resistance against ozone and aging

Isolast® Perfluoroelastomer (FFKM) materials are terpolymers of monomers in which all hydrogen atoms have been replaced by fluorine. The absence of hydrogen in the molecular chain dramatically increases both their chemical and thermal resistance. The cross-linked molecular chains enable them to combine the resilience and sealing force of an elastomer with the chemical inertness and thermal stability of PTFE.

Unrivalled operating characteristics

Isolast® is the Trelleborg Sealing Solutions range of high specification perfluoroelastomer compounds. It offers the widest portfolio on the market engineered to meet specific processing demands. Virtually inert, the materials perform well in a broad range of chemicals including acids, alkalis, amines, esters and steam at continuous operating temperatures from -25°C to +325°C / -13°F to +617°F.

Improving production efficiency

Isolast® is proven to have better operating characteristics than other elastomer types. The two grades J9515 and J9516 have been developed to meet the most stringent standards and are ideal for sealing in aggressive cleaning fluids. They help reduce downtime and improve production efficiency by extending seal life.

Applications:

Isolast® provides the ultimate solution for elastomer sealing in aggressive chemicals and at extreme temperatures. It is recommended for applications where EPDM or FKM materials are used but additionally extremely aggressive media are present.

Application examples include quick couplings, safety valves and retractable tank spray systems.

Products:

Isolast® can be manufactured in a variety of standard and custom designs. In addition, we have developed many innovative cost-effective solutions that minimize FFKM content.

Silicone materials are ideal for use in food and beverage production due to their inherent inertness to growth of bacteria, mold and fungi.

Advantages of silicone:

• Excellent heat resistance, cold flexibility and dielectric properties
• Preferred choice in applications exposed to ozone and oxygen 
• Operating temperature from -60°C to +200°C / -76°F to +392°F
• Exceptionally low surface energy, seals will not adhere to counterparts.
• Low long-term compression set
• Suitable for use with hot water, fat and oil, some lubricants and glycerin.

A possible limitation of silicone is that chemical degradation can occur in contact with acids, alkalis, ketones, esters and steam above 100°C / 212°F.

Turcon® is the Trelleborg Sealing Solutions brand of proprietary Polytetrafluoroethylene (PTFE) based compounds.

Turcon® offers:

• Excellent friction and self-lubricating characteristics
• Suitability for dynamic and rotating applications, including those with abrasive media and countersurfaces
• Outstanding performance in low and high temperature environments
• Compatibility with almost all chemicals

Turcon® FoodPro® MF designed for processing needs

Turcon® FoodPro® MF1, MF2, MF3 and MF6 have been formulated to meet special requirements of the food and beverage processing industries. Based on ultra-clean technology, these compounds are manufactured from high-purity PTFE grades and additives. Their smooth finish, with high gloss and low porosity, avoids the risk of contamination buildup and reduces particle shedding.

Turcon® FoodPro® compounds are particularly suitable for use in CIP and SIP processes due to its high operating temperatures and media resistance.

Applications:

• Multipurpose equipment with mixed process streams, where seals are exposed to extremely aggressive cleaning solvents 
• Filling machines: Turcon® Variseal® eliminates contamination 
• Coffee machines: high abrasion resistance and low friction 

Zurcon® is the brand name for the Trelleborg Sealing Solutions range of engineered plastic based materials, including PEEK and UHMWPE.

Zurcon® FoodPro® Z81

Zurcon® FoodPro® is ideal for reciprocating, very slow rotating and oscillating applications, where high wear resistance is required, including applications with abrasive media and countersurfaces. The material is ideal for a variety of food processing applications, such as filling machines, valves, pumps, mixers, separators, homogenizers, centrifuges, dosage cylinders, and sensors.