Material care is just as important as the manufacturing process. RO-RA TECH’s warehouse for raw materials is fully conditioned and monitored by a sophisticated electronic system.
Special materials for extreme uses or with high performances guarantee better results over time, despite their costs. As a company who values real quality products, RO-RA TECH has the capacity and the structure to mould parts with special characteristics, in particular for extreme uses, using special materials such as Fluorosilicon, FPM, FKM and HNBR.
FVMQ
Flourosilicone (FVMQ) has a high permanent deformation resistance with very good elasticity. It has great properties such as electrical insulation, dyeability and it is colourless originally and flavourless.
The working temperature varies between -55°C and +200°C. Its performance is good with oils, hydrocarbons and weather elements. It is satisfactory with alcohol, glycols and solvents but it is not suitable for strong acid or basic substances of mineral origin.
FKM
Fluoroelastomer (FKM) has an exceptional permanent deformation resistance, as well as a good tear and abrasion resistance. It is self-extinguishing thus particularly resistant to fire and gives a high gas-proof resistance.
FKM is suitable for hydraulic systems such as suction pumps and liquid transportation systems. The working temperature varies from -28°C to +275°C (GLT up to -40°C). It has a good resistance to fats and oils, hydrochloric acids, sulphuric acids, saline and non-saline solutions. Its performance is satisfactory with Freon and steams up to 140°C. However, it is not suitable for applications based on nitric acid, acetic acid and alkaline substances with medium-high concentration.
HNBR
Hydrogenated Nitrile Butadiene Rubber (HNBR) has excellent mechanical properties, a good wear, deformation and ozone resistance, with a good gas-proof feature.
It is particularly used in the automotive and chemical industries as gaskets, frames and membranes that come into contact with oils, hydrocarbons and other chemical substances.
The working temperature varies from -35°C to +160°C (not suitable over 140°C ). It has more than satisfactory performance with regards to resistance to oils and fats, hydrocarbons, saline solutions and fuels. It is satisfactory with Freon, diluted acid solutions and concentrated alkaline solutions. It is not suitable for mineral acids and hot alkaline liquids.
FPM
This fluoro rubber has a great resistance to ageing and to weather elements. It has also a satisfactory resistance to heat. The working temperature varies from -20°C to +200°C. This material has an excellent resistance to oils and fats of mineral origin and to hydrocarbons. The use of Freon and halogen hydrocarbons is not recommended.
ACM
Alkyl Acrylate Copolymer (ACM) has an excellent resistance to permanent deformation at high temperatures with fair mechanical properties. It gives excellent gas-proof and UV rays resistance.
It is used for O-rings and gaskets manufacturing and for systems requiring thermal resistance for oils. The working temperature varies from -35°C to +180°C. It has an excellent resistance to mineral such as animal oils and fats. It is satisfactory with saline solutions and phosphoric esters. It is not suitable for uses with acid or basic solutions, esters and alcohols.
AEM
Ethylene Acrylic Rubber (AEM) has a good resistance to permanent deformation, at high temperatures too, and offers an excellent gas-proof feature. The working temperature varies from -30°C to +170°C. This material has an excellent resistance to oils, gases, weather elements, acids and organic bases. It is not suitable for contact with water or other liquids for braking systems.
EPDM
Elastomer made of Ethylene-Propylene Diene (EPDM) is used for gaskets or membranes and has a good resistance to heat, wear and many chemical agents. This material has excellent insulation properties: insulation from water and steam up to +150°C for long-lasting use. It has good resistance to abrasion and oxidation. Excellent resistance to UV. The working temperature varies from -35°C to +150°C. EPDM has an excellent resistance to water, steam and saline or oxidant solutions, and is satisfactory with strong mineral acids, oils and animal or vegetable fats. It is not satisfactory for non-polar liquids.
CR
Polychloroprene (CR) has a fair resistance to oils and a good resistance to tear, abrasion and combustion. It has a good resistance performance to ozone, sea water and ageing. The working temperature is between -40°C and +110°C
NBR
Acrylonitrile Butadiene Styrene Copolymer (NBR) has a great resistance to vegetable oils, heat and ageing. It has good mechanical features with low permanent deformation and low gas permeability. The working temperature varies from -40°C to +130°C.
VMQ SILICON
Polydimethylsiloxane (VMQ) has a great resistance to extreme temperatures, both high and low. It is suitable for non-conductive or highly conductive materials. Thanks to its non-toxic nature, it is suitable for food and beverages applications. Its working temperature varies from -40°C to + 200°C.
