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MATERIALS

* Trademark: Du Pont

Other Materials upon Inquiry

MATERIALS USED IN OUR PARTS

NATURAL RUBBER (NR): Has little resistance to mineral oils; thus, its use is limited to seals. Its best application is for parts subject to shocks, wear and compression, such as dampers, shock absorbers, spacers and shims.

BUNA S (SBR): A synthetic rubber developed to replace the natural rubber, with similar properties and applications, and being superior in some of them.

NITRILE RUBBER (NBR): constitutes the most important group of general-purpose Elastomers, and its application in sealants is the most used. It is especially appropriate for sealing systems that use fluids, mineral oils, or petroleum byproducts, as well as water, greases, and compressed air.

NEOPRENE (CR): Its main characteristic is the excellent resistance to weather aging. Its use in sealants is limited, and generally applied to cooling fluid or pneumatic system seals.

PROPYLENE (EPDM): Its low resistance to mineral oils, petroleum byproducts and solvents restricts its application to sealants. It shows a good tolerance to high temperatures, and adapts primarily to steam seals.

HYPALON (CSM): Its use as sealant is minor, it is surpassed by the properties of the Nitrile Rubber, nevertheless this material shows good resistance to acids (especially Sulfuric), and to heat as well, totally resistant to ozone.

VITON* (FPM): Its main characteristic is the resistance to heat and chemical products, associated with excellent mechanical properties, which make its sealants better than any other, when applied to the same working conditions.

CHEVRON: This denomination always characterizes the combination of rubber-impregnated fabric, for application in high-pressure seals, surpassing in this aspect the conventional rubber. It is normally used in sets or individual parts, aimed at seal mineral oils, soluble oil or greases.

NON-TOXIC RUBBER: Developed for the contact with food or pharmaceutical products, normally formulated from Nitrile Rubber or Neoprene, with a special chemical composition for this purpose, without impairing its characteristics.

SILICONE (SI): it is characterized by low mechanical resistance, and thus requires attention before being employed in dynamic sealing systems. Normally it is used in parts exposed to low and high temperatures, due to its wide flexibility range. It generally shows good resistance to mild acids, alkalis, and ozone.

POLYURETHANE (PU): The main quality of these elastomers is the exceptional mechanical resistance to tearing and abrasion (it surpasses all others). It is employed with excellent results in low and high-pressure systems. When improved with Molybdenum Bisulfate as an additive, its working characteristics improve significantly by the low friction factor and permanent lubrication of this alloy. It shows good resistance to petroleum byproducts, hydrocarbons, ozone, and weather. It should be used very carefully in water, ketone, and steam solutions, because it behaves unsatisfactorily in some of these applications..

NTI-ADHERENT RESIN (PTFE): It is one of the few Thermoplastics used in industrial seals. Its characteristics are: low friction factor, insensitivity to chemical attack, wide working temperature range. For its employment in sealants, its low mechanical resistance is compensated by special profile designs or Brass, Fiberglass, Nickel, Graphite and Carbon fillers or strengtheners. Valuable when applied to systems without lubrication and in abrasive media.

LEATHER: Normally employed in rough systems or systems with deficient lubrication, where the rubber does not reach the desired result. Limited to profiles due to the hard moldability and rigidity. Its main applications are the retention of greases, oils, water, soluble oils and water systems in general, abrasive environments and rough adjustments.


* Trademark: Du Pont