Rubber molding of custom industrial parts

Perfecting Performance by EXSTO


EXSTO Italia disposes of a wide selection of FKM ( Viton ) compounds, which can be used for compression and injection moulding, to manufacture extremely different components.

According to the client’s drawing, we can manufacture articles from 0.50 grams to several kilos, in a range of colours (black, green, white, brown, red) and with hardness between 50 and 90 Sh°A.

EXSTO has Copolymers and Terpolymers that meet the specifications of Fiat, ASTM, DBL, etc..
We have polymers with high resistance to unleaded petrol and to low temperatures (up to -40°C).

Among the most common applications of FKM:

Seals for compressors; Gaskets for engine cylinder heads;
Diaphragms in FKM-coated fabric for safety valves; Diaphragms for diesels and petrol;
Bellows in FKM ; Washers, rings cut from moulded tubes;
Seals, test gauges, subframes; O-Rings in FKM / Viton ®
Lip seals; Seals and articles for dry cleaning machines;
Sealing pads, also with FKM vulcanized on metal; Stoppers for chemical products and harsh substance;
Valve casings; Valve seals in FKM.

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    FKM / Viton compounds are the best solutions for several industrial applications, because of its technical features:
    • outstanding tolerance to high temperatures;
    • resistance to aggressive substances (oils, solvents, reagents, petrol, etc..);
    • extraordinary endurance to strains.

    EXSTO Italia, in particular, can supply special compounds for the following applications:
    • the automotive sector (cylinder heads of engines working with unleaded petrol or diesel fuel, laminated suction units, pipe manifolds);
    • chemical transformation systems;
    • domestic and industrial gas supply systems;
    • the aerospace sector