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    Vezzaro Augusto Guarnizioni has always keen to achieve the highest quality levels for its washers and gaskets.

    Procedures in use for years, special attention in manufacturing equipment maintenance, modern quality control instrumentation allow us to implement and measure the quality of our products, raising the quality target continuously.

    Even for that reason, important manufacturers in automotive field have honoured us by their partnership for many years as a supplier of components for original equipment as well as for aftermarket.

    Our rigorous control procedures assure high quality of our products and results into cost savings for our Customers because they do not have to carry out quality inspections at their end.

    From 1998, Vezzaro Augusto Guarnizioni is certified DNV-GL.

    CERTIFICATIONS ISO 9001

    OUR LABORATORY

    Vezzaro Augusto Guarnizioni has a qualified internal laboratory for the execution of hardness tests,
    dimensional and roughness measurements. The instrumentation is periodically calibrated with reference
    to primary samples by qualified personnel.

    HARDNESS

    Hardness tester with a monitor to measure the indentation diagonal length and carry out the Vickers hardness value on raw material as well as on finished product.

    DIMENSIONS

    Dimension measuring instruments like vernier callipers, micrometers (internal and external), calibrated dowel pins, ceramic rings and a profile projector.

    ROUGHNESS

    To be able to satisfy special requirements of some of our Customers, we invested in a Hommel Tester in order to measure surface roughness of raw material and, when possible, finished products.

    INTERNATIONAL STANDARDS

    International standards about sealing ring and gaskets are:

    INTERNATIONAL STANDARD

    DESCRIPTIONS
    DIN 7603

    Ring seal and gaskets

    UNI 6602

    Reference for the standard supply conditions

    In the table below raw material international standards are listes:

    MATERIAL DESCRIPTION INTERNATIONAL STANDARD
    COPPER

    Cu 99,9%

    UNI EN 1652

    BRASS

    CuZn37 (CW508L)

    UNI EN 1652

    BRONZE

    CuSn6 (CW452K )

    UNI EN 1652

    ALUMINIUM

    EN AW-1050A (EN AW-Al 99,5)

    UNI EN 573-3

    STEEL

    DC01, DC04

    UNI EN 10130

    UNI EN 10139

    STAINLESS STEEL

    1.4310 - X10CrNi18-8

    1.4301- X5CrNi18-10

    AISI 304, 301, 316L

    EN 10088-2

    International standards listed above are to be considered significant in terms of chemical composition.
    Mechanical characteristics could change as a result of our production process and can differ considerably from those of the semifinished product.

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