Home Profile News Headings Products Materials Quality Contacts IT Headings O-rings and their uses What are O-rings? The O-rings (OR or toroidal rings) are perfectly circular rubber seals with a round section characterized by strict tolerances, both on the diameters and on the section. The o-ring is a means to prevent the passage of a fluid, liquid or gas and performs this function when it is inserted into the appropriate seat. The seal is generally ensured either by mechanical action alone, i.e. by pressing the o-ring into the seat or by mechanical action associated with the pressure that the fluid exerts on the ring itself. The ORs can be made in different materials: the main ones are NBR, FPM / FKM, HNBR, EPDM and VMQ Usi degli o-ring ed elementi che ne caratterizzano la tenuta Gli OR possono essere utilizzati come guarnizioni statiche, ossia con la funzione di tenuta tra due superfici fisse, oppure per tenute dinamiche tra due superfici, di cui una è in movimento rispetto all’altra. The efficiency of the seal is directly proportional to the width of the contact surface created between the O-ring and its seat. This contact surface increases with increasing pressure exerted on the ring: whether this derives from the mechanical locking action of the O-ring in the seat, or whether it derives from the action of the fluid with which the ring is in contact . Generally an attempt is made to exploit both to ensure that the contact surface is maximum. However, large contact surfaces are not required for low fluid pressures, sometimes a compression of the ring of 10% is sufficient to obtain an efficient degree of sealing. Another factor to pay attention to is the seat where the O-ring is housed. Directory list Rubber seals O-RINGS AND THEIR USES LIMITS OF USE OF O-RINGS AND WORKING TEMPERATURES WHAT ELEMENTS CHARACTERIZE THE QUALITY OF THE O-RINGS? ARGO di TM Fumagalli Srl VAT number: 00791180151 Via Monte Pordoi, 5 20021 Baranzate (MI) T. 02. 35.61.625 F. 02. 35.61.640 info@argotmf.com " General terms of supply " General conditions of Sale Privacy policy Eurobusiness web agency milan To offer you an optimized browsing experience in line with your preferences, this site uses cookies, including from third parties. By closing this banner you consent to their use in accordance with the Cookie Policy. I want to know more Close and agree