Abstract: It is described a gasket for a valve of an internal combustion engine having a central axis and comprising: an elastically deformable sealing element having an annular shape with respect to the aforesaid axis and adapted to be externally arranged on the valve, and a support element, also having an annular shape with respect to the aforesaid axis, coaxially arranged on at least part of the sealing element so that this latter is radially pressed between the support element and the valve; the support element having, along its side wall, at least one through window to allow the evacuation of the heat generated in use during the operation of the valve.

Abstract: A seal assembly for sealing the compartment between a rotating member and a fixed element. The seal assembly comprises a first ring fixed to the rotating member, a second ring fixed to the fixed element, and a seal element. The seal element is carried by the second ring and is connected to said second ring by means of a fitted portion; the seal element comprises at least one annular pad having an annular seal edge. The annular seal edge projects towards a coupling portion of the first ring and is adapted to cooperate with the coupling portion along a substantially linear area of contact. The seal element further comprises a spring portion adapted to exert an elastic force on the annular pad so as to push the annular seal edge towards the coupling portion.

Abstract: It is described a gasket for a valve of an internal combustion engine, having an axis and comprising an annular sealing element to be externally arranged on the valve and an annular support element, coaxially arranged on the sealing element to press it radially on the valve; the support element comprising a first annular component, internally cooperating with the sealing element, a second annular component, coaxially surrounding the first component, and snap coupling means between these components; the second component comprising an annular main body and an outer annular end flange; the main body further having an annular edge projecting towards the axis and defining an axial abutment for the first component; the snap coupling means comprising two or more hooking projections angularly equidistant about the axis, cantileverly extending from the annular edge towards the flange and cooperating in contact with the first component to abuttingly keep it against the annular edge.

Abstract: There is described a gasket for a valve of an internal combustion engine; this gasket has a central axis and comprises: an elastically deformable annular seal element; a support member made of plastic material, also annular and having at least a retention portion coupled coaxially on a first portion of the seal element to press it on a guide element of the valve; and elastic means acting on a second portion of the seal element to press it on a stem of the valve; the elastic means comprise a thrust portion of the support member made in one single piece with the retention portion; the seal element is formed by means of an injection molding operation in a molding chamber containing the support member.

Abstract: A gasket for sealing a compartment between rotating and fixed members. The gasket has a first ring; a second ring radially more external than the first ring; a first annular elastomeric element carried by the first ring and defining at least a first annular sealing lip cooperating with the second ring to counter the passage of external contaminants inside the compartment; a second annular elastomeric element carried by the second ring and defining at least a second annular sealing lip cooperating with the first ring to counter the passage of lubricant to the outside; a third ring coupled to the second ring and extending from this latter towards the axis of the gasket; and at least a third annular sealing lip, overhangingly projecting from the first elastomeric element and cooperating with the third ring to counter the passage of external contaminants from the outside towards the first sealing lip.

Abstract: A gasket for a valve of an internal combustion engine is described. The valve has a guide element defining a through seat, and a stem movable in a sliding manner in said seat. The gasket has a central axis and comprises: an elastically deformable sealing element, having an annular configuration with respect to the axis and suitable to be arranged externally on the valve to cooperate both with the guide element and with the stem; a supporting member having an annular configuration, arranged coaxially on at least part of the sealing element so that the latter is pressed radially between the supporting member and the valve; an end flange projecting radially outwards from the supporting member and configured to receive the elastic load of a coil spring of the valve; and protruding means distinct from the flange, projecting outwards from the supporting member and suitable to cooperate with the spring of the valve to maintain it coaxial with the axis.

Abstract: A gasket for sealing a compartment between a fixed and a roto-translatory member. The gasket has a metal support ring adapted to be connected to the fixed member; first sealing means in a position adjacent to a first ambient containing lubricant and defining two first annular sealing lips axially spaced to cooperate with the roto-translatory member and to counter the passage of lubricant/external contaminants between the first ambient and a second ambient connected with the outside; and second sealing means axially interposed between the first sealing means and the second ambient and defining a second sealing lip axially spaced from the first annular sealing lips and adapted to cooperate with the roto-translatory member to counter the passage of external contaminants towards the first sealing lips; the first sealing means comprise two first distinct sealing rings, axially arranged side by side and respectively carrying a relative first sealing lip.

Abstract: A gasket for sealing a compartment between rotating and fixed members. The gasket has a first ring adapted to be connected to a rotating member; a second ring adapted to be connected to a fixed member; a first annular elastomeric element carried by the first ring and defining at least a first annular sealing lip cooperating with the second ring to counter the passage of external contaminants inside the compartment; a second annular elastomeric element carried by the second ring and defining at least a second annular sealing lip cooperating with the first ring to counter the passage of lubricant to the outside; and an annular wiper member connected to the first elastomeric element and having a wiping portion cooperating with the second fixing portion of the second support ring to counter the passage of external contaminants from the second ambient to the first sealing lip.

Abstract: There is described a gasket for a valve of an internal combustion engine; the valve comprises a guide element defining a through seat, and a stem slidably moving in such a seat; the gasket comprises an elastically deformable seal element, having an annular configuration with respect to an axis and adapted to be fitted externally on said valve to cooperate with the stem and/or with the guide element; and a support member having an annular shape, fitted coaxially on at least part of the seal element; the support member is formed by a single component made entirely of plastic material.

Abstract: Described herein is a gasket for a valve of an internal-combustion engine; the valve comprises at guide element defining a through seat, find a stein slidably mobile in said seat; the gasket comprises an annular sealing element, which is elastically deformable and is designed to be set externally on the valve to co-operate both with the guide element and with the stem, and an annular supporting member, which is set coaxially on at least part of the sealing element in such a way that the latter is radially pressed between the supporting member and the valve; the supporting member comprises a first portion for interaction with the sealing element and a second portion for positioning in use the gasket on the engine; the first and second portions of the supporting member form part of a first component and a second component respectively, that are distinct from one another and are mounted coaxially by snap-action coupling means.