Federal-Mogul Corporation

Tenneco Gmbh

Steven Honkala

Takashi Okano

Joseph Henne

Hubert Koehler

A gasket assembly having a secondary elastic sealing bead positioned radially inwardly of the primary sealing bead. The secondary sealing bead extends circumferentially about the aperture and radially inwardly of the primary sealing bead. A stopper layer is disposed adjacent at least a portion of the gasket layer and extends radially from the outboard region to the inboard edge to radially overlap the secondary sealing bead and the primary sealing bead. The secondary sealing bead has an 'S-type' structure and provides increased gasket resiliency adjacent the inboard edge.

Elastic sealing member radially inwardly of primary sealing bead

A multilayer metal gasket () for establishing a seal between two mating members, such as between a cylinder head () and an engine block (). The gasket assembly () includes a primary functional layer () having an embossed primary sealing bead (). A primary stopper layer () bridges the convex embossed portion of the primary sealing bead and is fixed relative to the primary functional layer () by welding () or clinching. A secondary functional layer () is paired with the primary functional layer () and inverted relative thereto so that its secondary sealing bead () aligns with the primary sealing bead () and their respective concave depressions open toward one another, with the primary stopper layer () sandwiched therebetween. A compression limiter () may be carried on the functional layer () or alternatively a distance layer (). The assembly () may include a tertiary functional layer () having a tertiary sealing bead () inverted relative to, and aligned directly with, the primary sealing bead ().

Multilayer metal gasket with bead on stopper

A gasket assembly is provided including a first gasket layer and a second gasket layer having an outboard region and an inboard edge circumscribing an aperture. The gasket layers present a sealing bead between the inboard edge and the outboard region. A stopper layer disposed between the gasket layers is attached to the outboard region of the first gasket layer at an attachment joint and extends from the attachment joint to the inboard edge. A coating of sealing material is applied between the first gasket layer and the stopper layer. The coating extends from the attachment joint to the inboard edge of the first gasket layer to present a contact region immediately surrounding the aperture where the first gasket layer and the stopper layer are in direct continuous contact with the coating thereby preventing gas leakage and metal to metal contact between the first gasket layer and the stopper layer.

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Wolverine Lake, MI, United States of America

Steven Honkala