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Seal, screw connection having the seal, and use thereof

A technology for seals and bolts, applied in the field of seals, can solve problems such as difficult-to-clean gaps and protrusions, seals that are difficult to reach, pollution, etc., and achieve the effect of reducing the risk of assembly errors

Active Publication Date: 2014-08-06
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The aforementioned seals are not suitable for use in product-contact areas in the food or pharmaceutical industry, nor for use on equipment in the food or pharmaceutical sector, since the aforementioned seals have many difficult-to-reach and therefore difficult-to-clean surfaces. gaps and bumps
Impurities in these areas can lead to contamination, which is not acceptable / allowed in the food or pharmaceutical sector

Method used

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  • Seal, screw connection having the seal, and use thereof
  • Seal, screw connection having the seal, and use thereof
  • Seal, screw connection having the seal, and use thereof

Examples

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Embodiment Construction

[0023] exist Figures 1 to 3 An example of a bolted connection including a seal is shown in .

[0024] In the present embodiment, the fastener 1 is configured as a bolt with a flange 5 , for example manufactured according to DIN EN1665. Furthermore, the seal comprises a gasket 2 for the fastener 1 located axially between the flange 5 of the fastener 1 and the machine element 11 . The gasket 2 comprises a centrally arranged metal flat ring 12 , the outer peripheral side of which is surrounded by a sealing lip 3 made of a rubber-elastic sealing material, such as NBR or FKM.

[0025] The fastener 1 comprises, on the side axially facing the washer 2 , a flange 5 with a bottom face 6 . In this way, the fastener 1 and the flange 5 are integrally made of the same material in such a way that they blend into each other. When the seal is used as intended, the bottom surface 6 of the flange 5 and the top surface 7 of the gasket 2 are in contact with each other in a hermetic manner, as...

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Abstract

The invention relates to a seal of a fastening element (1), comprising the fastening element (1) and a washer (2) therefor, wherein the fastening element (1) and the washer (2) are arranged coaxially and axially adjacent to one another, wherein the washer (2) has a sealing bead (3) made of a rubber-elastic sealing material on the outer circumference, and wherein the sealing bead (3) contacts the underside (4) of the fastening element (1) in a sealing manner during the correct use of the seal. The fastening element (1) has a flange (5) on the side axially facing the washer (2), having an underside (6) axially facing the washer (2), wherein the washer (2) has a top side axially facing the flange (5), wherein the underside (6) of the flange (5) and the top side (7) of the washer (2) abut in a sealing manner during the correct use of the seal, wherein the underside (6) of the flange (5) and the top side (7) of the washer (2) are substantially congruent, and wherein the sealing bead (3) abuts the outer circumferential boundary (8) of the underside (6) of the flange (5) in a sealing manner.

Description

technical field [0001] The invention relates to a sealing part of a fastener, including a fastener and a gasket used for the fastener. The fastener and the washer are coaxial and axially adjacent. The gasket has a sealing lip made of rubber-elastic sealing material on the outer peripheral side. When the seal is used as intended, the sealing lip seal contacts the underside of the fastener. Background technique [0002] Seals of this type are generally known. The fasteners are designed, for example, as bolts, and the washers as so-called Usit rings. Uset rings are metal flat rings with trapezoidal sealing lips for sealing screwed and flanged connections. Uset rings are also self-sealing gaskets. [0003] Two different structures of Uset rings are known. In one configuration, the sealing lip is arranged on the inside, whereas in the other configuration, the sealing lip is arranged on the outside. [0004] When the fastener is tightened, the rubber-elastic sealing lip wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B43/00F16J15/12
CPCF16B43/001F16J15/127
Inventor 弗兰克·劳尔茱莉亚·爱克斯坦克里斯蒂安·米之凯尔托马斯·克瑞么
Owner CARL FREUDENBERG KG
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