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Multi-layered PTFE radial lip seal

A technology of PTFE and lip seals, which is applied in sealing, engine sealing, packaging, etc., can solve the problems of increasing the friction coefficient and the abrasion effect of radial lip seals

Active Publication Date: 2020-04-17
GARLOCK SEALING TECHNOLOGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, certain packings reduce wear but increase the coefficient of friction and the abrasive effect of radial lip seals on mating surfaces

Method used

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  • Multi-layered PTFE radial lip seal
  • Multi-layered PTFE radial lip seal
  • Multi-layered PTFE radial lip seal

Examples

Experimental program
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Embodiment Construction

[0024] In the following the examples are described more fully with reference to the accompanying drawings, of which the examples form a part, and in which are shown certain illustrative examples by way of illustration. These examples are disclosed in sufficient detail to enable those skilled in the art to practice the invention. Examples may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein. Therefore, the following detailed description should not be construed as limiting.

[0025] refer to Figure 4 , shows a multilayer radial lip seal 400 comprising a first layer 410 and a second layer 420 . Since lip seal 400 is configured such that first layer 410 contacts the surface to be sealed, first layer 410 may also be considered an outer layer of lip seal 400 . Since lip seal 400 is configured such that second layer 420 does not contact the surface to be sealed, second layer 420 may also be considered an inne...

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Abstract

A multi-layered lip seal comprising a dynamic layer optionally having a filler incorporated therein and a static layer optionally having a filler incorporated therein is described. The lip seal has anannular ring shape, wherein an inner diameter of the ring shape is curved in an axial direction so as to give the lip seal a J-shape when viewed from a cross-sectional perspective. Fillers that can be included in static layer include stiffening filler, reinforcement fillers, conductive fillers and / or abrasion resistance fillers. Fillers that can be included in the dynamic layer include wear resistance fillers. The use of specific fillers in specific layers of the multi-layered lip seal allows for certain segments of the lip seal to be imparted with the benefits of the filler without negatively impacting other segments of the lip seal.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 518,480, filed June 12, 2017, the entire contents of which are hereby incorporated by reference. technical field [0003] This application relates to multilayer lip seals, and more particularly to multilayer lip seals using specific fillers within specific layers in order to impart the benefits of the filler to certain components of the lip seal without negatively affecting the lip shape. other parts of the seal. Background technique [0004] Radial lip seals are commonly used to prevent fluids (eg, liquids and gases) from leaving a housing penetrated by a rotating shaft. figure 1 An exemplary prior art radial lip seal 100 is shown used in conjunction with a rotating shaft 110 . The radial lip seal 100 has a generally annular shape such that it surrounds an axis of rotation 110 . Such as figure 1 As shown, radial lip seal 100 includes a ...

Claims

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Application Information

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IPC IPC(8): F16J15/3208F16J15/3248
CPCF16J15/3228F16J15/3248F16J15/3204F16J15/3284F16J15/3208Y10S277/946F16J15/3252
Inventor T·斯科特·坦纳迈克尔·P·麦克纳利乔瑟夫·D·勇史蒂芬·皮托拉杰
Owner GARLOCK SEALING TECHNOLOGIES
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