公开(公告)号：US09631726B2

公开(公告)日：2017-04-25

申请号：US14798724

申请日：2015-07-14

Applicant: Caterpillar Inc.

Inventor： Christian Earl Sabotta ,  Sarah Talbot Flanigan ,  Jay Hamilton Cline

IPC: F16J15/06 ,  F16J15/02 ,  G01K11/12 ,  G01L1/24

CPC classification number: F16J15/02 ,  F16J15/064 ,  F16J15/3296 ,  G01K11/12 ,  G01L1/24

Abstract: A sealing member for a machine may include an elastomeric body configured to fit at least partially into a recess defined in at least one of two sealing surfaces of two mating parts of the machine. The elastomeric body may include a visible indicator portion extending out from between the two mating parts. The elastomeric body may further include an elastomeric compound, and at least one of a thermochromic dye and a piezochromic dye mixed into the elastomeric compound, wherein the thermochromic dye is adapted to change color upon exposure of the elastomeric body to a temperature above a threshold temperature, and the piezochromic dye is adapted to change color upon exposure of the elastomeric body to a pressure above a threshold pressure.