Title:
GLAND PACKING
Document Type and Number:
Japanese Patent JP2015129532
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a gland packing that is improved to reduce friction and maintain good sealing performance while following a configuration comprising a combined material of expanded graphite and PTFE.SOLUTION: A gland packing A has a configuration in which an expanded graphite tape having a surface layer 2 comprising burned PTFE is spirally or concentrically wound up with the surface layer 2 located on the radial inner side. It is desirable that the surface layer 2 is formed only at a portion corresponding to an inner peripheral surface 1N of the innermost one circle, and the surface layer 2 may include graphite. The expanded graphite tape may be impregnated with a hydrocarbon system lubricant, and in this case, preferably, a weight ratio of the hydrocarbon system lubricant is set to be 3-5%.
Inventors:
KATAOKA KOICHI
FUJIWARA MASARU
FUJIWARA MASARU
Application Number:
JP2014000490A
Publication Date:
July 16, 2015
Filing Date:
January 06, 2014
Export Citation:
Assignee:
NIPPON PILLAR PACKING
International Classes:
F16J15/22; C01B31/04; F16J15/18
Domestic Patent References:
| JPH07165470A | 1995-06-27 | |||
| JPH0293171A | 1990-04-03 | |||
| JPS60260415A | 1985-12-23 | |||
| JP2006342932A | 2006-12-21 |
Attorney, Agent or Firm:
Shoji Suzue