Patent ID: 7140171

Claim:
A gland packing material wherein said gland packing material is configured by a cord-like member ( 40 ) which is formed by stranding a strip-like base member ( 4 ), or winding a strip-like base member ( 4 ) about a longitudinal direction, or winding a strip-like base member ( 4 ) about a longitudinal direction and then stranding said base member, said base member ( 4 ) comprises: a sheet-like reinforcing member ( 20 ) configured by a fibrous material ( 2 ); and a strip-like expanded graphite ( 3 ), said reinforcing member ( 20 ) is disposed at least on one face of said strip-like expanded graphite ( 3 ), a portion of said reinforcing member ( 20 ) is placed outside said cord-like member ( 40 ), a remaining portion is involved in said cord-like member ( 40 ), a large number of openings ( 20 A) are formed in said reinforcing member ( 20 ), and said strip-like expanded graphite ( 3 ) faces said openings ( 20 A).