Patent ID: 6290237
Filing Date: 2001-09-18
Classification: F16L,Y10S

Abstract:
A flat ring packing to be placed between two parallel flanges (3, 4), comprising two packing layers (18, 19) made of packing material; and an intermediate metal ring (20) disposed between the two packing layers (18, 19), said intermediate ring having a common central longitudinal axis (5) and which has an inside surface, wherein each packing layer (18, 19) is fixed on the intermediate ring (20) substantially without radial and parallel play about the axis (5), said fixing being by means of a connection (21, 22), and wherein each connection (21, 22) comprises a recess (23) in the intermediate ring (20), said recess (23) being concentric to the axis (5) and has a locking surface (24), and a locking rib (25), which is formed on each packing layer (18, 19) and which engages the recess (23) and which has an opposite surface (26) resting on the locking surface (24), the recess (23) comprising a clearance (27) which is radial to said central longitudinal axis (5), said clearance being outside the locking rib (25) and oriented toward the inside of the intermediate ring (20).