Repair clamp gasket

A gasket comprising:

• a flexible sheet having a first side, a second side, a first edge and a second edge;
• said first side of said flexible sheet comprising:
• a primary contact surface;
• at least a first circumferential seal bead protruding from said primary contact surface and having a transverse seal length between said first edge and said second edge;
• and
• a standalone header bead protruding from said primary contact surface and having a transverse header length between said first edge and said second edge that is substantially less than said transverse seal length of said first circumferential seal bead;
• said flexible sheet comprising a recess on said second side of said flexible sheet configured to receive at least a portion of a spanner;
• said recess having a width between said first edge and said second edge;
• and
• wherein said transverse header length of said standalone header bead is less than or equal to one hundred twenty five percent (125%) of said width of said recess.

A gasket comprising:

• a flexible sheet having a first side, a second side, a first edge and a second edge;
• said first side of said flexible sheet comprising:
• a primary contact surface;
• at least a first circumferential seal bead protruding from said primary contact surface and having a transverse seal length between said first edge and said second edge;
• and
• a standalone header bead protruding from said primary contact surface and having a transverse header length between said first edge and said second edge that is substantially less than said transverse seal length of said first circumferential seal bead;
• and
• said standalone header bead comprising a first feathered end portion and a second feathered end portion, each of which is sloped down to said primary contact surface.

A gasket comprising:

• a flexible sheet having a first side, a second side, a first edge and a second edge;
• said first side of said flexible sheet comprising:
• a primary contact surface;
• at least a first circumferential seal bead protruding from said primary contact surface and having a transverse seal length between said first edge and said second edge;
• and
• a standalone header bead protruding from said primary contact surface and having a transverse header length between said first edge and said second edge that is substantially less than said transverse seal length of said first circumferential seal bead;
• and
• said flexible sheet of said gasket comprising an array of depressions in said inner primary contact surface on said inner side of said gasket;
• said first circumferential seal bead comprising a first protruding portion having a first length over said array of depressions between said first edge and said second edge and a first thickness above said primary contact surface;
• said first circumferential seal bead comprising a second protruding portion having a second length over said array of depressions between said first edge and said second edge and a second thickness above said primary contact surface;
• wherein said second thickness of said second protruding portion of said first circumferential seal bead is greater than said first thickness of said first protruding portion of said first circumferential seal bead;
• wherein said length of said second protruding portion of said first circumferential seal bead is substantially less than said length of said first protruding portion of said first circumferential seal bead;
• and
• wherein said standalone header bead has a third thickness above said primary contact surface and said second thickness of said second protruding portion of said first circumferential seal bead is substantially the same as said third thickness of said standalone header bead.