Encapsulated back-up system for use with seal system

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a first metallic ring including a first series of petals;
• a second metallic ring including a second series of petals, the second metallic ring attached to the first metallic ring such that the outer diameter of the second metallic ring abuts the inner diameter of the first metallic ring and the second series of petals are offset from the first series petals;
• and
• a non-metallic material encapsulating the first metallic ring and the second metallic ring.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a first metallic ring including a first series of longitudinal slots;
• providing a second metallic ring including a second series of longitudinal slots,
• placing the second metallic ring within the first metallic ring such that the outer diameter of the second metallic ring abuts the inner diameter of the first metallic ring;
• arranging the second metallic ring within the first metallic ring such that the second series of longitudinal slots are not aligned with the first series of longitudinal slots;
• and
• encapsulating the first metallic ring and the second metallic ring in a non-metallic material.

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a crimped metallic ring including a series of overlapping petals;
• a non-metallic inner ring attached to the inner diameter of the crimped metallic ring;
• and
• a non-metallic outer ring attached to the outer diameter of the crimped metallic ring.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a crimped metallic ring including a series of overlapping petals;
• attaching a non-metallic inner ring to the inner diameter of the crimped metallic ring;
• and
• attaching a non-metallic outer ring to the outer diameter of the crimped metallic ring.

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a crimped metallic ring including a series of overlapping petals;
• a metallic inner ring attached to the inner diameter of the crimped metallic ring;
• and
• a non-metallic outer ring attached to the outer diameter of the crimped metallic ring.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a crimped metallic ring including a series of overlapping petals;
• attaching a metallic inner ring to the inner diameter of the crimped metallic ring;
• and
• attaching a non-metallic outer ring to the outer diameter of the crimped metallic ring.

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a first metallic ring including a first series of petals;
• a second metallic ring including a second series of petals, the second metallic ring attached to the first metallic ring such that the outer diameter of the second metallic ring abuts the inner diameter of the first metallic ring and the second series of petals are offset from the first series petals;
• and
• a non-metallic material encapsulating the first metallic ring.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a first metallic ring including a first series of longitudinal slots;
• encapsulating the first metallic ring in a non-metallic material;
• providing a second metallic ring including a second series of longitudinal slots,
• placing the second metallic ring within the first metallic ring such that the outer diameter of the second metallic ring abuts the inner diameter of the first metallic ring;
• and
• arranging the second metallic ring within the first metallic ring such that the second series of longitudinal slots are not aligned with the first series of longitudinal slots.

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a first non-metallic ring including a first series of petals;
• a second non-metallic ring including a second series of petals, the second non-metallic ring attached to the first non-metallic ring such that the outer diameter of the second non-metallic ring abuts the inner diameter of the first non-metallic ring and the second series of petals are offset from the first series petals;
• and
• a non-metallic material encapsulating at least one of the non-metallic rings.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a first non-metallic ring including a first series of longitudinal slots;
• providing a second non-metallic ring including a second series of longitudinal slots,
• placing the second non-metallic ring within the first non-metallic ring such that the outer diameter of the second non-metallic ring abuts the inner diameter of the first non-metallic ring;
• arranging the second non-metallic ring within the first non-metallic ring such that the second series of longitudinal slots are not aligned with the first series of longitudinal slots;
• and
• encapsulating the first non-metallic ring and the second non-metallic ring in a non-metallic material.

A back-up assembly for preventing the extrusion of a non-metallic seal, the assembly comprising:

• a crimped non-metallic ring including a series of overlapping petals;
• a non-metallic inner ring attached to the inner diameter of the crimped non-metallic ring;
• and
• a non-metallic outer ring attached to the outer diameter of the crimped non-metallic ring.

A method of constructing a back-up assembly used for preventing the extrusion of a non-metallic seal, the method comprising:

• providing a crimped non-metallic ring including a series of overlapping petals;
• attaching a non-metallic inner ring to the inner diameter of the crimped non-metallic ring;
• and
• attaching a non-metallic outer ring to the outer diameter of the crimped non-metallic ring.