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A seal and a mask using a seal that includes a first end portion adapted to be coupled to a seal support, a second end portion adapted for sealing engagement with a face of a user, and a sidewall extending between the first end portion and the second end portion. The first end portion, second end po

A seal and a mask using a seal that includes a first end portion adapted to be coupled to a seal support, a second end portion adapted for sealing engagement with a face of a user, and a sidewall extending between the first end portion and the second end portion. The first end portion, second end portion, sidewall, or any combination thereof is formed from an elastomeric material having an elongation of at least 1000%. The seal preferably formed from a unitary piece of elastomeric material.

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1. A facial cushion comprising: a first end portion;a second end portion adapted for sealing engagement with a face of a user such that the second end portion of the cushion contacts a surface of such a user when donned by such a user; anda sidewall extending between the first end portion and the se

1. A facial cushion comprising: a first end portion;a second end portion adapted for sealing engagement with a face of a user such that the second end portion of the cushion contacts a surface of such a user when donned by such a user; anda sidewall extending between the first end portion and the second end portion, and wherein at least one of the first end portion, the second end portion, and the sidewall is formed from an elastomeric material having an elongation of at least 1000%, and wherein a second portion of the cushion comprises a reinforcing material having an elongation property less than 1000% operatively coupled to the elastomeric material. 2. The cushion of claim 1, wherein the elongation is in a range of 1000%-1800%. 3. The cushion of claim 1, wherein the elastomeric material includes at least one of the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, ora tear strength in a range of 40-50 PLI. 4. The cushion of claim 1, wherein the elastomeric material includes the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, anda tear strength in a range of 40-50 PLI. 5. The cushion of claim 1, wherein the first end portion, the second end portion, and the sidewall are all formed from the elastomeric material. 6. The cushion of claim 5, wherein the elastomeric material includes at least one of the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, ora tear strength in a range of 40-50 PLI. 7. The cushion of claim 5, wherein the elastomeric material includes the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, anda tear strength in a range of 40-50 PLI. 8. The cushion of claim 1, further comprising at least one opening defined in the second end portion. 9. The cushion of claim 8, further comprising a rim defined around at least a portion of a perimeter defining the opening, and wherein at least a portion of the rim is deflected inwardly into the opening. 10. The cushion of claim 1, further comprising a nose receiving recess defined in second end portion and at least one opening defined in the recess. 11. The cushion of claim 1, wherein the second end portion is generally planar. 12. The cushion of claim 1, wherein the sidewall is reinforced. 13. The cushion of claim 12, wherein reinforced sidewall comprises an increased thickness, a stiffening member operatively coupled to the sidewall, or both. 14. The cushion of claim 1, further comprising at least one opening defined in second end portion, wherein the second portion includes an area around the opening, a portion of the sidewall, or both. 15. A respiratory mask comprising: (a) a mask body; and(b) a cushion operatively coupled to the mask body, the cushion comprising: (1) a first end portion adapted to be coupled to a cushion support,(2) a second end portion adapted for sealing engagement with a face of a user such that the second end portion of the cushion contacts a surface of such a user when the respiratory mask is donned by such a user, and(3) a sidewall extending between the first end portion and the second end portion, and wherein at least one of the first end portion, the second end portion, and the sidewall is formed from an elastomeric material having an elongation of at least 1000%, and wherein a second portion of the cushion comprises a reinforcing material having an elongation property less than 1000% operatively coupled to the elastomeric material. 16. The mask of claim 15, wherein the elongation is in a range of 1000%-1800%. 17. The mask of claim 15, further comprising a retaining member adapted to couple the seal to the mask body. 18. The mask of claim 15, wherein the elastomeric material includes at least one of the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, ora tear strength in a range of 40-50 PLI. 19. The mask of claim 15, wherein the elastomeric material includes the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, anda tear strength in a range of 40-50 PLI. 20. The mask of claim 15, wherein the first end portion, the second end portion, and the sidewall are all formed from the elastomeric material. 21. The mask of claim 20, wherein the elastomeric material includes at least one of the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, ora tear strength in a range of 40-50 PLI. 22. The mask of claim 20, wherein the elastomeric material includes the following properties: a durometer in a range of 10-50 on a shore 00 scale,a 300% Modulus in a range of 10-15 PSI, anda tear strength in a range of 40-50 PLI. 23. The mask of claim 15, further comprising at least one opening defined in second end portion. 24. The mask of claim 23, further comprising a rim defined around at least a portion of a perimeter defining the opening, and wherein at least a portion of the rim is deflected inwardly into the opening. 25. The mask of claim 15, further comprising a nose receiving recess defined in second end portion and at least one opening defined in the recess. 26. The mask of claim 15, wherein the second end portion is generally planar. 27. The mask of claim 15, wherein the sidewall is reinforced. 28. The mask of claim 27, wherein reinforced sidewall comprises an increased thickness, a stiffening member operatively coupled to the sidewall, or both. 29. The mask of claim 15, further comprising at least one opening defined in second end portion, wherein the second portion includes an area around the opening, a portion of the sidewall, or both.