Patent ID: 8814008

Claim:
A seal assembly which provides a redundant sealing function between a switching section and an output section of a pressurised container of the continuous discharge type, wherein the output section is received in the switching section and wherein the output section is depressed when received in the switching section such that material in the pressurised container is free to leave the pressurised container, the seal assembly comprising a first seal element and a second seal element separated by a spacer which is between and which contacts both said first seal portion and second seal portion and thereby defining a passage which contains a portion of the output section of the pressurized container, wherein the first seal portion is adapted to form a seal with an end face of the output section of the pressurised container, and the second seal portion is adapted to form a seal with a side wall of the output section, and wherein the two seals provide a redundant sealing function in the seal assembly.