601993 An ostomy appliance comprising an inflatable seal (20) for forming a seal at a stoma (22), the inflatable seal comprising: a first inflatable chamber portion for insertion into the stoma for forming an internal seal; a second inflatable chamber for forming an external seal with respect to the stoma; and a discharge portion (28) extending through the first and second chamber portions. The discharge portion is defined at least partly by an inflatable support (28a) coupled to at least one of the first and second chamber portions, the discharge portion having stiffness greater than the first and second chamber portions.