A rotary seal (10) for a fluid handling machine comprising first circular body (12) with circumferential surface (28) and second circular body (16) with similar surface (27), such that the bodies when coaxially assembled, the circumferential surface (28) and similar surface (27) mate with each other forming a sealing surface contact. An internal end face (33) of rotary seal (10) is exposed to fluids with an inclination, such that the fluid pressure on internal end face (33) adds to contact force at sealing contact surface. The first circular body (12) is continuous and second circular body (16) with a split (17) has a spring characteristic such that two ends formed by the split (17), force away from each other, hence exerting a radial force on circumferential surface when assembled with first circular body (12) and compensating for circumferential wear during operation. The second circular body (16) exerts combination of axial, radial and tangential forces on circumferential surface (28) which results in force closure at sealing surface contact.