A seal assembly, comprising: a connector body having an open end configured for receiving a free end of a pipe; an adaptor for securing at the free end of a pipe; the adaptor comprising a first ring, configured to be mounted around the circumference of the free end of the pipe, and a second ring configured to cooperate with the first ring in order to drive the first ring into engagement with an outer surface of the pipe; and a mechanical interlock arrangement configured for driving the adaptor in the direction of the connector body, when the adaptor is secured at the free end of a pipe; wherein the connector body includes a metal seal surface, and the mechanical interlock is configured for driving the free end of the pipe against the metal seal surface of the body, when the adaptor is secured to the outer surface of the pipe, in order to create a seal between the free end of the pipe and said metal seal surface of the connector body; wherein the mechanical interlock arrangement is further configured for preventing or limiting axial movement of the pipe relative to the connector body, when the adaptor is secured to the outer surface of the pipe and when the free end of the pipe is in sealing contact with said metal seal surface of the connector body; wherein the seal assembly further comprises a locating arrangement for ensuring a desired alignment of the mechanical interlock arrangement with the connector body, as the adaptor is moved in the direction towards the connector body; wherein the connector body includes a first recess, and wherein a first end of the first ring is configured to nest within said recess when the second ring is driven in the direction of the connector body; and wherein the locating arrangement comprises an end face of the connector body having a second recess, and an end face of the adaptor having a projection configured to be received within said recess during movement of the adaptor in the direction towards the connector body. a connector body having an open end configured for receiving a free end of a pipe; an adaptor for securing at the free end of a pipe; the adaptor comprising a first ring, configured to be mounted around the circumference of the free end of the pipe, and a second ring configured to cooperate with the first ring in order to drive the first ring into engagement with an outer surface of the pipe; and a mechanical interlock arrangement configured for driving the adaptor in the direction of the connector body, when the adaptor is secured at the free end of a pipe; wherein the connector body includes a metal seal surface, and the mechanical interlock is configured for driving the free end of the pipe against the metal seal surface of the body, when the adaptor is secured to the outer surface of the pipe, in order to create a seal between the free end of the pipe and said metal seal surface of the connector body; wherein the mechanical interlock arrangement is further configured for preventing or limiting axial movement of the pipe relative to the connector body, when the adaptor is secured to the outer surface of the pipe and when the free end of the pipe is in sealing contact with said metal seal surface of the connector body; wherein the seal assembly further comprises a locating arrangement for ensuring a desired alignment of the mechanical interlock arrangement with the connector body, as the adaptor is moved in the direction towards the connector body; wherein the connector body includes a first recess, and wherein a first end of the first ring is configured to nest within said recess when the second ring is driven in the direction of the connector body; and wherein the locating arrangement comprises an end face of the connector body having a second recess, and an end face of the adaptor having a projection configured to be received within said recess during movement of the adaptor in the direction towards the connector body.