Clamping ring

A clamping ring, that, in use, presses a pipe against a connecting piece by back shrinkage, the clamping ring comprising:

• a barrel-shaped body including a plastic material having memory properties, wherein the body has:
• a first end to be positioned at a distance from an end of the pipe and a second end to be positioned close to the end of the pipe;
• a first position at the first end or at a distance from the first end having a first radial wall thickness (A);
• and at least one second position between the first position and the second end having a second radial wall thickness (B), wherein the second radial wall thickness (B) is smaller than the first radial wall thickness (A), wherein the body is configured to automatically shrink, without heating, so as to cause a seal between an inner surface of the pipe and an outer surface of the connecting piece, wherein the clamping ring has a flat elbow at the second end and the second end of the clamping ring is shaped to have an outer bevel.

A clamping ring that, in use, presses a pipe against a connecting piece by back shrinkage, the clamping ring comprising:

• a barrel-shaped body including a plastic material having memory properties, wherein the body has:
• a first end to be positioned at a distance from an end of the pipe and a second end to be positioned close to the end of the pipe;
• a first position at the first end or at a distance from the first end having a first radial wall thickness (A);
• and at least one second position between the first position and the second end having a second radial wall thickness (B), wherein the second radial wall thickness (B) is smaller than the first radial wall thickness (A), wherein the body is configured to automatically shrink, without heating, so as to cause a seal between an inner surface of the pipe and an outer surface of the connecting piece, wherein the inner surface of the clamping ring is conical.

A clamping ring that, in use, presses a pipe against a connecting piece by back shrinkage, the clamping ring comprising:

• a barrel-shaped body including a plastic material having memory properties, wherein the body has:
• a first end to be positioned at a distance from an end of the pipe and a second end to be positioned close to the end of the pipe;
• a first position at the first end or at a distance from the first end having a first radial wall thickness (A);
• and at least one second position between the first position and the second end having a second radial wall thickness (B), wherein the second radial wall thickness (B) is smaller than the first radial wall thickness (A), wherein the body is configured to automatically shrink, without heating, so as to cause a seal between an inner surface of the pipe and an outer surface of the connecting piece, wherein the body has an irregular outer surface formed by ridges.