Tube joint

A tube joint for jointing a tube and a joint body, wherein an end of the tube is inserted inside the joint body at its end, comprising:

• a pushing ring provided around an outer periphery of the tube;
• a fastening tool capable of moving the pushing ring in a direction of the joint body;
• a resilient packing provided around the outer periphery of the tube between the pushing ring and the joint body, the end of said joint body having a widened portion to receive the packing where the packing is compressed and fitted to the widened portion of the joint body;
• and
• a spacer provided around the outer periphery of the tube and interposed between the pushing ring and the packing, said spacer having a recess to support an end of the packing which is not fitted to the widened portion, said spacer comprising (i) a portion to be pushed by the pushing ring toward the joint body by operation of the fastening tool to compress and fit the packing in the widened portion of the joint body, and (ii) a portion contacting the joint body to restrain further compression of the packing;
• wherein said packing has an inner periphery greater in diameter than an outer periphery of said tube.

A tube joint for jointing a tube and a joint body, wherein an end of the tube is inserted inside the joint body at its end, comprising:

• a pushing ring provided around an outer periphery of the tube;
• a fastening tool attached to the pushing ring and being capable of moving the pushing ring in a direction of the joint body;
• a resilient packing provided around the outer periphery of the tube between the pushing ring and the joint body, the end of said joint body having a widened portion to receive the packing where the packing is compressed and fitted to the widened portion of the joint body;
• and
• a spacer provided around the outer periphery of the tube and interposed between the pushing ring and the packing, said spacer having a recess to support an end of the packing which is not fitted to the widened portion, said spacer comprising (i) a portion in contact with the pushing ring, to be pushed by the pushing ring toward the joint body by operation of the fastening tool to compress and fit the packing in the widened portion of the joint body, and (ii) a portion contacting the joint body to restrain further compression of the packing.

A tube joint for jointing a tube and a joint body, wherein an end of the tube is inserted inside the joint body at its end, comprising:

• a pushing ring provided around an outer periphery of the tube;
• a fastening tool capable of moving the pushing ring in a direction of the joint body;
• a resilient packing provided around the outer periphery of the tube between the pushing ring and the joint body, the end of said joint body having a widened portion to receive the packing where the packing is compressed and fitted to the widened portion of the joint body;
• and
• a spacer provided around the outer periphery of the tube and interposed between the pushing ring and the packing, said spacer having a recess to support an end of the packing which is not fitted to the widened portion, said spacer comprising (i) a portion to be pushed by the pushing ring toward the joint body by operation of the fastening tool to compress and fit the packing in the widened portion of the joint body, and (ii) a portion contacting the joint body to restrain further compression of the packing,
• wherein said packing comprises a base proximal to said pushing ring and a tip end proximal to said joint body, said base and said tip end being made of different materials, said tip end being softer than said base.