Patent ID: 8240720

Claim:
A packing comprising: a main body inserted into tubular members through an inner-diameter-opening of each of respective ends of the tubular members; and an elastic portion which is situated substantially at a center of the main body, and against which each of the respective ends of the tubular members is abutted, wherein: the main body comprises: outer peripheral surfaces coming into contact with inner diameter surfaces of the tubular members, respectively; tapered surfaces tapered toward tip ends of the outer peripheral surfaces; recessed portions defined by steps forming the tapered surfaces and the outer peripheral surfaces; and a convex portion formed between the recessed portions and abutted against each end of the tubular members through the elastic portion; and the elastic portion comprises: an enclosing portion enclosing the convex portion of the main body; and extending portions which extend from the enclosing portion, and has tip ends fitting into the recessed portions of the main body, respectively.