Flange formula pipe fitting seal for pipe joints device

The utility model discloses a flange formula pipe fitting seal for pipe joints device, including cavate flanged pipe, sealing washer, locking ring and supported flange, sealing washer, locking ring and supported flange and cavate flanged pipe connect gradually, a side end face of supported flange be equipped with with cavate flanged pipe on the draw -in groove structure that corresponds of keyway, the interior anchor ring of supported flange is close to locking ring one side and is the taper surface, the taper surface offsets with the male cone (strobilus masculinus) of locking ring, the locking ring internal surface is equipped with latch or snap ring and pipeline locking, and the nearly sealing washer of surface one side is the male cone (strobilus masculinus), and its nearly sealing washer on -edge terminal surface offsets with the sealing washer, the one side and the locking ring of sealing washer are connected, and the opposite side supports with cavate flanged pipe's sealed facial features. This applica