| 摘要 |
<p>The present disclosure relates to methods and apparatus for the sealing of pipes. The apparatus includes a seal (423), the seal being a toroidal seal. The seal may be formed from a pipe (PPPP) to be sealed by cutting a portion of the pipe to form such a seal. The seal may be machined with generally convex edges (423c). The disclosure also relates to a method of sealing a pipe using such a seal and a method of manufacturing a seal from a pipe to be sealed.</p> |
