| 摘要 |
An o-ring seal assembly in combination with a downhole pump and an o-ring collar. The seal assembly includes a special o-ring device and two coacting seal holding members which cooperate together to provide an o-ring groove, and which separate to enable an o-ring of this invention to be received therewithin. The special o-ring includes a resilient o-ring and a retainer. The o-ring has an annular face thereof bonded to a concave face formed on the retainer member. In one form of the invention the retainer member is in the form of a cylinder having an outer concave wall bonded to the inner annular face of the o-ring. In another embodiment of the invention, the retainer member is in the form of an apertured disc having an upper concave wall bonded to a lower annular face of the o-ring. The o-ring preferably is made of rubber or rubber-like material while the retainer member is made of metal and is vulcanized to the rubber o-ring. Since the retainer member is nonexpansible, the separable members which form the groove enable the o-ring and retainer member to be slidably received thereon and the separable members are thereafter assembled, thereby capturing the o-ring and retainer within the groove.
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