Patent ID: 7966754

Claim:
A sleeve comprising: an elongated annular portion having a first end and a second end, and an inner circumferential surface and outer circumferential surface, wherein the first and second ends of the elongated annular portion are substantially coextensive with a first end and a second end of the sleeve; a flange portion extending radially outward from near the first end of the elongated annular portion, the flange having an outer circumferential surface whose diameter is greater than the diameter of the outer circumferential surface of the annular portion; a circumferential first O-ring groove formed on the inner circumferential surface of the annular portion between the first end and the second end; a first O-ring positioned in the first O-ring groove; a circumferential second O-ring groove formed on the outer circumferential surface of the flange portion; and a second O-ring positioned in the second O-ring groove.