A fluid degassing device, comprising: a first housing; a second housing disposed within the first housing; a first flow circuit defined by the second housing and the first housing between a first flow circuit opening and a second flow circuit opening of the first flow circuit; and a tube bundle of selectively permeable membrane tubes disposed in the first flow circuit between the second housing and first housing, wherein the tube bundle is disposed at least partially around a circumference of the second housing and the first flow circuit is defined between the first flow circuit opening of the first flow circuit and the second flow circuit opening such that fuel flows rotationally around the second housing through the tube bundle; wherein the tube bundle is configured to be in fluid communication with a second flow circuit to fluidly communicate with an inner channel of the tubes of the tube bundle, wherein the second flow circuit is partially fluidly isolated from the first flow circuit such that at least one first fluid, being a liquid, cannot pass through a wall of one or more tubes, but such that at least one second fluid, being a liquid, can pass through the wall of the one or more tubes to remove the first fluid from the second fluid; wherein the second housing includes an elongate portion extending from at least one base portion that is configured to mount to the first housing, wherein the tube bundle is disposed between the elongate portion and the first housing; and wherein the tube bundle is disposed around the entire circumference of the elongate portion of the second housing; and wherein the elongate portion includes a tapered shape; and further comprising one or more walls (133a, 133b) disposed between the second housing and the first housing to cause the flow in the first flow circuit to move radially outward and inward as the flow traverses a circumferential path between the first flow circuit opening and the second flow circuit opening. a first housing; a second housing disposed within the first housing; a first flow circuit defined by the second housing and the first housing between a first flow circuit opening and a second flow circuit opening of the first flow circuit; and a tube bundle of selectively permeable membrane tubes disposed in the first flow circuit between the second housing and first housing, wherein the tube bundle is disposed at least partially around a circumference of the second housing and the first flow circuit is defined between the first flow circuit opening of the first flow circuit and the second flow circuit opening such that fuel flows rotationally around the second housing through the tube bundle; wherein the tube bundle is configured to be in fluid communication with a second flow circuit to fluidly communicate with an inner channel of the tubes of the tube bundle, wherein the second flow circuit is partially fluidly isolated from the first flow circuit such that at least one first fluid, being a liquid, cannot pass through a wall of one or more tubes, but such that at least one second fluid, being a liquid, can pass through the wall of the one or more tubes to remove the first fluid from the second fluid; wherein the second housing includes an elongate portion extending from at least one base portion that is configured to mount to the first housing, wherein the tube bundle is disposed between the elongate portion and the first housing; and wherein the tube bundle is disposed around the entire circumference of the elongate portion of the second housing; and wherein the elongate portion includes a tapered shape; and further comprising one or more walls (133a, 133b) disposed between the second housing and the first housing to cause the flow in the first flow circuit to move radially outward and inward as the flow traverses a circumferential path between the first flow circuit opening and the second flow circuit opening.