Periscope universal hull packing

A machine comprising a sealing apparatus and a tubular device, the tubular device being at least substantially characterized by a cylindrical shape, a longitudinal axis, and movability in an axial direction, the sealing apparatus being at least substantially symmetrical with respect to the longitudinal axis, the sealing apparatus comprising:

• a bearing sleeve including a rigid sleeve structure and a self-lubricating sleeve liner that covers at least a portion of the inside of the sleeve structure, the self-lubricating sleeve liner contacting the tubular device;
• a first spring-loaded seal including a first resilient lip-seal member and a first resilient ring-shaped metal spring, the first resilient lip-seal member having a first circumferential cavity and encompassing the first resilient ring-shaped metal spring within the first circumferential cavity, the first resilient ring-shaped metal spring encircling the longitudinal axis and lying in a first geometric plane, the first geometric plane being perpendicular to the longitudinal axis;
• a rigid first ring, for effecting spacing between the bearing sleeve and the first spring-loaded seal;
• a second spring-loaded seal including a second resilient lip-seal member and a second resilient ring-shaped metal spring, the second resilient lip-seal member having a second circumferential cavity and encompassing the second resilient ring-shaped metal spring within the second circumferential cavity, the second resilient ring-shaped metal spring encircling the longitudinal axis and lying in a second geometric plane, the second geometric plane being perpendicular to the longitudinal axis;
• a packing gland including a rigid gland structure and a self-lubricating gland liner that covers at least a portion of the inside of the rigid gland structure, the self-lubricating gland liner contacting the tubular device, the packing gland being configured to house the second spring-loaded seal, the rigid gland structure including a first end of the rigid gland structure and a second end of the rigid gland structure, the first end of the rigid gland structure having a longitudinal recess located radially inner;
• a rigid second ring, for effecting spacing between the first spring-loaded seal and the combination including the packing gland and the second spring-loaded seal, the rigid second ring including a first end of the rigid second ring and a second end of the rigid second ring, the second end of the rigid second ring having a longitudinal protrusion located radially inner;
• wherein the longitudinal protrusion of the rigid second ring nests into the longitudinal recess of the rigid gland structure;
• a resilient glandular O-ring, associated with the packing gland;
• and
• a rigid backup seal ring, situated between the first resilient lip-seal member and the rigid second ring;
• wherein the bearing sleeve, the first spring-loaded seal, the rigid first ring, the second spring-loaded seal, the packing gland, the rigid second ring, the resilient glandular O-ring, and the rigid backup seal ring are each at least substantially characterized by the longitudinal axis.