Seal systems for oil-filled cable terminations and assemblies and methods including the same

A method for forming a seal system for an oil-filled cable termination comprising a cable that is received through each of a cable gland and a stress cone that is spaced apart from the cable gland, the method comprising:

• forming a first oil seal layer around the cable between the cable gland and the stress cone;
• forming a second oil seal layer on the first oil seal layer;
• forming a first oil barrier layer on a lower portion of the second oil seal layer;
• forming a second oil barrier layer that is spaced apart from the first oil barrier layer on an upper portion of the second oil seal layer;
• and
• securing a heat shrinkable tube around the first and second oil barrier layers.

A seal system for an oil-filled cable termination comprising a cable extending through each of a cable gland and a stress cone that is spaced apart from the cable gland, the seal system comprising:

• a first oil seal layer surrounding the cable between the cable gland and the stress cone;
• a second oil seal layer overlapping and contacting the first oil seal layer;
• a first oil barrier layer overlapping and contacting an upper portion of the second oil seal layer;
• a second oil barrier layer overlapping and contacting a lower portion of the second oil seal layer, the second oil barrier layer spaced apart from the first oil barrier layer;
• and
• a heat shrinkable tube secured around the first and second oil barrier layers.