Combination cap and plug assembly

A system for restricting flow of a material, comprising:

• at least one tube;
• a male coupling, comprising:
• a male coupling fluid channel formed therein to allow a first material to flow therethrough,
• a flange member, and
• an insert member including a primary sealing surface, a secondary sealing surface, and an intermediate member extending between the flange member and the secondary sealing surface;
• a female coupling, comprising
• a female coupling fluid channel formed therein to allow a second material to flow therethrough, and
• a seal member formed within a lead-in receptacle;
• and
• a combination cap and plug assembly, comprising:
• a main body including first and second ends and first and second sides;
• a tether member positioned at the first end, the tether member defining an opening sized to receive the at least one tube;
• a cap portion positioned adjacent the second end and extending from the first side of the main body, the cap portion defining an opening sized to receive a portion of the male coupling and configured to restrict flow of the first material through the male coupling fluid channel;
• and
• a plug portion positioned adjacent the second end and extending from the second side of the main body, the plug portion including a body sized to be at least partially inserted into the female coupling and configured to restrict flow of the second material through the female coupling fluid channel.