Final answer:
The container used to house the 30 mm ammunition in link tube carriers is made from a 7 cm diameter PVC pipe with 10 holes (3 mm) in both ends across its diameter. It is closed on one end by a nylon lid and on the other end by a screw-on PVC lid. Two wide rubber rings covered the holes, making the capsules watertight.
Step-by-step explanation:
The container used to house the 30 mm ammunition in link tube carriers is made from a 7 cm diameter PVC pipe with 10 holes (3 mm) in both ends across its diameter. It is closed on one end by a nylon lid and on the other end by a screw-on PVC lid. Two wide rubber rings covered the holes, making the capsules watertight.