Self-venting movable seal and plunger

A method for venting trapped fluid out of a hollow cylindrical body while the hollow cylindrical body is being filled with a material, the method comprising:

• providing a hollow cylindrical body comprising a first opening and a second opening;
• providing a seal comprising a vent and a plunger tip pocket;
• providing a plunger tip comprising at least one vent channel;
• filling the hollow cylindrical body with the material;
• inserting the seal into the hollow cylindrical body, wherein a volume is defined within the hollow cylindrical body between the seal and the second opening of the hollow cylindrical body, wherein the volume contains a fluid, and further wherein the fluid within the volume is vented through the vent of the seal as the seal is inserted into the hollow cylindrical body;
• inserting the plunger tip into the hollow cylindrical body through the first opening of the hollow cylindrical body;
• and
• seating the plunger tip into the plunger tip pocket of the seal, wherein the plunger tip occludes the vent when the plunger tip is seated in the plunger tip pocket, and further wherein fluid within the plunger tip pocket escapes through the at least one vent channel in the plunger tip while the plunger tip is being seated in the plunger tip pocket.

A self-venting movable seal and plunger assembly, the assembly comprising:

• a hollow cylindrical body comprising a first opening and a second opening;
• a movable seal comprising:
• a plunger tip pocket,
• a first end and a second end, wherein a volume is defined within the hollow cylindrical body between the second end of the seal and the second opening of the hollow cylindrical body when the movable seal is located within the hollow cylindrical body, and
• a vent extending between the plunger tip pocket and the second end of the movable seal, wherein the plunger tip pocket is in fluid
• communication with the volume when the movable seal is located within the hollow cylindrical body;
• and
• a plunger tip comprising at least one vent channel, wherein the plunger tip is configured to seat within the plunger tip pocket of the movable seal, wherein the plunger tip occludes the vent in the movable seal when the plunger tip is seated within the plunger tip pocket, and further wherein fluid within the plunger tip pocket escapes through the at least one vent channel in the plunger tip as the plunger tip is seated in the plunger tip pocket.

A self-venting movable seal and plunger assembly, the assembly comprising:

• a hollow cylindrical body comprising a first opening and a second opening;
• a movable seal comprising:
• a plunger tip pocket,
• a first end and a second end, wherein a volume is defined within the hollow cylindrical body between the second end of the seal and the second opening of the hollow cylindrical body when the movable seal is located within the hollow cylindrical body,
• a vent extending between the plunger tip pocket and the second end of the movable seal, wherein the plunger tip pocket is in fluid communication with the volume when the movable seal is located within the hollow cylindrical body, and
• at least one pair of retaining plug receptacles;
• and
• a plunger tip comprising:
• at least one vent channel, and
• at least one pair of retaining plugs, wherein the plunger tip is configured to seat within the plunger tip pocket of the movable seal, wherein the plunger tip occludes the vent in the movable seal when the plunger tip is seated within the plunger tip pocket, wherein fluid within the plunger tip pocket escapes through the at least one vent channel in the plunger tip as the plunger tip is seated in the plunger tip pocket, and further wherein the at least one pair of retaining plugs is configured to fit in the at least one pair of retaining plug receptacles of the movable seal.