Patent ID: 8919609

Claim:
A device comprising: a plunger; a barrel attached to the plunger, the barrel configured to hold a first dental barrel holding a first dental material and a second dental barrel holding a second dental material, wherein the barrel comprises a male auto-aligning fitting element having a protruding dam; a mixing tip attached to the barrel, wherein the mixing tip comprising a female auto-aligning fitting element having a split slot, wherein the protruding dam of the male auto-aligning fitting element is configured to align with and press on the split slot of the female auto-aligning fitting element; and a seal component attached to the mixing tip, wherein the seal component is structured to match up with and insert into the female auto-aligning fitting element, wherein the seal component comprises a soft material and the female auto-aligning fitting element comprising a hard material, wherein the soft material of the seal component is configured to shrink and expand, wherein the soft material of the seal component shrinks upon receiving pressure from the hard material of the female auto-aligning fitting element.