A testing device for testing seals (9, 19, 29), in particular tubbing seals, having at least one anchoring foot, wherein a. the testing device comprises at least one first plate having a first surface comprising a first recess and at least one second plate having a second surface comprising a second recess, wherein the surfaces (4, 14) of the plates (2, 12) substantially oppose one another at least partially with their recesses (3, 13), and b. in each case at least two plate elements (5, 7; 15, 17) are releasably fastened in the first and second recess (3, 13), wherein the plate elements (5, 7; 15, 17) are designed and arranged such that they form in each case a groove (8, 18) in the recesses (3, 13), a seal (9, 19) having at least one anchoring foot being able to be inserted into said groove, such that i. the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot, or ii. an intermediate space is formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot of the seal (9, 19), a curing or curable material being able to be introduced therein, so that after the curing of the material the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17), the cured material and the at least one anchoring foot. a. the testing device comprises at least one first plate having a first surface comprising a first recess and at least one second plate having a second surface comprising a second recess, wherein the surfaces (4, 14) of the plates (2, 12) substantially oppose one another at least partially with their recesses (3, 13), and b. in each case at least two plate elements (5, 7; 15, 17) are releasably fastened in the first and second recess (3, 13), wherein the plate elements (5, 7; 15, 17) are designed and arranged such that they form in each case a groove (8, 18) in the recesses (3, 13), a seal (9, 19) having at least one anchoring foot being able to be inserted into said groove, such that i. the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot, or ii. an intermediate space is formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot of the seal (9, 19), a curing or curable material being able to be introduced therein, so that after the curing of the material the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17), the cured material and the at least one anchoring foot. i. the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot, or ii. an intermediate space is formed between the plate elements (5, 7; 15, 17) and the at least one anchoring foot of the seal (9, 19), a curing or curable material being able to be introduced therein, so that after the curing of the material the seal (9, 19) is anchored by means of a positive connection formed between the plate elements (5, 7; 15, 17), the cured material and the at least one anchoring foot.