A vacuum assembly for a refrigerator, comprising: a sealed box comprising an upper sealing body and a lower sealing body, wherein the upper sealing body and the lower sealing body are buckled to define an accommodating cavity, and a notch portion is provided at the joint between the upper sealing body and the lower sealing body; a vacuum pump disposed in the accommodating cavity; and anelastic seal characterized by a buckling portion composed of two H-shaped members that are flexibly connected; the two H-shaped members are buckled with each other to form a mounted state; the H-shaped member has a first arm and a second arm which are parallel to each other, and a connecting portion which connects the first arm and the second arm; the connecting portion has an arcuate surface; and the arcuate surfaces of the two H-shaped members cooperatively define a hollow cavity when the two H-shaped members are in the mounted state; wherein the mounted state of the buckling portion is matched with the notch portion; the elastic seal further comprises an annular portion with a circular cross section, wherein the annular portion is integrally formed with the buckling portion and is matched with an engaging portion between the upper sealing body and the lower sealing body, the bottom of the upper sealing body is provided with a first groove, and the top of the lower sealing body is provided with a second groove; the first groove and the second groove cooperatively define a mounting groove for the annular portion, the annular portion has a stretching amount of 2-5% when sleeved in the mounting groove and has a compression by 20-30% when the upper sealing body and the lower sealing body are buckled. a sealed box comprising an upper sealing body and a lower sealing body, wherein the upper sealing body and the lower sealing body are buckled to define an accommodating cavity, and a notch portion is provided at the joint between the upper sealing body and the lower sealing body; a vacuum pump disposed in the accommodating cavity; and anelastic seal characterized by a buckling portion composed of two H-shaped members that are flexibly connected; the two H-shaped members are buckled with each other to form a mounted state; the H-shaped member has a first arm and a second arm which are parallel to each other, and a connecting portion which connects the first arm and the second arm; the connecting portion has an arcuate surface; and the arcuate surfaces of the two H-shaped members cooperatively define a hollow cavity when the two H-shaped members are in the mounted state; wherein the mounted state of the buckling portion is matched with the notch portion; the elastic seal further comprises an annular portion with a circular cross section, wherein the annular portion is integrally formed with the buckling portion and is matched with an engaging portion between the upper sealing body and the lower sealing body, the bottom of the upper sealing body is provided with a first groove, and the top of the lower sealing body is provided with a second groove; the first groove and the second groove cooperatively define a mounting groove for the annular portion, the annular portion has a stretching amount of 2-5% when sleeved in the mounting groove and has a compression by 20-30% when the upper sealing body and the lower sealing body are buckled. a buckling portion composed of two H-shaped members that are flexibly connected; the two H-shaped members are buckled with each other to form a mounted state; the H-shaped member has a first arm and a second arm which are parallel to each other, and a connecting portion which connects the first arm and the second arm; the connecting portion has an arcuate surface; and the arcuate surfaces of the two H-shaped members cooperatively define a hollow cavity when the two H-shaped members are in the mounted state; wherein the mounted state of the buckling portion is matched with the notch portion; the elastic seal further comprises an annular portion with a circular cross section, wherein the annular portion is integrally formed with the buckling portion and is matched with an engaging portion between the upper sealing body and the lower sealing body, the bottom of the upper sealing body is provided with a first groove, and the top of the lower sealing body is provided with a second groove; the first groove and the second groove cooperatively define a mounting groove for the annular portion, the annular portion has a stretching amount of 2-5% when sleeved in the mounting groove and has a compression by 20-30% when the upper sealing body and the lower sealing body are buckled.