It is made of EPDM,with Stainless steel inside. It can use for container sealing. The quality is good, the key lies in sealing

Rubber Sealing

Features:

1)for container sealing2)Made by EPDM rubber and Stainless Steel reinforced

3)Welcome your drawing,samples for tooling

4)Own ISO,TS16949 Certificate for reference.Sincerely welcome your inquiries

Seals of Door Accessories -- Rubber Sealing