Heavy-duty seamless inserts are ideal for heavy stress applications such as high speed mixing and pumping of viscous products. Vacuum formed from LDPE and PP that meets FDA standards, featuring a molded lip to grip the drum chime and prevent seepage between the insert and drum wall. 30 gal. insert has a smooth sidewall, 55 gal. sizes are available in smooth or accordion style. Accordion style will adjust to varying drum heights. Liners are not self supporting tanks. Anti-Static liners are pink. #10252 is made from polypropylene and will withstand temperatures up to 300 F., momentarily, LDPE 195 F momentarily.