Nalge 5305 series Transparent, cylindrical polyetherimide jar inverted on white polycarbonate base plate that has removable tubing adapter for connection to 1/4-inch i.d. vacuum tubing Vacuum rating 29 inches Hg @ 25°C Jar has amber cast and seals against Neoprene gasket in base …

Nalge 5305 series Transparent polyetherimide with amber cast As furnished with 1577T14 and 1577T18 Bell Jars. Replacement gaskets are available.

White polycarbonate Plate is 13 1/2” x 1” thick, with three concentric Neoprene gaskets, 8”, 11 1/8” and 9” o.d. Gaskets lie in channels separated by concentric ridges which serve to center and to brace rim of bell jar.