White PP or PC. Neoprene gasket. For glass bell jars up to 318 mm Ø. Supplied with 2.4 mm thick gaskets. Tubing adapter that fits 6.4 mm inner Ø. Tubing is conveniently located on rim of plate. PEI. These chemically-resistant jars have an amber cast and may be useful for demanding service. Transparent. White PP or PC. Neoprene gasket. For glass bell jars up to 318 mm Ø. Supplied with 2.4 mm thick gaskets. Tubing adapter that fits 6.4 mm inner Ø. Tubing is conveniently located on rim of plate. PEI. These chemically-resistant jars have an amber cast and may be useful for demanding service. Transparent.