This 343mm polycarbonate vacuum plate is for use with Nalgene® brand vacuum chamber jar (Nalgene® #: DS5320-0910 DS5320-1212) or with glass bell jars up to 12-1/2 inches in diameter. Supplied with 3/32 inch thick neoprene gasket. Tubing adapter that fits 1/4 inch I.D. tubing is conveniently located on rim of plate. Replacement gaskets are also available. Material: white polycarbonate. O.D. x thickness: 343 x 27mm (13-1/2 x 1-1/16 inches). 1/Pack; 4/Case. Nalgene® #: 5306-0130.