Larson Electronic Glass double ended PYREX® to bellows adaptors allow a connection from PYREX® to PYREX® and have the flexibility to allow angular motion or alignment. These are not available with a flange.
Larson Electronic Glass offers "Stainless Steel Bellows-to-PYREX® Adaptors" available in 9 standard sizes from 1/4 inch through 3 inch. Bellows are supplied with standard thin cuffs, heavy cuff, vacuum flanges, or glass on both ends. Dimensions are in inches unless otherwise noted.