Stainless steel to PYREX® to stainless steel seals are available from 1/2” to 3” OD. These can be supplied without or with standard vacuum style flanges. Custom combinations can be supplied.
Larson Electronic Glass offers "Double Ended Stainless Steel-to-PYREX®-to-Stainless Steel Adaptors" available in 8 standard sizes from 1/2 inch through 6 inch and are also offered in other non-standard sizes. Dimensions are in inches unless otherwise noted.