- PTFE – long lasting and chemically resistant
- Viton O-Ring – allows for a supreme seal, while remaining chemical resistance
- Comes in three sizes – (24/40 to KF-25), (29/42 to KF-25), and (34/45 to KF-25)
Note: When using these fittings in conjunction with a vacuum monitor, the vacuum probe should never lie upside down. A vacuum probe should always be in the upright position, and it may require a 90° adapter to do so.