Solid, virgin PTFE, standard taper joint inserts are designed for use with flat glass heads.

• Use with flat glass heads
• Allows for increased working space above the head
• Secured to head with reverse threaded locking nut
• Sealed using FETFE O-Ring

This low profile insert allows for increased working space above the head. The insert is secured to the head with a reverse threaded locking nut and sealed using a FETFE O-Ring. The top of the insert is formed to allow the use of certain joint clips. For use with Flat Glass Heads 89054-638 and 89084-094.