Fluo-Kem PTFE Sleeves With Grip Ring and Outer RibsFor 24/40 Joints (Pack of 3)Reusable Teflon® SleevesKeep standard taper glass joints from seizing, leaking or galling with these reusable Teflon® sleeves.No lubricant required to make a vacuum-tight jointTop of each sleeve has a rigid, knurled grip ..
Fluo-Kem PTFE Sleeves With Grip Ring and Outer RibsFor 29/42 Joints (Pack of 3)Reusable Teflon® SleevesKeep standard taper glass joints from seizing, leaking or galling with these reusable Teflon® sleeves.No lubricant required to make a vacuum-tight jointTop of each sleeve has a rigid, knurled grip ..