• PTFE construction
• Locking collar mechanism
• Chemical resistant
• Temperature resistant

Key specifications include:

– **Material**: PTFE (polytetrafluoroethylene), known for chemical inertness and broad compatibility

– **Locking Collar Geometry**: A mechanical collar or flange that helps locate the O-ring precisely on the glass end

– **Dimensional Fit**: Designed to match the bore and outer diameter of mating glass components

– **Sealing Capability**: Suitable for vacuum and low-to-moderate pressure systems, depending on flange and coupling design

– **Thermal Range**: PTFE can typically withstand from cryogenic up to moderate elevated temperatures, depending on design constraints

– **Durability**: Designed to resist creep, cold flow, and wear during repeated installations

– **Installation Ease**: Collar ensures proper alignment and helps prevent gasket dislodgement during assembly

– **Compatibility**: Must be chemically compatible with the process fluid, including in halogen or aggressive media

Typical usage scenarios for PTFE O-rings with locking collars include:

– Glass-to-glass or glass-to-metal coupling joints where precision alignment is critical

– Modular glassware systems where repeated disassembly/reassembly occurs

– Chemical processing units requiring inert and leak-resistant seals

– Laboratory or pilot plant equipment handling corrosive fluids

– Seals in vacuum or moderate pressure environments

– Situations where operator handling may displace a gasket without collar guidance

By securing the O-ring in position during flange mating, these components reduce installation errors and enhance seal reliability.