GL45 Safety caps fit all bottles or canisters that have GL45 thread. They have built-in stopcocks rated up to 72 psi gas at 25°C. Safety caps have 2, 3, and 4 ports available. Unused ports can be closed with the stopcock, and all ports can handle 1/8" or 1/16" OD tubing.
GL45 safety caps for bottles and canisters seal with an O-ring (EPDM) which is resistant to commonly used HPLC solvents. If improved chemical resistance is required (e.g., for halogenated hydrocarbons), order an FEP-coated O-ring separately.
A bottom-sealing barbed adapter to connect 1/8" (3.2 mm) ID tubing can be ordered separately.
Each safety cap purchase includes:
- 1 cap, GL45 thread, with stopcocks
- 1 O-ring, EPDM
- 1 set: 1/16" nut/ferrule/color-sleeve adapter
- 1, 2, or 3 sets: 1/8" nut/ferrule/color-sleeve adapter
- Additional nuts and ferrules for the bottom side connections
Note: One port must be reserved for the exhaust filter or the air inlet valve
|O-ring||EPDM (alternative: FEP-coated)|
More information about the chemical resistance of these materials: