Safety Caps – GL45 Threads

VICI Jour SKU: JR-S-11011

Number of Ports: 2
Quote Only


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

Connections: 1/4-28


Part Material
Closure Polypropylene
Insert PTFE
Stopcock PCTFE
O-ring EPDM (alternative: FEP-coated)
Nuts PPS
Ferrules ETFE
Sleeves Polypropylene

More information about the chemical resistance of these materials:

Chemical Resistance

See also:

Color-Sleeve Fingertight Adapters

Safety Exhaust Filters

Safety Air Inlet Valves

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