Designed to fit any reservoir or bottle with GL 45 screw threads. Spot an opportunity for improvement?

GL45 3-Port Cap/Safety Filling Cap for 1/8" Inch OD Tubing,Solvent Delivery Cap with Two 1/4"-28 Thread Inserts Holes,for Glass Bottles by ZHANXUBIO (3 Ports for 1/8" Tubing)

Fisher Scientific - Linerless plug seal design for efficient sealing Shop Corning™ GL45 Polypropylene Screw Caps at Fishersci.com

The classic laboratory bottle GL threaded screw cap features the tried and tested cap plug sealing system ensuring a liquid tight seal. Available in four colours; blue, green, yellow and grey with matching pouring rings. Distinguishing media types is simplified and interchanging of screw caps and the risk of cross contamination is greatly reduced.

Create a closed system with GL-45 safety port caps, which seal to a bottle with a secure EPDM O-ring resistant to common HPLC solvents. This cap helps avoid twisted tubing due to its free-spinning collar design.

DURAN® GL 45 2-hose connection cap for the easy connection of flexible tubing to the DURAN® GL 45 bottles. The two polyproplylene connectors have angled top and straight underside connectors. Grey polypropylene cap center rotates freely, allowing the bottle to be unscrewed without the need to disconnect the tubing.

Foxx Life Sciences PUREGRIP® HPLC Solvent Reservoir Caps and Bottle system offer the safest and most ergonomic lab safety solution in the industry. This system come with VersaCap®, a Class VI PTFE Manifold, chemically resistant Viton O-Ring & Air Inlet Valve combined with a Foxx 25mm, 0.2µm PTFE Filter for safe vapor filtration.

Caps are designed to fit GL 45 threaded ware. Autoclavable; Solid top polypropylene or open top with membrane; A variety of cap colors available; Red, high-temperature version made from PBT(polybutylene terephthlate)

DURAN Original GL 45 laboratory bottles are available complete with high temperature screw caps and pouring rings. The red polybutylene terephthalate (PBT) GL 45 threaded caps with PTFE faced silicone cap liner and ETFE pouring rings offer greater thermal and chemical resistance than the equivalent polypropylene components.