Red cap with standard GL45 screw thread made of polybutene terephthalate (PBT) with silicone inner disc and poly tetrafluoroethylene teflon (PTFE) coating.
Resistant to sterilisation by autoclaving up to a maximum temperature of 200 °C.
This closure is complemented by the red PBT pouring ring, which helps to better dispense a liquid. Available for sale by the piece.

Box of 350 units: Black, tamper-evident cap with standard 45 mm screw and PTFE inner seal. Closure for laboratory reagent bottles.
Made of polypropylene plastic (PP) and polytetrafluoroethylene Teflon (PTFE) inner seal.
Resistant to autoclave sterilization up to 140 °C temperature.

Black butyl rubber septum for DIN45 screw caps with hole
Upper diameter 40 mm
Lower diameter 31 mm
Autoclave up to 140 °C
The closure is complemented by a GL45 screw cap with hole which is not included with this part number, available for purchase as individual parts.

Standard blue GL45 screw cap with septum hole made of polypropylene plastic (PP).
Orifice diameter 34 mm
Autoclave up to 140 °C autoclave temperature
The closure complemented by a black septum which is not included with this reference, available to buy by individual pieces. See below for reference number. 079.008

Blue GL45 screw cap with inner skirt and red safety ring
Specially designed for use in biological, food, pharmaceutical and other research laboratories.
The skirt is a part integrated in the inside of the cap for the adjustment with the mouth of the bottle, which guarantees a better seal with the bottle.
The tamper-evident ring is a tamper-evident seal that has not been tampered with until it is opened by the customer.

Blue GL45 Screw Cap with 3 Vent Holes for Cell Culture.
Standard laboratory bottle closure, designed to ensure a secure seal and optimal gas exchange.
Incorporates an integrated septum membrane that enhances closure stability.
Made from high-quality materials, it meets laboratory standards.
Its three strategically placed ventilation holes promote aeration in cell culture processes.