Is the STORZ firefighter connector cap with lock and chain, aluminum compatible with other Storz fittings and standards?

Yes. The STORZ firefighter connector cap with lock and chain, aluminum is compatible with other Storz fittings and standards that share the same hook spacing and Storz coupling dimensions. Its symmetrical connecting design allows it to mate easily with matching Storz components used across firefighting, irrigation, chemical, food, and agricultural applications. Compatibility depends on matching the standard Storz coupling size and hook spacing; when those match, the aluminum cap will form a proper connection and seal (white NBR rubber) suitable for working pressures up to 16 bar.

Can the STORZ firefighter connector cap with lock and chain, aluminum withstand chemical exposure in industrial applications?

The STORZ firefighter connector cap with lock and chain, aluminum can be used in many industrial settings including chemical applications, but suitability depends on the specific chemicals involved. Its body is aluminum with a white NBR (nitrile) rubber seal and rated to 16 bar. NBR offers good resistance to oils, fuels, and many hydrocarbons but has limited resistance to strong acids, strong alkalis, ketones (e.g., acetone), and some chlorinated solvents. Aluminum may corrode with strong acids, alkalis, or certain corrosive agents. For safe use in a particular chemical process, verify chemical compatibility of aluminum and NBR with the fluids, concentrations, temperatures, and exposure duration; if incompatible, consider alternative materials (e.g., stainless steel, EPDM, FKM).

Does the STORZ firefighter connector cap with lock and chain, aluminum come with different gasket materials for food or chemical use?

Yes. The STORZ firefighter connector cap with lock and chain, aluminum comes with a white NBR rubber seal as standard (suitable for general firefighting, irrigation, many chemical and food applications). The product description specifies Seal: white NBR rubber. NBR (nitrile rubber) is commonly used for resistance to oils, fuels and many chemicals and is acceptable for many food-contact applications depending on regulations and specific substances. If you need a gasket specifically certified for aggressive chemicals or strict food-contact standards (e.g., FDA/EC food-grade silicone, EPDM, Viton/FKM, or certified food-grade NBR), request confirmation from the supplier or manufacturer about available gasket options and certifications. Provide the exact chemical or food-contact requirements so they can advise on compatibility, certification (FDA/EC/USP), and any recommended alternative gasket materials.

STORZ firefighter connector cap with lock and chain, aluminum

All products, Symmetrical claw couplings/

Additional information

Material	AL – aluminum

STORZ cap, equipped with a lock and chain to prevent loss, intended for transmission installations for liquid and bulk substances. Used in firefighting, irrigation systems, chemical industry, food industry, agriculture, etc. With a symmetrical design of the connecting part, it easily connects with each other. Elements with the same hook spacing can be connected. Material: aluminum. Working pressure: 16 bar. Seal: white NBR rubber.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
ST-31-500066-11	STORZ cap 66 mm with lock (individual key), Al	-	16
ST-31-500081-11	STORZ blind cap 81 mm with lock (individual key), Al	-	16
ST-31-500089-11	STORZ blind cap 89 mm with lock (individual key), Al	-	16
ST-31-500105-11	STORZ blind cap 105 mm with lock (individual key), Al	-	16
ST-31-500115-11	STORZ blind cap 115 mm with lock (individual key), Al	-	16
ST-31-500133-11	STORZ blind cap 133 mm with lock (individual key), Al	-	16
ST-31-500148-11	STORZ blind cap 148 mm with lock (individual key), Al	-	16
ST-31-500160-11	STORZ blind cap 160 mm with lock (individual key), Al	-	16

STORZ cap, equipped with a lock and chain to prevent loss, intended for transmission installations for liquid and bulk substances. Used in firefighting, irrigation systems, chemical industry, food industry, agriculture, etc. With a symmetrical design of the connecting part, it easily connects with each other. Elements with the same hook spacing can be connected. Material: aluminum. Working pressure: 16 bar. Seal: white NBR rubber.