Is the STORZ firefighter connector with hose end, aluminum suitable for chemical and food applications given its NBR rubber seal and aluminum body?

Short answer: Possibly, but with important limitations. The STORZ firefighter connector with hose end, aluminum is used across firefighting, irrigation, chemical and food industries and features aluminum body plus NBR (nitrile) rubber seals (white in forged, black in cast). That makes it broadly compatible with many liquids and bulk substances, including oils, fuels, and many aqueous solutions. Its aluminium construction gives good flow and light weight; forged versions handle up to 16 bar, cast up to 6 bar. However, suitability for specific chemical and food applications depends on: - Chemical compatibility: NBR resists hydrocarbons, oils and many aqueous media but is not resistant to strong oxidizers, ketones (acetone), some esters, strong acids/alkalis and certain solvents. Aluminium can corrode with strong acids/alkalis and some chloride-containing solutions. - Food contact: NBR is not inherently a food-grade elastomer unless specifically certified; white color does not guarantee food approval. Aluminium may require surface treatment or specific alloy/certification for food contact. - Operating conditions: Temperature range of NBR (~-30Â°C to +100Â°C typical) and pressure limits (6 or 16 bar) must match your process. - Cleaning/sanitation: NBR may absorb flavors/odors and can be damaged by aggressive CIP chemicals (hot caustic, oxidizers). Recommendation: For any chemical or food application, verify material certifications and chemical-resistance data from the manufacturer for the exact NBR compound and aluminium alloy used. If food-grade or aggressive chemicals are involved, request food-contact certification (e.g., FDA/EU), specific chemical compatibility charts, or consider alternative seals (EPDM, FKM) and stainless-steel fittings designed for food/chemical service.

Can the STORZ firefighter connector with hose end, aluminum be used with potable liquids and food-grade products despite its NBR seal?

Yes - the STORZ firefighter connector with hose end, aluminum can be used with potable liquids and food-grade products only if the NBR (nitrile) seal meets food-contact approvals for your jurisdiction. NBR is commonly used in food and beverage applications but not all NBR compounds are formulated or certified for potable water/food use. For forged couplings the seal is white NBR (and for cast it is black NBR); you must confirm the specific compoundâs certification (e.g., FDA, EU Regulation 10/2011, WRAS, KTW) and suitability for temperature, pH and chemical exposure of your product. If certifications are absent, request a food-grade or FDA-compliant elastomer alternative before using with potable or food-grade liquids.

Does the STORZ firefighter connector with hose end, aluminum resist corrosion in saltwater or marine environments?

The STORZ firefighter connector with hose end, aluminum is suitable for many fluid-transfer applications but aluminum has limited inherent corrosion resistance in saltwater or marine environments. Marine exposure (salt spray, chloride ions) accelerates pitting and galvanic corrosion of aluminum, especially if the alloy, surface treatment, or protective coatings are not specifically formulated for seawater service. Key points from the product description relevant to marine use: - Material: aluminum. lightweight and common for couplings, but not stainless-level corrosion resistance in marine conditions. - Two strength versions: forged (up to 16 bar) and cast (up to 6 bar). forging alone does not guarantee improved saltwater corrosion resistance. - Seals: NBR rubber (white or black). NBR resists oils and many chemicals but has only moderate resistance to prolonged seawater immersion and UV. Practical conclusion: - The STORZ firefighter connector with hose end, aluminum is not specifically described as marine-grade or corrosion-resistant for saltwater. For regular or prolonged marine exposure, stainless steel (e.g., AISI 316) or aluminum parts with proven marine-grade coatings/anodizing and appropriate alloy specification are recommended. If you must use this aluminum STORZ in marine settings, request manufacturer confirmation of alloy, surface treatment (anodizing, plating, or inhibitor coatings), and perform corrosion protection measures (isolating fittings from dissimilar metals, sacrificial anodes, regular rinsing and maintenance).

STORZ firefighter connector with hose end, aluminum

All products, Symmetrical claw couplings/

Additional information

Material	AL – aluminum

STORZ coupling with hose end designed for transmission installations for liquid and bulk substances. Used in firefighting, irrigation systems, chemical industry, food industry, agriculture, etc. Characterized by a large, unobstructed diameter of flow. With a symmetrical design of the connecting part, allowing for easy connection. Elements with the same spacing of hooks can be connected. Available in forged version with a working pressure of up to 16 bar and in cast version, characterized by significantly lower strength with a working pressure of up to 6 bar. Material: aluminum. Working pressure: 16 bar (forged couplings), 6 bar (cast couplings). Seal: white NBR rubber (forged couplings), black NBR rubber (cast couplings).

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
ST-12-031025-11	STORZ connector 31 mm with end for hose 25 mm, Al	25	16
ST-12-031025-US	STORZ connector 31 mm with end for hose 25 mm, aluminum casting	25	6
ST-12-044025-11	STORZ connector 44 mm with end for 25 mm hose, Al	25	16
ST-12-044032-11	STORZ connector 44 mm with end for 32 mm hose, Al	32	16
ST-12-051025-11	STORZ connector 51 mm with end for hose 25 mm, Al	25	16
ST-12-051032-11	STORZ connector 51 mm with end for hose 32 mm, Al	32	16
ST-12-051038-11	STORZ coupling 51 mm with end for hose 38 mm, Al	38	16
ST-12-066019-11	STORZ connector 66 mm with end for 19 mm hose, Al	20	16
ST-12-066025-11	STORZ connector 66 mm with end for 25 mm hose, Al	25	16
ST-12-066028-11	STORZ connector 66 mm with end for 28 mm hose, Al	28	16
ST-12-066032-11	STORZ connector 66 mm with end for hose 32 mm, Al	32	16
ST-12-066032-21	STORZ connector 66 mm with end for 32 mm hose, aluminum casting	32	6
ST-12-066038-11	STORZ connector 66 mm with end for 38 mm hose, Al	38	16
ST-12-066038-US	STORZ connector 66 mm with end for hose 38 mm, aluminum casting	38	6
ST-12-066040-11	STORZ connector 66 mm with end for 40 mm hose, Al	40	16
ST-12-066042-11	STORZ connector 66 mm with end for hose 42 mm, Al	40	16
ST-12-066042-21	STORZ connector 66 mm with end for hose 42 mm, aluminum casting	40	6
ST-12-066045-11	STORZ connector 66 mm with end for hose 45 mm, Al	45	16
ST-12-066045-21	STORZ connector 66 mm with end for 45 mm hose, aluminum casting	45	6
ST-12-066050-11	STORZ connector 66 mm with end for hose 50 mm, Al	50	16
ST-12-066052-11	STORZ connector 66 mm with end for hose 52 mm, Al	50	16
ST-12-066052-US	STORZ connector 66 mm with end for hose 52 mm, aluminum casting	50	6
ST-12-066055-11	STORZ connector 66 mm with end for hose 55 mm, Al	55	16
ST-12-066060-11	STORZ connector 66 mm with end for hose 60 mm, Al	60	16
ST-12-081038-11	STORZ connector 81 mm with end for 38 mm hose, Al	38	16
ST-12-081052-11	STORZ connector 81 mm with end for hose 52 mm, Al	50	16
ST-12-081063-11	STORZ connector 81 mm with end for 63 mm hose, Al	65	16
ST-12-081065-11	STORZ connector 81 mm with end for hose 65 mm, Al	65	16
ST-12-081070-11	STORZ connector 81 mm with end for hose 70 mm, Al	70	16
ST-12-081075-11	STORZ connector 81 mm with end for hose 75 mm, Al	75	16
ST-12-089052-11	STORZ connector 89 mm with end for hose 52 mm, Al	50	16
ST-12-089065-11	STORZ connector 89 mm with hose end 65 mm, Al	65	16
ST-12-089065-21	STORZ connector 89 mm with end for hose 65 mm, aluminum casting	65	6
ST-12-089070-11	STORZ connector 89 mm with hose end 70 mm, Al	70	16
ST-12-089075-11	STORZ connector 89 mm with end for hose 75 mm, Al	75	16
ST-12-089075-US	STORZ connector 89 mm with end for 75 mm hose, aluminum casting	75	6
ST-12-089080-11	STORZ connector 89 mm with end for hose 80 mm, Al	80	16
ST-12-105075-11	STORZ connector 105 mm with end for hose 75 mm, Al	75	16
ST-12-105090-11	STORZ connector 105 mm with end for hose 90 mm, Al	90	16
ST-12-115100-11	STORZ connector 115 mm with end for hose 100 mm, Al	100	16
ST-12-133090-11	STORZ connector 133 mm with hose end 90 mm, Al	90	16
ST-12-133090-US	STORZ connector 133 mm with end for hose 90 mm, aluminum casting	90	6
ST-12-133100-11	STORZ connector 133 mm with end for hose 100 mm, Al	100	16
ST-12-133100-US	STORZ connector 133 mm with end for hose 100 mm, aluminum casting	100	6
ST-12-133110-11	STORZ connector 133 mm with end for hose 110 mm, Al	110	16
ST-12-133110-US	STORZ connector 133 mm with end for hose 110 mm, aluminum casting	110	6
ST-12-133125-11	STORZ connector 133 mm with end for hose 125 mm, Al	125	16
ST-12-148125-11	STORZ connector 148 mm with end for hose 125 mm, Al	125	16
ST-12-160150-11	STORZ connector 160 mm with end for hose 150 mm, Al	150	16
ST-12-220205-11	STORZ connector 220 mm with hose end 205 mm, Al	200	10
ST-12-278258-11	STORZ connector 278 mm with hose end 258 mm, Al	250	10

STORZ coupling with hose end designed for transmission installations for liquid and bulk substances. Used in firefighting, irrigation systems, chemical industry, food industry, agriculture, etc. Characterized by a large, unobstructed diameter of flow. With a symmetrical design of the connecting part, allowing for easy connection. Elements with the same spacing of hooks can be connected. Available in forged version with a working pressure of up to 16 bar and in cast version, characterized by significantly lower strength with a working pressure of up to 6 bar. Material: aluminum. Working pressure: 16 bar (forged couplings), 6 bar (cast couplings). Seal: white NBR rubber (forged couplings), black NBR rubber (cast couplings).