Is the Straight reduction fitting KORO-L, carbon steel, zinc-nickel compatible with hydraulic fluids at up to 250Â°C?

Short answer: No . the Straight reduction fitting KORO-L, carbon steel, zinc-nickel is not suitable for hydraulic fluids at temperatures up to 250Â°C. Reasoning: The product description specifies a DIN 2353 24Â° socket with Oâring, internal and external metric threads, made of carbon steel with a zincânickel plating (6â10 Âµm). Zincânickel coatings and typical elastomer Oârings used in DIN 2353 fittings are not rated for continuous exposure to 250Â°C. Zincânickel plating provides excellent corrosion resistance but degrades well below 250Â°C; most zincâbased platings begin to lose protective properties and can oxidize or discolor at elevated temperatures (generally recommended use <200Â°C). Likewise, common Oâring materials for hydraulic fittings (NBR, FKM/Viton, etc.) have maximum continuous service temperatures typically in the range ~100â200Â°C (Viton up to â200â250Â°C short term, often lower for sustained use). Carbon steel as a base material can withstand higher temperatures mechanically, but the assemblyâs sealing elements and the zincânickel surface treatment make the overall fitting unsuitable for reliable sealing and corrosion protection at 250Â°C. If you require fittings for hydraulic fluids at or near 250Â°C, specify highâtemperature materials and seals (e.g., stainless steel body, highâtemperature metallic seals or highâtemperature elastomers specified for 250Â°C, and a surface finish rated for that temperature) and confirm compatibility with the specific hydraulic fluid.

Does the Straight reduction fitting KORO-L, carbon steel, zinc-nickel require special maintenance to preserve its 720-hour salt spray resistance?

No special maintenance is required to preserve the 720âhour salt spray resistance of the Straight reduction fitting KOROâL, carbon steel, zincânickel Format under normal use. The zincânickel coating (6â10 Âµm) provides very high corrosion protection; to maintain performance, avoid mechanical damage to the coating, prevent prolonged exposure to aggressive chemicals that could attack the plating, and ensure proper installation to avoid scratches or wear. Routine visual inspections and standard cleanliness (removing contaminants, moisture, or abrasive particles) are sufficient. Damaged or heavily worn fittings should be replaced to retain corrosion resistance.

Can the Straight reduction fitting KORO-L, carbon steel, zinc-nickel be used in marine environments with continuous salt exposure?

Straight reduction fitting KORO-L, carbon steel, zinc-nickel Format shows strong corrosion protection for aggressive environments, but whether it is suitable for continuous salt (marine) exposure depends on operating conditions. Why itâs promising: - Zincânickel coating (6â10 Âµm) provides very high corrosion resistance. tested up to 720 hours without corrosion in a salt spray chamber (typically NSS/ASTM B117). which is significantly better than standard zinc coatings and indicates good resistance to chloride attack. - The 24Â° DIN 2353 socket with Oâring and carbon steel base ensure mechanical strength and reliable sealing when installed correctly, reducing crevice corrosion risks at joints. Caveats and practical considerations: - Salt spray test performance (720 h) is a useful benchmark but does not fully replicate real marine service (continuous wetting, splash, temperature cycles, biological fouling, galvanic couples). - Continuous immersion in seawater or highly splashâexposed locations accelerates corrosion compared with intermittent exposure. Carbon steel, even with zincânickel plating, will eventually corrode if coating is damaged or compromised. - Pay attention to installation: threaded connections, assembly torque, Oâring condition, and any damage to the coating create sites for corrosion onset. - Galvanic corrosion risk: when connected to dissimilar metals (e.g., stainless steel, copper), ensure proper isolation or compatible materials to avoid accelerated attack. - Maintenance and inspection: for truly continuous salt exposure, periodic inspection and potential reâcoating or replacement schedules are recommended. Recommendation: Straight reduction fitting KORO-L, carbon steel, zinc-nickel Format is suitable for many marine and offshore applications, especially where high saltâspray resistance is required, but for continuous seawater immersion or critically corrosive marine environments consider additional measures: confirm application specifics with the manufacturer, evaluate using full marine exposure testing, use protective barriers/isolation against galvanic contact, and implement regular inspection/maintenance. For the most aggressive continuous seawater service, consider fittings in a more inherently corrosionâresistant base material (e.g., stainless steel or duplex) as an alternative.

Fitting straight reducing KORO-L, carbon steel, zinc-nickel

Q: Does the Straight reduction fitting KORO-L, carbon steel, zinc-nickel require special maintenance to preserve its 720-hour salt spray resistance?

No special maintenance is required to preserve the 720âhour salt spray resistance of the Straight reduction fitting KOROâL, carbon steel, zincânickel Format under normal use. The zincânickel coating (6â10 Âµm) provides very high corrosion protection; to maintain performance, avoid mechanical damage to the coating, prevent prolonged exposure to aggressive chemicals that could attack the plating, and ensure proper installation to avoid scratches or wear. Routine visual inspections and standard cleanliness (removing contaminants, moisture, or abrasive particles) are sufficient. Damaged or heavily worn fittings should be replaced to retain corrosion resistance.

Fitting straight reducing KORO-L, carbon steel, zinc-nickel

Additional information

Material	CS – steel (cast iron)
Standard length [m]	10, 2.44

Fitting DIN 2353 straight reducing, type KORO-L series light: 24° DIN 2353 socket with an O-ring with metric female thread and with metric male thread. Available as: L (series light), S (series heavy). Surface coated with zinc-nickel with a layer thickness of 6-10 µm, which offers very high corrosion resistance (up to 720 hours without corrosion in a salt spray chamber). Material: carbon steel, zinc-nickel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HD-KORO-06L-CN	Fitting DIN 2353 KORO 6L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-08-06L-CN	Fitting DIN 2353 KORO 8/6L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-08L-CN	Fitting DIN 2353 KORO 8L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-10-06L-CN	Fitting DIN 2353 KORO 10/6L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-10-08L-CN	Fitting DIN 2353 KORO 10/8L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-10L-08S-CN	Fitting DIN 2353 KORO 10L/8S, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-10L-CN	Fitting DIN 2353 KORO 10L, Zn-Ni	-	500	In stock	Enquiry
HD-KORO-12-06L-CN	Fitting DIN 2353 KORO 12/6L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-12-08L-CN	Fitting DIN 2353 KORO 12/8L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-12-10L-CN	Fitting DIN 2353 KORO 12/10L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-12L-06S-CN	Fitting DIN 2353 KORO 12L/6S, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-12L-08S-CN	Fitting DIN 2353 KORO 12L/8S, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-12L-CN	Fitting DIN 2353 KORO 12L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15-06L-CN	Fitting DIN 2353 KORO 15/6L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15-08L-CN	Fitting DIN 2353 KORO 15/8L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15-10L-CN	Fitting DIN 2353 KORO 15/10L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15-12L-CN	Fitting DIN 2353 KORO 15/12L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15L-08S-CN	Fitting DIN 2353 KORO 15L/8S, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-15L-CN	Fitting DIN 2353 KORO 15L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18-06L-CN	Fitting DIN 2353 KORO 18/6L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18-08L-CN	Fitting DIN 2353 KORO 18/8L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18-10L-CN	Fitting DIN 2353 KORO 18/10L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18-12L-CN	Fitting DIN 2353 KORO 18/12L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18-15L-CN	Fitting DIN 2353 KORO 18/15L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18L-08S-CN	Fitting DIN 2353 KORO 18L/8S, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-18L-CN	Fitting DIN 2353 KORO 18L, Zn-Ni	-	400	In stock	Enquiry
HD-KORO-22-06L-CN	Fitting DIN 2353 KORO 22/6L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22-08L-CN	Fitting DIN 2353 KORO 22/8L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22-10L-CN	Fitting DIN 2353 KORO 22/10L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22-12L-CN	Fitting DIN 2353 KORO 22/12L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22-15L-CN	Fitting DIN 2353 KORO 22/15L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22-18L-CN	Fitting DIN 2353 KORO 22/18L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-22L-CN	Fitting DIN 2353 KORO 22L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-08L-CN	Fitting DIN 2353 KORO 28/8L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-10L-CN	Fitting DIN 2353 KORO 28/10L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-12L-CN	Fitting DIN 2353 KORO 28/12L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-15L-CN	Fitting DIN 2353 KORO 28/15L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-18L-CN	Fitting DIN 2353 KORO 28/18L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28-22L-CN	Fitting DIN 2353 KORO 28/22L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28L-16S-CN	Fitting DIN 2353 KORO 28L/16S, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28L-20S-CN	Fitting DIN 2353 KORO 28L/20S, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-28L-CN	Fitting DIN 2353 KORO 28L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-10L-CN	Fitting DIN 2353 KORO 35/10L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-12L-CN	Fitting DIN 2353 KORO 35/12L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-15L-CN	Fitting DIN 2353 KORO 35/15L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-18L-CN	Fitting DIN 2353 KORO 35/18L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-22L-CN	Fitting DIN 2353 KORO 35/22L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35-28L-CN	Fitting DIN 2353 KORO 35/28L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-35L-CN	Fitting DIN 2353 KORO 35L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-10L-CN	Fitting DIN 2353 KORO 42/10L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-12L-CN	Fitting DIN 2353 KORO 42/12L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-15L-CN	Fitting DIN 2353 KORO 42/15L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-18L-CN	Fitting DIN 2353 KORO 42/18L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-22L-CN	Fitting DIN 2353 KORO 42/22L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-28L-CN	Fitting DIN 2353 KORO 42/28L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42-35L-CN	Fitting DIN 2353 KORO 42/35L, Zn-Ni	-	250	In stock	Enquiry
HD-KORO-42L-CN	Fitting DIN 2353 KORO 42L, Zn-Ni	-	250	In stock	Enquiry

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Fitting DIN 2353 straight reducing, type KORO-L series light: 24° DIN 2353 socket with an O-ring with metric female thread and with metric male thread. Available as: L (series light), S (series heavy). Surface coated with zinc-nickel with a layer thickness of 6-10 µm, which offers very high corrosion resistance (up to 720 hours without corrosion in a salt spray chamber). Material: carbon steel, zinc-nickel.