Is the VKA cap (carbon steel, zincânickel) compatible with standard DIN 2353 M nuts and NBR Oârings under highâpressure hydraulic systems?

Yes . the VKA cap (carbon steel, zincânickel) is compatible with standard DIN 2353 M nuts and NBR Oârings for highâpressure hydraulic systems, with the following confirmations and considerations: - Sealing geometry: The VKA cap uses the 24Â° cone specified by DIN 2353 and is explicitly described as âwith NBR Oâring,â so it mates correctly with DIN 2353 M nut faces and the common NBR seal interface. - Mechanical fit: The cap is stated to be âCompatible with DIN 2353 nut type M,â so thread and cone dimensions conform to the standard and will seat properly under recommended tightening torques. - Materials and surface: Carbon steel base with zincânickel coating (6â10 Âµm) provides strong corrosion protection (up to 720 hours in salt spray) and adequate mechanical strength for highâpressure applications typical of DIN 2353 fittings. - Series choice: Available in L (light) and S (heavy) series . choose S for higher duty or more demanding pressure/axial-load conditions per system requirements. - Elastomer compatibility: NBR Oârings are suitable for many hydraulic fluids and typical pressure/temperature ranges; verify that system fluid, temperature, and any contaminants are compatible with NBR. For extreme temperatures or aggressive fluids, consider alternative elastomers. - Installation caution: Use correct DIN 2353 tightening procedures to ensure proper cone seating and Oâring compression. Inspect for damage and use specified torque to avoid leaks or deformation. Summary: The VKA cap (carbon steel, zincânickel) is compatible with DIN 2353 M nuts and NBR Oârings for highâpressure hydraulics when installed per DIN 2353 practices and when NBR is suitable for the system fluid and temperature.

Can the VKA cap (carbon steel, zincânickel) maintain sealing with NBR Oârings at low temperatures?

Yes - the VKA cap (carbon steel, zincânickel) with NBR Oârings can maintain sealing at moderately low temperatures, but with limits. NBR remains flexible and seals well down to about â30Â°C to â40Â°C depending on formulation and Oâring crossâsection; below that it stiffens, risking leakage. The zincânickel coating and 24Â° cone DIN 2353 geometry provide robust metal contact and corrosion resistance, but reliable sealing at low temps depends on: correct Oâring hardness (shore A; softer grades seal better cold), proper gland/assembly, and avoiding temperatures below the specific NBR compoundâs glass transition. For colder service consider FKM/FFKM or lowâtemperature elastomers.

Does the VKA cap, carbon steel zincânickel, resist corrosion in marine or coastal environments?

Yes. the VKA cap, carbon steel, zincânickel provides strong corrosion resistance suitable for marine or coastal environments. The zincânickel surface coating (6â10 Âµm) is rated for very high corrosion resistance. up to 720 hours without corrosion in a salt spray chamber. which indicates excellent protection against saltâladen atmospheres typical of coastal and many marine applications. The carbon steel base plus the robust zincânickel plating and the NBR oâring (sealing the 24Â° cone) together reduce the risk of galvanic and uniform corrosion and help maintain a reliable seal. Caveats: prolonged direct immersion in seawater, highly aggressive splash zones, or environments with severe mechanical wear, chemical exposure, or constant humidity may still accelerate degradation over time. For critical longâterm marine exposure or submersion, consider additional protections (e.g., stainless steel alternatives, sacrificial anodes, more frequent inspections, or supplementary coatings).

Cap VKA, carbon steel, zinc-nickel

Additional information

Material	CS – steel (cast iron)

Cap DIN 2353, type VKA: 24° cone DIN 2353 with an O-ring NBR. Compatible with nut DIN 2353 type M. 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-VKA-06L-S-CN	Cap DIN 2353 6L/S, Zn-Ni	-	630	In stock	Enquiry
HD-VKA-08L-S-CN	Cap DIN 2353 8L/S, Zn-Ni	-	630	In stock	Enquiry
HD-VKA-10L-S-CN	Cap DIN 2353 10L/S, Zn-Ni	-	630	In stock	Enquiry
HD-VKA-12L-S-CN	Cap DIN 2353 12L/S, Zn-Ni	-	630	In stock	Enquiry
HD-VKA-14S-CN	Cap DIN 2353 14S, Zn-Ni	-	630	In stock	Enquiry
HD-VKA-15L-CN	Cap DIN 2353 15L, Zn-Ni	-	315	In stock	Enquiry
HD-VKA-16S-CN	Cap DIN 2353 16S, Zn-Ni	-	400	In stock	Enquiry
HD-VKA-18L-CN	Cap DIN 2353 18L, Zn-Ni	-	315	In stock	Enquiry
HD-VKA-20S-CN	Cap DIN 2353 20S, Zn-Ni	-	400	In stock	Enquiry
HD-VKA-22L-CN	Cap DIN 2353 22L, Zn-Ni	-	160	In stock	Enquiry
HD-VKA-25S-CN	Cap DIN 2353 25S, Zn-Ni	-	400	In stock	Enquiry
HD-VKA-28L-CN	Cap DIN 2353 28L, Zn-Ni	-	160	In stock	Enquiry
HD-VKA-30S-CN	Cap DIN 2353 30S, Zn-Ni	-	400	In stock	Enquiry
HD-VKA-35L-CN	Cap DIN 2353 35L, Zn-Ni	-	160	In stock	Enquiry
HD-VKA-38S-CN	Cap DIN 2353 38S, Zn-Ni	-	315	In stock	Enquiry
HD-VKA-42L-CN	Cap DIN 2353 42L, Zn-Ni	-	160	In stock	Enquiry

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Cap DIN 2353, type VKA: 24° cone DIN 2353 with an O-ring NBR. Compatible with nut DIN 2353 type M. 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.