NC clamping ring fittings

based on EN ISO 8434-1 / DIN 2353


Characteristics, specialities

• based on ISO 8434-1/DIN 2353
• series L and S
• Ø 6 bis 25 mm
• non-corrosive
• wide assortment
• nut inside silver-plated for easier and faster assembly


Stainless steel 1.4571 (≈ AISI 316 Ti),
Alloy X6CrNiMoTi17-12-2, DIN EN 10088-3

Male adaptor thread with metal seal or FKM profile sealing ring (other materials on request)

Nominal pressure PN

100 to 500 bar, details see product table (safety factor 4)

Temperature range

-196°C to +400°C
Excepted are FKM-sealed fittings (suppl. "WD"), which can be used from -20°C up to +200°C.

Leak rate with helium

10-8 mbar • l/s (when professionally assembed; see assembly instructions)


Up to 10-4 mbar, higher values are possible

Tubes to use

Seamless, cold-drawn, high precision stainless steel tubes (according to DIN EN 10216-5/EN ISO 1127 tolerance class D4/T4) with clean, smooth surface or plastic tubes. Outer diameter within ± 0,1 mm; exception: plastic tubes. See also chapter tubes and hoses. Other materials on request.

Inspection certificate

Inspection certificate 3.1 according to EN 10204



Application areas

Particularly suitable for highly corrosive hydraulic systems and installations

Pressure coefficient % of PN