Cutting ring fittings

 according to EN ISO 8434-1 / DIN 2353

  • series LL, L and S
  • Ø 4 to 42 mm
  • nominal pressure up to 800 bar
  • -196°C to +400°C, up to +600° on request
  • with FKM seal or metallic sealing


Characteristics, specialities

• according to ISO 8434-1/DIN 2353
• series LL, L and S
• non-corrosive
• wide assortment


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

Nominal pressure PN

100 to 800 bar, details see product table (safety factor 4)

Temperature range

-196°C to +400°C, up to +600°C on request
Excepted are FKM-sealed fittings (suppl. "WD") and fittings with taper (suppl. "KO"), which can be used only in a range from -20°C up to +200°C.

Leak rate with helium

10-6 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



Pressure coefficient % of PN