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Tube Fittings
Single Ferrule Tube Fittings (DIN 2353)
Our single ferrule fittings are made to DIN 2353, the 24° cone bite-type design trusted on metro rolling stock and in hydraulic systems. As the nut is tightened, the hardened cutting ring bites into the tube and seals against the cone, sealing and gripping in a single action.
Standard
DIN 2353, ISO 8434-1
Pressure rating
Up to 630 bar
Materials
Carbon steel, stainless steel
Sizes
4 mm to 42 mm OD
Key features
A positive bite that seals and grips in one action, and holds through vibration and pressure surges
Cutting rings machined to close tolerances for a precise fit, and hardened by our proprietary heat treatment technology
Approved by leading metro operators and rolling stock builders, and in service on metro trains across India
Every lot traceable to the mill heat number, with EN 10204 3.1 certificates
Technical specifications
| Standard | DIN 2353, ISO 8434-1 |
|---|---|
| Series and tube sizes | LL (extra light): 4 mm to 12 mm OD L (light): 6 mm to 42 mm OD S (heavy): 8 mm to 38 mm OD |
| Pressure rating | LL: up to 100 bar L: up to 315 bar S: up to 630 bar |
| Temperature range | Steel: −40 °C to +120 °C Stainless steel: −60 °C to +400 °CWith elastomer seals, the seal's limit applies |
| Materials | Carbon steel and stainless steel |
| End connections | ThreadedBSPP, BSPT and NPTAdjustableSwivel nut, standpipe and locknut ends |
| Testing | Tested to ISO 8434-1 and ISO 19879Additional testsCyclic endurance to ISO 8434-5 · fire endurance · pull-out to IACS P2.11 · salt mist to ISO 9227 |
Configurations
Straight connector
Union
Elbow
Tee
Bulkhead
Reducer
Related products
TEQLOK™ fittings to ASTM F1387, rated to 6,000 psi.
Precision seamless tubing, matched to our fittings.
Clamps that hold tube and pipe runs firm against vibration.
Need a custom solution?
Send us your drawing or specification. Our engineers will work out the right part with you.
