GCE Rubber Hoses-Bulk ISO3821 - Single Oxygen (blue) Rubber hose for use with Oxygen cutting and welding and allied processes. Not suitable for LPG, MPS and CNG. Technical Data Inner tube: Synthetic rubber resistant to the welding gases Reinforcement: High tensile synthetic textile. External cover: Blue synthetic rubber resistant to abrasion and weather Smooth surface Temperature: -20°C / +60°C Safety factor: 3 : 1 Marking: In compliance with the below mentioned standard. Working pressure: 20 bar Bursting pressure: 60 bar Standards: ISO 3821 Art. Nr. ∅ int ∅ ext Coil RH001000-050 4 mm 11 mm 50 m 272063035204 6,3 mm 12,3 mm 20 m 272063035404 6,3 mm 12,3 mm 40 m RH004000-050 6,3 mm 13,3 mm 50 m RH005000-050 6,3 mm 16,3 mm 50 m RH006000-050 8 mm 15 mm 50 m RH007000-050 9 mm 16 mm 50 m 272100035200 10 mm 17 mm 20 m 272100035400 10 mm 17 mm 40 m RH008000-050 10 mm 17 mm 50 m The full length may be a combination of max two short lengths. According to standards the rubber hoses do not expire. It‘s reasonable to replace them periodically according to their wear and the common sense.