Tubing for simple oil and grease systems is rated by size and pressure.
CUTUBEAN is 4mm (5/32") OD annealed copper tube, burst pressure 120 bar (1740psi) and is used for PDU and low pressure oil systems where a solid tube is preferred.
135179W is 4mm (5/32") OD flexible clear nylon tube, burst pressure 80 Bar (1160psi) and is used in low pressure oil systems or for post PDU feed lines where a flexible tube is preferred.
152823 is 4mm (5/32") OD semi rigid UV stabilised black nylon tube rated to 140 Bar (2030) psi and pre-filled with grease. Commonly used with multiline greasing systems such as Interlube 'AC', 'AX' & 'XGS' systems on trucks and outdoor plant requiring a stiff UV resistant tube. Grease prefill significantly cuts down commissioning time.
152058 is 5mm black nylon tubing, burst pressure 20 bar (290psi) used for air connections to Interlube 'XGS' pumps.