Generic ORKIT-NBR-419 419-piece NBR-70 nitrile O-ring kit, metric + AS568 imperial sizes in divided plastic box. Used in general machinery assembly, structural steelwork and pressure-boundary flanged joints per DIN, ISO and ASME B18 dimensional standards. MSHA grade nitrile.; Standards: ISO 3601, DIN standard, ISO parts, ISO 3601-1; HS code: 7318.29; IMPA: 691901.