непортящийся

1) General subject: imperishable, incorrupt, incorruptible, indefectible

2) Naval: fool-proof

3) Engineering: non-fouling

4) Food industry: unspoilable

5) Business: non-perishable, nonperishable, storable

6) Quality control: foul-proof, nonfouling

7) Makarov: indefectible (и т.п.)