NOK Corp. (TYO:7240), a major manufacturer of oil seals, posted sales of around 713,138,000,000 yen ($6.29 billion) for the fiscal year ending March 2017, representing a year-on-year decline of 4.4 percent. Meanwhile, operating profit was down 17.6 percent year-on-year to 39,776,000,000 yen, ordinary income dropped 14.9 percent to 45.79 billion yen, and net income for the year fell 9.1 percent…