Major manufacturer of oil seals NOK Corp. (TYO:7240) posted first quarter sales of 147.11 billion yen ($1.454 billion) for April–June, representing a year-on-year decline of 16.5 percent. Operating profit, meanwhile, plummeted 96.8 percent, dropping down to 377 million yen. Furthermore, after having enjoyed pretax profits of 15.263 billion yen for the same period in 2015, this year NOK has reported…