Recently picked up a load of these LazorLite Nippon Micro filters. Is Nippon Micro distributed in the US anymore? Seems Nippon Micro is an OEM first fit product. I know the Lazorlite brand is long gone. They look well made. O-ring is either molded or swaged in place. Hermetically sealed to prevent storage rust or stuff getting inside filter. Made in Japan. And bright Shiny silver! Seems to work fine with no leaks or start up rattles. I’m guessing these are from the early 90’s or before.