I have a Micromatic Double Gauge regulator that I’ve used for almost 12 years. It’s part # 642-2 but I don’t think they make the exact one still but I’m sure their newer ones are very similar. Well this entire time, I’ve been using the nylon washers that my homebrew shop had which look like the right one in the pic below (left is the old one). Well I had a slow leak with my previous tank and even after replacing the washer with the new tank, I had a slow leak at that connection (confirmed with soapy water test). I was able to really tighten the nut enough that I don't think it's leaking anymore. I see that with Micromatic’s current regulators the replacement part is PTFE Inlet Seal# 3200086-N, which looks like other washers I’ve seen on ebay. Is that what I should use with mine (or the original Micromatic part)? Have I been using the wrong washer this entire time I've had the regulator?
Micromatic:
Ebay:
Micromatic:
Ebay:
