Do these lids screw on or do they have have rubber gaskets to seal a 2 7/8 " opening?
1536971
They screw on and have a rubber gasket to seal them. But sometimes they get loose
2204314
The rings are rubber. I don't think they are pliable enough that they would seal a used metal lid.
1605231
they were intendedfor canning, but they will work as a regular sealing lid. lid needs to be fairly snug, but do not over tightenas it tends to deform gasket. also if jar seal edge and gasket are completely dry this may cause leakage. the gasket needs to slide on seal edge of jar so seal pressure. the only problems i have found is over tightening and dry on dry. one other thing is if it is not a canning style jar it may not seal, no matter what you do.
1560667
They do have a rubber seal around the edge, however the pour spout does not. If you turn the jar upside down to mix the contents, it will leak from the pour spout.
2185626
I am not sure, I bought mine quite a while ago and they are the standard lids on mine.
147192
It has a rubber gasket. The side holes for the hinge wire are too big and not in the right location. Seal is not tight, these will leak air!
339243
No they don't. I also have a devil of a time getting them to seal properly; they are, however, quite pretty. The larger amphora sizes can accomodate a ball ring/seal and I recommend that combo, rather than using the single piece lid they include.
980351
Neither. The lid fits on using a rubber gasket. Works great, no sign of any break down in the many years I have owned these.
2207544
The lids fit standard pint jars. My original lids that came with the jars were one piece with the rubber seal inside. So when I replaced them I needed both the screw on lid and the rubber seal piece I love these jars and beg for people to return them. Of course, some do and some don't. Very pretty jars IMHO.
2164767
The seal is rubber and the quality is such that you could use them for canning or food storage. Buy in confidence.
1228099
Yes it does have a rubber seal around the lid. It seems to be made very very well but I haven't had a chance to try it out yet.
1579443
Yes, they are. However, I still sealed everything up with a mylar bag before putting on the lid. They are very high quality buckets/lids that seal up very tight and once sealed, have a one time use pull strip to open them again. The lids will go on again without the pull strip...but I wouldn't think it would be air tight without that strip.
320017
There is no seal or rubber gasket per se to create a true airtight container. However, they do appear to be relatively air tight.
318756
Yes they do! I have had no issues with them sealing properly, quite pleased with the craftsmanship myself ma'am .
1482839
Yes - 3 lids; one with small holes, one with medium holes and then one with larger holes. They will screw onto a wide mouth canning jar.
164633
No. They do not have a rubber gasket that makes them leak proof; however, they work well for things like thick salad dressings, ketchup, mustard, mayo, etc. These are designed to hold small portions of food inside a tiffin to keep them separate (like say you have tomatoes you want to put on a salad or something like that) and are not really intended to be filled with liquid.
1579441
They certainly seem to be completely sealed. Either using the snap on, one time use lid or the more expensive gamma lid. I prefer the gamma so that access is available to the product stored with out the hassle of replacing the snap on lid.