what are the plastic lids made of? While the product description says the lids are BPA-free, it does not list what type of plastic the lids are made of. There could be various other additives not explicitly listed, and knowing the type of plastic used on the lids is important for us.Is there a number inside a recycling triangle printed anywhere on the lids, or mentioned anywhere on the box?Finally, it seems there is a rubber seal inside each lid -- what is that made of?If anyone knows or can point to someone who does I'd appreciate it. It is rather odd that some manufacturers go to great lengths to not have the plastic type stamped on their lids.TIA for any information on this. what are the plastic lids made of? While the product description says the lids are BPA-free, it does not list what type of plastic the lids are made of. There could be various other additives not... » Read More what are the plastic lids made of? While the product description says the lids are BPA-free, it does not list what type of plastic the lids are made of. There could be various other additives not explicitly listed, and knowing the type of plastic used on the lids is important for us.Is there a number inside a recycling triangle printed anywhere on the lids, or mentioned anywhere on the box?Finally, it seems there is a rubber seal inside each lid -- what is that made of?If anyone knows or can point to someone who does I'd appreciate it. It is rather odd that some manufacturers go to great lengths to not have the plastic type stamped on their lids.TIA for any information on this. « Show Less
1989650
Ocean Breeze, I have this newest Snapware Glasslock set (just bought 2 on sale at Costco for $24 each on Friday, 8/31). The # imprinted on the lids (visible under one of the flaps that snap the lid down) is 5. I just looked at my old set(s) (bought at Costco within the last 2-3 years) and they also read "5." I just googled it ("which #'s of plastic are safe/unsafe?") and the first hit indicates that #'s 2,4, & 5 are the safest. Here's the link:http://ecovillagegreen.com/1812/what-are-safe-plastic-numbers-to-use/
1662388
The jar and lid are both plastic. I don't see anything that mentions the composition of the plastic. I don't even see the PETE #1 that Walter mentioned.
1542718
A doctor recommended Glasslock or LocknLock. Some of the reviews made me want to stick with the Pyrex.The Anchor Hocking lids that I have crack and don't say "BPA free". It's been a while since I bought them. But my many Pyrex lids that are just as old are all fine except one.
637363
I do not see any markings that indicate that these lids are BPA-free. The bigger concern is the composition of the glass itself. Corning divested its interests in 1998 and, with that, the original formula of borosilicate glass was changed to soda-lime glass, a cheaper and more volatile composition. http://en.wikipedia.org/wiki/Pyrex. I have both the original and current version of these ribbed glass storage bowls. The earlier is heavier and will likely outlast the modern version by generations.
1609493
I am not sure if the lids are BPA free. I bought them as a gift for someone. I never opened the box.
1070369
The inner seal seems to be the usual "rubber" seal. I don't know, because they do not say. I would guess that it is a man made material, just because real rubber is not used much any more. The seal does seem to be the usual seal that you would see in any lid with a seal.
2206229
Lids are made from BPA-free polypropylene and have a silicone seal. Ideal situation, of course, would be no plastic. But as long as the food rests safely in the glass portion, it's about as good as it gets. Wean Greens and Glasslocks are simply awesome!
1101171
I second Sylwia's post. The lid may not be BPA free. That typed, the stuff they use to replace BPA is just as bad as BPA, so if it's a concern for you, I'd recommend going with something that is stainless steel all the way.
1255274
This has 2 pieces. Plastic lid top with a rubber ring to seal then you have to use a metal screw band (sold separately) to screw it down. You can use theses for storage in the fridge or dry storage, but I like the Ball plastic storage caps...(they are just 1 piece/(BPA free) for storage use. Hope this helped.
1463693
Since they are NOT made in the US, (these are from Italy) they are not obligated to tell you if they are or are not BPA free. I checked my lids and other than saying dishwasher safe (upper rack) there is no other information. I don't use the lids in the microwave if that is the big concern. I would err on the safe side and tell you not to use the lids in heated situations and not put in dishwasher until you are sure. I still love these containers and freeze soups in them and reheat in same, but I also don't have kids and I know that is a big concern for young people being exposed to BPA. Wish I could help more. Since they are NOT made in the US, (these are from Italy) they are not obligated to tell you if they are or are not BPA free. I checked my lids and other than saying dishwasher safe (upper rack) there is no other information. I don't use the lids in the microwave if that is the big concern. I would err on the safe side and tell you not to use the lids in heated situations and not put in dishwasher until you are sure. I still love these containers and freeze soups in them and reheat in same, but I also don't have kids and I know that is a big concern for young people being exposed to BPA.... » Read More Since they are NOT made in the US, (these are from Italy) they are not obligated to tell you if they are or are not BPA free. I checked my lids and other than saying dishwasher safe (upper rack) there is no other information. I don't use the lids in the microwave if that is the big concern. I would err on the safe side and tell you not to use the lids in heated situations and not put in dishwasher until you are sure. I still love these containers and freeze soups in them and reheat in same, but I also don't have kids and I know that is a big concern for young people being exposed to BPA. Wish I could help more. « Show Less
2251732
I agree with Nathans answer. Only item to have BPA would be plastic lids. And it is clearly stated BPA free.
1041143
NEW INFORMATION. I wrote directly to Libbey Glass and asked the question. Here is the response I got pasted from their reply: "Thank you for contacting Libbey glass. The material is BPA free. It is a polyethylene material." I can believe this; the material behaves like polyethylene of which there are many versions, and polyethylene is used in many medical implanted devices as well as a great deal of hospital equipment, e.g. IV bags and tubes and also in public water supplies. It's okay. This is my previous comment: The plastic parts are definitely NOT silicone. I've not yet been able to determine for certain what they are. I'm intrigued by Erika's comment suggesting there are two versions of the jar, one of which may have a silicone seal. The ones I received from Amazon do not have silicone seals, but polyethylene is perfectly safe in my opinion.
1442062
It says that it isn't made from bpa (most things arne't anymore), its polyethelene/eva 50/50 so no harmful stuff, fda approved... basically what most flexiable waterbottles are made of(these days)... Bisphenol A is only in polycarbonate, so most canned goods, most water bottles from before 2008, and oddly enough battery casing and epoxy... It is weird that they used to use it for baby bottles, but i wouldn't worry about this product...
419049
What plastic exactly? It mentions BPA free, but are there any other bisphenols used? BPS, perhaps? Where can we get the exact list of chemicals? Any certifications from a European consumer safety authority?
2076576
Oh Good question! I believe so. The lid is a number 5 plastic (polypropylene) and from my quick search on the internet it is BPA free. But then again I am getting my info from the internet... :-) Hope this helps!
1350911
The question about the caps is irrelevant for its application, because there is a semi-transparent liner embedded in each cap that comes in contact with the glass bottle throat, thereby creating the seal. I understand from something I recall reading that material does not contain BPA (Bisphenol A) which is believed to cause cancer. The black cap material itself is rigid and sturdy, and holds the semi-transparent liner. I will say that I do not believe these caps - or the glass bottles they stop - are intended for intense heat. Therefore, when you say "Penolic resin are thermosetting materials - you cannot re-melt it," it's a puzzling question in the context of the represented intended use of these caps. The question about the caps is irrelevant for its application, because there is a semi-transparent liner embedded in each cap that comes in contact with the glass bottle throat, thereby creating the seal. I understand from something I recall reading that material does not contain BPA (Bisphenol A) which is believed to cause cancer. The black cap material itself is rigid and sturdy, and holds the semi-transparent liner. I will say that I do not believe these caps - or the glass bottles they stop - are intended for intense heat. Therefore, when you say "Penolic resin are thermosetting... » Read More The question about the caps is irrelevant for its application, because there is a semi-transparent liner embedded in each cap that comes in contact with the glass bottle throat, thereby creating the seal. I understand from something I recall reading that material does not contain BPA (Bisphenol A) which is believed to cause cancer. The black cap material itself is rigid and sturdy, and holds the semi-transparent liner. I will say that I do not believe these caps - or the glass bottles they stop - are intended for intense heat. Therefore, when you say "Penolic resin are thermosetting materials - you cannot re-melt it," it's a puzzling question in the context of the represented intended use of these caps. « Show Less
1980281
From my experience, the lids have proven NOT to be rodent proof. Some lids are clear, and are more transparent and thinner. Some I've found are of tougher material. The bottom line is, I believe that there will continue to be rodent damage if there is no change of materials used. The clear lids may be more vulnerable. I did get online, and spoke so someone who answers PetCo questions, and she saidthat there is no response that replacement lids will be available for purchase. WHAT!?? If the vittle fault is intact, and all I need is a LID, why not make replacement lids??? ~Valerie From my experience, the lids have proven NOT to be rodent proof. Some lids are clear, and are more transparent and thinner. Some I've found are of tougher material. The bottom line is, I believe that there will continue to be rodent damage if there is no change of materials used. The clear lids may be more vulnerable. I did get online, and spoke so someone who answers PetCo questions, and she saidthat there is no response that replacement lids will be available for purchase. WHAT!?? If the vittle fault is intact, and all I need is a LID, why not make replacement lids??? ~Valerie