Are they silicone or are they rubber? Silicone I got elsewhere have semi-translucent look to them that these don't & there was no identifying label.
347904
I dont know for sure but there is no semi-translucent look. I would say they are probably rubber.
1120659
I think they silicone... not sure since I do not use them. And I know they don't have an odor. Whichever comes with the official it is what it is. They don't snap and NO broken ones at all from what my daughter has told me.
1737451
Nope. They are fine after washing. I didn't notice any smell or taste from the silicone.
539344
They're made of silicone, not sure about if they're "professional grade" but we havent had any problems with them.
2161571
Pretty certain they are plastic, I can't check as they are all inside a lighting project but I am certain they were not ceramic. However, they work great and I am very happy with them.
1625850
They seem to be really hard plastic - or maybe really hard rubber (not sure)
198138
I would contact the company and ask. I'm guessing they are neoprene but that doesn't necessarily mean they are latex free. Contact the company to be sure.
1472682
Hi Scott, They are transparent. I must tell you though these things are very flimsy and the seal between the outside and inside is poor. Furthermore, there is no customer service as they are always sold through a 3rd party vendor.
2252371
They are shiny and thin but I don't have a clue if they are silicone or what they are made of
274961
They appear to be a #7 plastic, which according to the internet is a catch-all category which makes it difficult to know exactly what the composition is. BPA, etc, can not be ruled out from this category of plastics. I wish I had asked the same question. Otherwise the quality is very good.
268438
They are definitely not silicone. I am pretty sure they are polypropylene or LDPE. There is no identifying code on the bottom of the bottle, but there is a '5' on the inside of the cap. The look and feel is consistent with lab wash bottles made of those materials (I used to be a Chemist)
160367
They are made out of something other than ordinary plastic. Silicon is my best guess, they era so flimsy and difficult to handle I can't recommend them. If bpa is what you find in the cheapest of products...my guess is it's in these items.
1619842
I believe they are rubber, but I'm not sure what the exact materials are. I haven't noticed any loss of elasticity.
990439
They are not rubberized. They are made out of plastic but seem to work well.
671895
They are silicone. They are also a bit stretchy, so don't be concerned if they appear to be a little small for your jar.
545486
My guess is no. I say this because they came in a clear plastic bag with no labeling on the bag. They do work great and I am happy with the product.
1857483
No, they're not silicone but plastic that gets rather brittle when frozen. I've been running warm water on the back side, then drying off the water before twisting to release the cubes. With gentle care they're working well repeatedly for me.