Pyrex: Can It Be Used In The Oven?

The answer is yes; Pyrex is oven safe. This should be answered with a simple yes, but you need to […]

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The answer is yes; Pyrex is oven safe. This should be answered with a simple yes, but you need to know some specifics to get the whole story. The type of Pyrex that is oven safe is known as tempered glass, and it can endure heat as high as 450 degrees Fahrenheit. You will also want to use a cooking spray before using your piece of Pyrex for baking or broiling so that it does not stick and break into pieces when removing from the oven.

Glassware made out of Pyrex can be heated in an oven if several precautions are taken first; they should never be heated quickly, and you must make sure there’s no damage done beforehand, which could result in shards flying off during the healing process.



With the clear indication that Pyrex dishes can be safely used in ovens, let’s look at some safety care you should take when cooking with this glassware. You might also be curious about how to identify or use vintage Pyrex dishes if you do happen to come into possession of one. To help give your question more clarity and information, read ahead for what we’ve uncovered in this post.

What is Pyrex?

A type of dishware that is typically made from tempered glass and can withstand high heat, such as being placed in an oven or broiler for cooking food. It is safe for use on the stovetop but should not touch any direct flame. Glass dishes are also not recommended when microwaving foods due to sudden temperature changes (thermal shock).

How do I identify vintage Pyrex? Try looking for the word “pyrex” embossed into the bottom of the dishware, along with numbers near it denoting what year it was manufactured; if you find one without these markings, it is not vintage Pyrex and is likely broken.

Taking care when using Pyrex

There would be nothing worse than hearing the shattering of glass coming from your oven. Picture spending hours prepping a big feast only to have a piece of glassware explode inside, showering your whole meal with thousands of pieces of crushed glass. It can indeed happen when you bake with something like Pyrex, but following specific guidelines and being aware can keep it from happening.

Bring to room temperature

To prevent the glass in Pyrex from shattering, let it come to room temperature before you place it into your oven. If you cook with a dish the day before and store it overnight in the fridge, you can’t just pop it into the oven without letting it sit out first. This protects against thermal shock breaking up the inside of your perfectly prepared meal and setting off an explosion all over dinner.

Check for cracks

Improperly cared for Pyrex dishes may lead to cracks, chips, or other damage as time goes on. Before using the container for your intended purpose, scrutinize it and make sure there are no signs of wear or chip that would compromise its ability to be used in a high-temperature environment. Pyrex can withstand the temperature range of a regular oven. However, if your dish has any cracks or chips, it will shatter into pieces under the intense heat.

Be aware of oven temperature

Pyrex dishes are designed to withstand higher temperatures, but they have their limits. At the lower end of a typical oven’s temperature range, it should be safe for Pyrex cookware to be used inside the oven. Pyrex is safe to use in a conventional or convection oven as long as the temperature does not exceed what is approved for that type of oven.

Keep it off of the stovetop!

Pyrex is secure to use in an oven or microwave because the heat is spread evenly around the glass. However, this type of glassware should not be used on a gas burner because direct heat can cause it to expand and shatter.

TIP: If you’re using your own oven, remember to pre-heat it. And if you are a Pyrex fanatic and have multiple pieces of this glassware in the kitchen, store them carefully, so they don’t knock into one another while clanking around in cabinets or drawers unprotected.

What type of glass is Pyrex?

Pyrex is a tempered glass, which is very different from the window panes that used to be made out of regular plain old glass. Tempered is actually two sheets of clear glass with an inner layer in between them (typically blue or green), and it’s been heated and cooled down until they fused together into one single sheet.
The resulting product is much stronger than traditional dishware because you can’t crack it by dropping something heavy on top of it like you could with typical plate-glass windows. The Pyrex name comes from this new type of strong but lightweight material: “pyro” meaning heat; “Xena” meaning transparent – so Pyrex means “heat-transparent.”

  • In 1998, Pyrex changed its material for dish production – meaning they no longer used borosilicate glass but instead switched over to soda-lime. Here are some more clues:
  • After 1998, there is not always a raised back stamp on their dishes
  • They began using square corners in place of wedges (as seen on Bormioli Rocco products) or round edges (like Anchor Hocking Ware). This can be done with different colors too!
  • Ultimately, vintage Pyrex is the holy grail for collectors. There is a growing market for these pieces because they are so sought after and rare!

How to identify pyrex glass?

Is the vintage dish you’re considering buying at an estate sale Pyrex? May you’ll be able to figure it out by looking for a couple of tell-tale signs.

In 1915, Corning factories began using has a back stamp on the underside of their products to distinguish their dishware. When handling Pyrex cookware, the back stamp is often promoted instead of being stamped with ink. The raised back stamp is resistant to years of washing and resists scratches.



Determining the age of vintage Pyrex is difficult but possible. The number is a code that identifies the year and is printed on the bottom of the piece. If you don’t know what type of glass your cookware is made from, it’s challenging to identify when it was manufactured.

Can pyrex lids go in the oven?

The lid is safe in the oven, so long as it is not touching any food. Be sure to use a baking dish or casserole that will keep the heat away from the glass of your Pyrex dish if you want to put a lid on top for cooking.

In a recent post, we determined that lids and dishes are both safe to go in the oven after taking certain safety precautions. What about the outside of the Pyrex?



Are they heat resistant? Yes! Like nesting bowls, you can put lids and dishes in the oven without fear of them breaking or melting.

Can pyrex mixing bowls go in the oven?

Pyrex is a brand name that is well known for its glassware. This includes the mixing bowls, which have been made of borosilicate since 1915. It is safe to put these in your oven as long as you keep them away from any source of direct heat and they don’t come into contact with anything else inside the oven or microwave.

Check the back stamp on Pyrex dishware to ensure that oven-safe conditions are met. This is the same logo that is found on your Pyrex dishes and will indicate when it was manufactured. If you see any water spots, don’t worry! That is just proof of its authenticity. Like most things that go in the oven, Pyrex dishes are temperature-sensitive.

The mixing bowl will be safe to use in an oven only if it doesn’t come into contact with anything else inside the oven or microwave while heating up. Likewise, do not put this dish directly onto a stovetop burner where there is direct heat from a flame either because the glass can shatter due to rapid changes in temperature by expanding too quickly as opposed to gradual change over time. It will tell you on the label whether or not your dish is safe for use on your stovetop. Make sure to follow all surety forethoughts when handling any hot pots and pans, too.

Is it safe to use vintage Pyrex?

The only real thing is that you have to take additional care with vintage Pyrex because it can be more brittle than the newer kind of dish is. Be sure not to drop a hot word right into cold water and vice versa, for example. Also, you’ll want to avoid using metal utensils on your vintage Pyrex, as this could lead to chipping or scratching its surface.

In addition, some kinds of food are better-suited for glassware, so they won’t stick like their counterparts will when cooking in plastic or tin foil containers would. And don’t forget about those pesky stains! They might need special attention before being rewashed, too, if one is dealing with vintage Pyrex rather than newer Pyrex



Pyrex is dishware that is made of glass and is oven-safe. But is it safe to put vintage Pyrex in the oven? Generally speaking, any food you would cook can be cooked in a Pyrex dish or bowl so long as they are taken out before they become cold, or hot for that matter. The same goes for the lids! Things to keep your eye on are the vintage pieces is how brittle they may have become over time, which means using more caution when handling them, such as not dropping a hot dish into cold water in order to avoid shattering the piece altogether. Another essential tip is if cooking some kind of sticky food like rice where other types of containers might cause it to stick.

In closing

In closing, Pyrex is a popular type of glassware that has been used in kitchens for over one hundred years. With its durable construction, Pyrex can be used in ovens, whether conventional, convection, or microwave. Be sure to follow safety precautions when using Pyrex. Always use oven mitts when handling this cookware!

Pyrex is an American company that makes bakeable dishes made from borosilicate glass which is more resistant to thermal changes than other types of drinks on the market today.” Whether your dish is cooking with cold air or hot microwaves, again make sure you are using proper precautions like wearing protective gloves as we have discussed throughout our post.” Safety first!”.

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