All GIR products are made from pharmaceutical grade silicone.
Where are you right now?Here in the USA, or just about anywhere else in the world?Fahrenheit Celsius
OUR SILICONE PRODUCTS ARE:
Heat proof to
Heat resistant to
Lab tested to decomposition at
is a very conservative estimate for the the heat resistance of GIR's silicone. In fact, all of our tools will perform admirably at temperatures higher than that - the food-safe silicone we use is not readily combustible, and does not melt or drip. It may discolor around 550-570°F290-300°C or so, with prolonged exposure.
Why not higher?
Aren't there silicone spatulas with temperatures like 600°F 315°C or 700°F370°C listed on the packaging?
Many manufacturers' claims about this aspect of their materials are misleading. There's no special "secret formula" silicone that is food safe but more heat-safe than the rest of the pack. In fact, silicone cooking tools that cite resistance to temperatures like 600°F315°C of 700°F370°C are basing that claim on conditions that really cant't occur outside a lab. Great for marketing, but not so good if you actually want consumers to know the product's true performance limits... say, in a searing hot wok or pan.
Here's the deal:
Food-grade silicone products that claim higher
heat resistance are simply citing results of
lab tests like thermogravimetric analysis
(TGA) conducted in inert nitrogen or
argon gas. The presence of oxygen (like, in
every kitchen on planet earth) will typically
cause partial oxidation above 572°F300°C so that's about where degradation (or technically, "weight
loss" as a result of depolymerization) will start to
occur at a rapid rate.
To sum it all up,
we're confident in saying 464°F240°C for prolonged heavy-duty exposure, and we know that science is on our side. Truth is, you could take it much higher if you're willing to test the limits, with some risk of discoloration if you're too bold and it hangs around +550°F +290°C for too long.
We use a fiberglass core to give our tools strength and heft, which has the added benefit of low heat retention (unlike metal). We're not saying that they can't ever get hot - stick 'em in a pot of boiling sauce for a few minutes and yes, the contact areas will heat up. But they won't retain that heat for long, and won't transmit it along the handle.
So if you're using them in a hot skillet and want to turn around for a minute or two, you can do so with little worry. We simply want to qualify the claim of heat resistance with a request that everyone exercises a bit of common sense when testing the limits.
Really want to get into it?
Thermally Stable Elastomers: A Review
By Robert A Rhein of the Naval Weapons Center China Lake, CA
United States FDA Regulations
- All our materials are FDA approved as food-safe! Check out 21 CFR Section 177.2600
- A representative sample of an analogous product to our silicone rubber met the requirements of USP Class VI (maximum contact time with human tissue 28 days) and ISO 10993 under Good Laboratory Practices (GLP). When we say "pharmaceutical grade," we mean it.
- Listed as UL 94 HB
European Union Food Regulations
- The composition of this product has been positively assessed according to French Arrêté of 25 November 1992 on silicone elastomers intended to come into contact with foodstuffs (Arrêté Ministériel du 25 novembre 1992 relatif aux matériaux et objets en élastomères de silicone mis ou destinés à être mis au contact desdenrées, produits et boissons alimentaires)
- The composition of this product has been positively assessed according to German BfR Recommendation XV on Silicone for food contact (BfR-Empfehlungen XV zu Silicone)
- WRAS approved (BS 6920)
- KTW approved