Bottom line: Momentive makes quality silicone materials, but “Momentive products” is a family of chemistries, not a single SKU—and the first thing to fix isn’t the brand, it’s the spec.

I’ve placed more than 60 silicone and rubber orders in the last two years for the company office I manage. The failures I’ve seen were almost never because someone picked the wrong brand; they were because someone picked the wrong material type. Get the data sheet right first, then choose a brand.

I’m an office administrator for a 140-person engineering company. I handle ordering for office supplies, sample materials, and small-run rubber and silicone components—roughly $180,000 a year across eight vendors. I report to both operations and finance. That doesn’t make me a chemist. It makes me the person who has to turn material choices into purchase orders, and I’ve made enough mistakes to know where the real risk lives.

Where I Start Before Brand

When I took over purchasing in 2020, I honestly thought “silicone” was one material. It isn’t. There is room-temperature-curing sealant, liquid silicone rubber for molding, high-consistency rubber for extrusion, and silicone foam for gaskets and cushioning. A wrong substitution can mean parts that won’t cure, won’t hold shape, or won’t meet temperature requirements.

One of the first things I check on a product family is whether it is condensation-cure or addition-cure. That sounds pretty geeky, but it changes the whole ordering conversation. If you use the wrong one around another material, it can dry slowly or not bond at all. The brand name doesn’t solve that. The part number does.

That’s why the search term “Momentive products” shows up from people looking for exactly one product, but a distributor shows them ten. Momentive’s product line goes back to GE Silicones, and most of the legacy part numbers are still in circulation. Let me rephrase that: when you see a 20-year-old spec sheet that says GE grade, the Momentive equivalent is usually close, but it’s not always obvious from the product name.

What “Momentive Products” Usually Means on a Buyer’s Screen

When I search for “Momentive products” from a buyer’s desk, I’m typically looking for one of those four. The rest is basically marketing, packaging, or project-specific details.

What Counts as Momentive Silicone News for a Purchaser?

The Momentive silicone news that actually changes my orders is boring: discontinued grades, packaging changes, and distributor updates. I’ve had two instances in 2024 where a part number was still listed online, but the authorized distributor didn’t stock it. So “news” to me means checking current product availability before I write a PO, not just reading a press release.

I do check Momentive’s official site now and then, but I put more weight on the distributor’s stock system. You’ll get better information from one phone call to an authorized rep than from three hours of internet searching. Plus, distributors are usually the ones who know when a material is being replaced by a newer grade.

Here’s something vendors won’t tell you: “standard turnaround” often includes buffer time designed to manage their production queue. It’s not necessarily how long your order takes. If you need material by a hard date, say so early and confirm in writing.

Silicone Straws and the Food-Grade Trap

Silicone straws are usually made from liquid silicone rubber. I’ve ordered custom silicone straws for our office kitchen and for a client event. The two words that matter are “food contact” and “material data sheet.” A vendor can say “food grade” until the cows come home, but I need to see a material certificate or an FDA/Food-contact compliance statement. Per the FTC Green Guides (ftc.gov), environmental claims like “recyclable” must be substantiated, and I use that same skepticism for any claim printed on packaging.

Another thing about silicone straws: if the packaging says they are dishwasher-safe, the temperature rating matters. Most LSR handles boiling water, but a molded-in hinge can fracture after repeated stress. That’s the kind of detail that doesn’t show up in a product photo.

If a supplier won’t share documentation for something as simple as a straw, that’s a red flag. It also becomes a billing problem when finance rejects an expense report because the line item doesn’t match the product on the invoice. A vendor who couldn’t provide proper invoicing cost us $2,400 in rejected expenses. That number still makes me wince.

Santoprene Rubber vs. Silicone: Not the Same Family

Another search term that lands on my desk is Santoprene rubber. Santoprene is a thermoplastic vulcanizate (TPV), not a silicone, and the brand is now under Celanese. I use silicone when the part needs to stay flexible at extreme temperatures and hold up over years of aging. I consider Santoprene when cycle time and part cost matter more and the temperature window is less aggressive.

Price per unit is where Santoprene often wins. TPV processes faster in injection molding because the crosslinks are already formed. Silicone can be worth the premium when you need low-temperature flexibility around -60°C or long-term weathering. But again, check the data sheet—there are silicone grades that handle all kinds of extreme conditions if you pay for them.

Both can be perfectly good. The polite answer is “it depends”; the buyer’s answer is “send me both data sheets and let the engineer decide.” Don’t let anyone push you into a brand before you’ve matched the polymer to the application.

Can a Cricut Cut Foam Board? Yes, but That’s a Different Foam

The search “can a Cricut cut foam board” is the oddball that shows up next to silicone and rubber searches, and it’s worth a quick answer. The answer is yes, with the right blade and multiple passes, on thin foam board—usually up to about 3 mm. But that’s craft foam board: polystyrene or PVC sheet with paper faces. It is not silicone foam.

Momentive does make silicone foam, used for gaskets, thermal barriers, and padding. It’s a precision material with specified density, compression, and temperature range. Would I run a sheet of silicone foam through a Cricut? Not unless it’s very thin. The tackiness and rebound make it fight the blade motion. If you need custom silicone gaskets, order them cut from a supplier instead of forcing a craft tool to work.

I mention this because material names collide all the time. The word “foam” is doing a lot of work. Your Cricut might cut foam board, a foam-rubber sheet, or even thin silicone foam if you are patient and use a fresh blade. But the project requirements come first. A decorative cut for a display doesn’t need a material certificate. A gasket for a heated chamber does. Those are two very different purchases.

How I Buy Momentive Products Without Overpaying

I don’t always buy brand-name. Actually, let me rephrase that: I still write the brand I want first, because it’s easier to come down from a known reference. But I don’t accept “authorized distributor” as a reason to skip verification.

The process that cut our rubber and silicone ordering headaches by maybe 40%: confirm the material type, confirm the cure system, ask for a data sheet, ask for a certificate, then compare price. That order matters. Price means nothing if the material can’t perform.

Ask for samples before you commit to a large order. Most reputable suppliers have sample programs. If they charge for a sample, that’s not automatically a bad sign—it can keep time-wasters away—but the cost should be reasonable and usually credited toward a later order. I’ve had good luck with that in 2024.

One more thing: the first quote is rarely the final price for ongoing relationships. Vendors leave room when you order consistently and pay on time. In our 2024 vendor consolidation project, that quiet negotiation saved about 12% on a repeating gasket order.

Don’t let shipping talk distract you either. According to USPS pricing effective January 2025 (usps.com), a First-Class Mail letter is $0.73. That’s for documents, not a rubber sample. If a vendor quotes a $35 “handling fee” for a 100-gram swatch, challenge it.

Where Brand Loyalty Has Limits

I have mixed feelings about brand-name requirements. On one hand, Momentive’s chemistry documentation is usually excellent, and that matters if a product fails. On the other hand, a brand won’t fix a wrong material choice. If the real need is a cheap disposable gasket that has to survive a mild chemical wipe, a generic silicone or even Santoprene rubber might be the better business call. Don’t make the brand the hero. The application is the hero.

At least, that’s been my experience across 60+ orders. Bottom line: the best Momentive product isn’t “the best Momentive product.” It’s the one that matches your application, comes with proper documentation, and fits the vendor relationship you can trust.

One last boundary note: this is buying guidance, not engineering advice. I’m not a chemist, and I still send spec sheets to a senior engineer when I’m outside my comfort zone. Product availability and pricing change, so verify current data on Momentive’s site or with an authorized distributor before you budget.