Is fluoroelastomer better than polyacrylate?
Both handle heat. Both resist oil. But when it comes to sealing performance, longevity, and chemical resistance—how do fluoroelastomer and polyacrylate really compare? Fluoroelastomer (FKM) offers better overall performance than polyacrylate rubber (ACM) in high-temperature, chemical, and fuel-exposed environments, but it also comes at a higher cost. Comparison of fluoroelastomer and polyacrylate seals I’ve helped […]
What is the difference between silicone and fluoroelastomer?
Both resist heat. Both are rubbers. But not all high-performance elastomers are created equal. Silicone and fluoroelastomer may look similar—but choosing the wrong one can wreck a sealing system. The main difference is that silicone offers excellent flexibility and temperature resistance, while fluoroelastomer (FKM) provides superior chemical and fuel resistance. Silicone gasket vs FKM O-ring […]
What is a fluoroelastomer seal?
Some seals handle steam. Some handle oil. But only a fluoroelastomer seal can handle both—plus fuels, chemicals, and extreme heat—without breaking down. A fluoroelastomer seal is a high-performance rubber component made from FKM (fluoroelastomer) designed to resist heat, oils, fuels, and chemicals in static or dynamic sealing applications. Fluoroelastomer shaft seal In our production line, […]
Is fluoroelastomer the same as Viton?
Many engineers ask this during material selection: “Is Viton just another name for fluoroelastomer?” The answer is both yes—and not exactly. Viton is a brand of fluoroelastomer rubber developed by DuPont (now Chemours). While all Viton is fluoroelastomer (FKM), not all fluoroelastomer is Viton. Viton O-ring vs unbranded fluoroelastomer In our factory, we’re often asked […]
Is fluoroelastomer rubber food safe?
It resists chemicals. It handles high heat. But can fluoroelastomer be trusted near food? Many engineers assume performance equals safety—but that’s not always true. Not all fluoroelastomer rubber is food safe. Only FDA- or EU-compliant grades specifically formulated for food contact can be used in food processing environments. Fluoroelastomer gasket for food valve I’ve had […]
What surface finish for static seals?
Even the best rubber can’t seal against a rough or pitted surface. I’ve seen it many times—great seal, wrong flange finish, and still a leak. The surface finish for static seals should generally fall between 32 to 63 RMS (36 to 70 Ra). A 32 RMS finish is often preferred for balancing sealing performance and […]
Is a gasket a dynamic seal?
It seals. It sits between parts. But is a gasket really dynamic? I’ve had many customers confused by this simple-looking component—especially when motion gets involved. No, a gasket is not a dynamic seal. Gaskets are designed for static applications where there is no relative movement between the sealing surfaces. Flat rubber gasket used as static […]
What is the difference between static and dynamic seals?
A seal is a seal—until it leaks. That’s when knowing the difference between static and dynamic seals becomes more than theory. It becomes the key to getting your system right the first time. The main difference is that static seals are used between two non-moving parts, while dynamic seals work between parts that move relative […]
What is the purpose of a dynamic seal?
Moving parts leak. That’s just physics—unless a dynamic seal is doing its job. If your system involves shafts, rods, or pistons in motion, you need more than just rubber squeezed between parts. The purpose of a dynamic seal is to prevent fluid or gas leakage between components that move relative to each other, such as […]
What is a dynamic seal?
When parts move, leaks follow—unless you have the right seal in place. That’s where dynamic seals come in. They work where static seals fail. A dynamic seal is a sealing element designed to prevent fluid or gas leakage between parts that move relative to each other, such as rotating shafts or reciprocating pistons. Dynamic seal […]
