Fluoroplastic materials (mainly PTFE, PFA, FEP, PVDF) are widely used in sealing components due to their excellent corrosion resistance, high and low temperature resistance, low friction, and non‑stick properties. Below are clear definitions and applications of Ring, Sealing, and Gasket.
Fluoroplastic Ring:
Fluoroplastic Sealing:
A general term for all components and systems that achieve sealing function, including rings, gaskets, lip seals, packings, encapsulated seals, etc.
Fluoroplastic Gasket:
A flat sealing component used between flanges, covers, or fixed joints for static sealing
ETFE Resin (Ethylene-Tetrafluoroethylene Copolymer)
Ring
ETFE rings offer high mechanical strength, toughness, and excellent wear resistance. They are widely used as backup rings, support rings, and wear rings in hydraulic and pneumatic systems, especially where high extrusion resistance is required.
Sealing
ETFE sealing parts perform well in dynamic and static sealing applications. They provide good chemical resistance and excellent radiation resistance, making them suitable for automotive, fluid control, and general industrial sealing systems.
Gasket
ETFE gaskets are used in medium-pressure flange and equipment sealing. They combine good rigidity and processability, suitable for applications requiring both chemical stability and mechanical durability.
FEP Resin (Fluorinated Ethylene Propylene Copolymer)
Ring
FEP rings are often used for O‑rings, shaped rings, and encapsulated sealing rings. They can be molded and melted easily, providing smooth surfaces and consistent non‑stick properties, ideal for low‑friction and clean‑service sealing.
Sealing
FEP is widely used for liner seals, encapsulated seals, and special shaped seals. It offers excellent chemical resistance and can be processed by injection molding, widely used in pharmaceutical, food, and semiconductor sealing systems.
Gasket
FEP gaskets and FEP‑encapsulated gaskets provide reliable static sealing for flanges, valves, and containers. They are widely used in highly corrosive and hygienic applications.
PFA Resin (Perfluoroalkoxy Resin)
Ring
PFA sealing rings are used in high‑purity, high‑temperature, and ultra‑corrosive environments. They have excellent creep resistance and thermal stability, commonly used in precision mechanical seals, valve stem seals, and semiconductor sealing rings.
Sealing
PFA is the premium choice for critical sealing systems. It performs well in both dynamic and static sealing, with outstanding chemical inertness and high‑temperature resistance up to 260°C, widely used in chemical, pharmaceutical, and semiconductor equipment.
Gasket
PFA gaskets and molded gaskets are used in high‑end flange sealing under extreme conditions: high temperature, strong corrosion, and high purity. They provide long‑term sealing reliability in harsh industrial environments.
Fluoroplastic Ring&Sealing&Gasket Raw Materials & Resin Processing
Fluoroplastic Ring&Sealing&Gasket FAQ
What is the difference between Ring, Sealing and Gasket?
- Ring: Precision annular component, used for rotary or reciprocating dynamic sealing and static sealing.
- Sealing: General term for all sealing parts and systems.
- Gasket: Flat gasket used for flange and fixed joint static sealing.
What materials are commonly used?
What are the advantages of filled fluoroplastics?
Are they suitable for food and pharmaceutical industries?
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