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One-piece reinforced PTFE gasket, also known as an integral one-piece reinforced PTFE flange gasket, is machined from a single solid piece of pure PTFE. The gasket features two integral horizontal support ribs molded into the interior, distinguishing it from ordinary flat PTFE gaskets and metal-reinforced PTFE gaskets. By relying on its own rib structure to rigidity, it significantly improves the cold flow and extrusion leakage issues of pure PTFE under pressure. The entire gasket is made of pure PTFE without layers or metal cores, offering universal corrosion resistance cleanliness without leaching, and suitability for medium-to-high pressure acid and alkali corrosion-resistant flange sealing. It is widely used in the chemical, electroplating, pharmaceutical, and food industries with all DN sizes available in stock and support for non-standard custom shapes.
Overall base material: Pure polytetrafluoroethylene (PTFE) The entire sheet is integrally formed by CNC turning of a single molded PTFE sheet without bonding, without outer cladding, and without a metal skeleton. The entire body is made of PTFE material, eliminating the risk of media penetration and corrosion of the interlayer. Core structure:-in straight reinforcement ribs (differentiated selling point) Two parallel transverse raised ribs (straight ribs) are integrally machined on the inner side of the gasket ring; the ribs the gasket body are made of the same material and are seamless and integral. When the bolts are tightened, the ribs bear the pressure, limiting the outward creep and extrusion of the gasket structurally solving the common problems of high-pressure gasket displacement and leakage in ordinary flat PTFE gaskets. Sealing surface The inner and outer sides of the gasket have flat sealing surfaces which fit tightly with RF (raised face) and MFM (machined face) flanges, making them compatible with conventional steel, FRP, and plastic anti-corrosion flanges
Comparison with Ordinary Reinforced PTFE Gaskets and Flat PTFE Gaskets Comparison with Ordinary Flat PTFE Gaskets Ordinary flat PTFE gaskets a supporting structure, leading to compression deformation and cold flow leakage under slightly higher pressure; the I-rib gasket features a built-in supporting rib, improving compression and creep resistance times over, ensuring stability and no leakage under medium to high-pressure conditions. Comparison with Metal-Reinforced PTFE Gaskets The outer layer of a reinforced gasket wraps a/fiber core with thin PTFE, making it easy for media to penetrate and corrode the internal core material; the I-rib gasket is integrally molded from pure PTFE throughout, no interlayer and no metal, making it suitable for high-purity, highly corrosive, and clean food/pharmaceutical environments, preventing core material contamination of the media. IV Core Product Advantages (E-commerce Selling Points) Integral I-rib, anti-cold flow and non-extrusion The integrally molded supporting rib disperses the compression, preventing collapse and outward overflow under long-term pressure, ensuring a long-lasting and stable seal, and reducing frequent replacement costs. Pure PTFE throughout, strong corrosion resistance to media Resistant to strong acids, strong alkalis, oxidants, various organic solvents, and electrolytes; universally compatible with all corrosive media from pH 0-14, and reacts with no chemicals. Clean and non-toxic, suitable for food and pharmaceuticals No metal, no asbestos, and no filled interlayers; no harmful substances leach out, meeting clean production, making it the preferred choice for pharmaceutical, food, and high-purity fluid pipelines. Wide temperature range Long-term operating temperature of -200°C 260°C; stable for use in alternating hot and cold conditions, cryogenic liquid nitrogen, and high-temperature corrosion-resistant environments. Non-stick flange, installation and removal PTFE's low friction prevents sticking to the flange end face, leaving no residue during maintenance and disassembly, and is easy to clean without damaging the flange surface. No risk of delamination or cracking Integrally machined and molded, it eliminates the problems of delamination in reinforced gaskets and PTFE membrane rupture/leakage, resulting in longer service life.
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