PTFE-Rubber Composite Gasket | PTFE Flat Washer | High-Precision Chemical-Resistant Seal
Product Description
TECHNICAL PARAMETERS
| Category | Details |
| Product Name | PTFE-Rubber Composite Gasket |
| Part Number | 271955476 |
| Material | Composite: PTFE (white, low-friction layer) + NBR/FKM rubber (black, elastic sealing layer); Pure PTFE variant available |
| Color | White (PTFE) + Black (rubber) / Solid white (pure PTFE) |
| Core Functions | Dual-layer sealing, chemical resistance, low friction, leak prevention, vibration damping |
| Design Feature | Circular flat structure with embedded rubber O-ring (composite type); Solid PTFE flat washer (single type) |
| Application | Hydraulic systems, chemical processing equipment, automotive fuel systems, pneumatic valves, food/pharmaceutical machinery |
Advantages
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Dual-Layer Synergy (Composite Type): PTFE’s chemical resistance + rubber’s elastic sealing create a leak-proof barrier for both static and low-dynamic applications, outperforming single-material gaskets.
Extreme Chemical Inertness: PTFE resists acids, alkalis, solvents, and petroleum-based fluids, suitable for food, pharmaceutical, and chemical processing.
Wide Temperature Tolerance: Operates from -200°C to 260°C, adapting to cryogenic and high-heat environments without performance loss.
Low Friction & Wear Resistance: PTFE surface minimizes friction between mating parts, reducing wear and extending assembly lifespan.
Precision Fit: Molded to exact dimensions for seamless installation in standard flanges/fasteners, eliminating fitment gaps and leakage risks
Applications:
- Seals hydraulic/pneumatic valve flanges and cylinder end caps, preventing fluid/gas leakage and maintaining pressure stability.
- Provides chemical-resistant sealing in industrial pipelines and reactors, protecting against corrosive media in chemical processing.
- Seals automotive fuel system components (e.g., fuel injectors, filters), resisting gasoline/diesel corrosion and ensuring leak-proof operation.
- Acts as a low-friction washer in fastener assemblies, reducing torque loss and preventing galling between metal parts.
- Delivers hygienic sealing in food/pharmaceutical machinery (PTFE variant), complying with FDA/EU food contact standards.
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