Brand: YILONG
Product Name: Modified / Filled PTFE
Operating Temperature: Typically –200 °C to +260 °C (depends on filler formulation)
Forms Available: Sheets, rods, tubes, molded parts, CNC machined components
Packaging: Pallet, Wooden Box
Description
Filled PTFE is a modified form of Polytetrafluoroethylene (PTFE) produced by incorporating selected fillers into virgin PTFE resin to enhance its mechanical, thermal, electrical, and wear properties.
Virgin PTFE offers outstanding chemical resistance, wide service temperature range, and extremely low friction. However, its inherent softness and tendency to creep under load limit its use in high-pressure or dynamic applications. These limitations can be effectively overcome by adding functional fillers.
Common fillers for PTFE include:
glass fiber, glass microsphere, carbon, graphite, bronze, stainless steel, molybdenum disulfide, polyimide, silica, barium sulfate, calcium fluoride, alumina, and other inorganic or polymer-based fillers.
Features
Improved compressive strength and load-bearing capacity
Reduced creep and cold flow compared with virgin PTFE
Enhanced wear and abrasion resistance
Low friction coefficient with self-lubricating behavior
Excellent chemical and corrosion resistance
Stable performance over a wide temperature range
Fillers can be tailored to application-specific demands
Applications
Static and dynamic seals, gaskets, valve seats
Bearings, bushings, wear pads, and sliding elements
Hydraulic and pneumatic components
Chemical processing and fluid-handling equipment
Food, pharmaceutical, and semiconductor machinery
Automotive, aerospace, and heavy industrial equipment
Technical Data Sheet
| Silica filled PTFE | |
| ü Creep Relaxation | ü Hydrocarbons, Solvents, Chlorine |
| ü Reduced Emissions | ü Water & Steam, Cryogenics Material |
| ü Min Cold Flow Problems | ü Strong Acids |
| ü Improved Sealing Performance | |
| Barium Sulfate Filled PTFE | |
| ü Excellent Bolt Torque Retention | ü Chlorine, Gases &Steam |
| ü Sealing Performance Better Virgin PTFE | ü Strong Acids & Moderate Acids |
| ü Reduced Emissions & Creep Relaxation | ü Hydrocarbons & Aluminum Fluoride |
| Glass Micro-spheres Filled PTFE | |
| ü Mini Cold Flow Problems | ü Cryogenics Material, Hydrogen Peroxide |
| ü Reduce Creep Relaxation | ü Medium Concentrations of Acids & Caustics |
| ü Improved Sealing Performance | ü Hydrocarbons, Solvents, Water, Refrigerants |
| ü Reduced Product Loss &Emissions | |
| Carbon filled PTFE (25%~35%) | |
| ü High compressive strength | ü Water&Steam Applications |
| ü Improved wear resistance under load&permanent deformation | ü Vessel Openings, Pipe & Flanges Joint |
| ü Better thermal & electrical conductivity | ü Highly Concentrated Hydrofluoric Acid |
| ü In Hydrogen Fluoride: Heat Ex-changers | |
| Graphite filled PTFE(15%) | |
| ü High compressive strength | ü Highly Concentrated Hydrofluoric Acid |
| ü Improved wear resistance under load&permanent deformation | ü Volatile Hazardous Air Pollutants (VHAP) |
| ü Better thermal& electrical conductivity. | |
| ü Good chemical resistance | |
| ü Improved frictional properties | |
| Polyimide Filled PTFE (5%~20%) | |
| ü Good Thermal Conductivity & Wear | ü Automotive &Textile Industry |
| ü Superior Wear & Coefficient of Friction | ü Rotary& Reciprocating Seals |
| ü Excellent Sliding & Electrical Insulation | ü Lip Seals Bearings, Valve Seat |
| ü Resist Chemical & Machining Properties | ü Food & Medical industry Processing |
| ü Softer Mating Surface Steel |Aluminum | ü Mechanical & Precision Engineering |
| ü Low Cold Flow & Wide Temperature Range | ü Bushings, Piston Rings, Chain Guides |
| ü Stop-start Sockets Constructive Parts | |
| MoS2 Filled PTFE (10%~20%) | |
| ü Self-lubrication in presence of apolar gas | ü Medium Concentrations of Acids |
| ü Low friction coefficient | ü Dynamic Seals, Piston Cup Seals |
| ü Good dimension stability and not fragile like ceramic | ü Slide Covers, Bearings, Refrigerants |
| ü Retained high dielectric performance in presence of improved thermal and electrical conductivity | ü Bushings, Glide Rings, Back-up Rings |
| ü Hydrocarbons, Solvents, Water, Seats | |
| ü Cryogenics Material, Hydrogen Peroxide | |
| Peek Filled PTFE (15%) | |
| ü High compressive strength | ü Ring Seals, Piston Ring |Bearings |
| ü Excellent chemical resistance | ü Semiconductor, Electronics Oil & Gas |
| ü Outstanding mechanical properties at elevated temp. | ü Precision Part, Sheet, Bushings, Tube |
| ü Good wear resistance | ü Chemical Technology, Automotive Industry |
No.3, Mianzhi Street, Zhucheng, Shandong, China
Copyright © 2026 YILONG GROUP All Rights Reserved. Powered by Hicheng
