{"id":377,"date":"2026-01-22T02:21:47","date_gmt":"2026-01-22T02:21:47","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material&p=377"},"modified":"2026-03-17T17:56:52","modified_gmt":"2026-03-17T09:56:52","slug":"ptfe-teflon","status":"publish","type":"material","link":"https:\/\/www.jccncmachining.com\/fr\/materials\/ptfe-teflon\/","title":{"rendered":"PTFE (T\u00e9flon)"},"content":{"rendered":"

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Available PTFE (Teflon) Grades<\/h3>\n\n\n\n\n\n\n\n\n
Nuance<\/th>\nNom courant<\/th>\nCaract\u00e9ristiques cl\u00e9s<\/th>\nApplications typiques<\/th>\n<\/tr>\n<\/thead>\n
PTFE vierge<\/strong><\/td>\nNuance \u00e9lectrique<\/td>\nPure white. Excellent chemical resistance, electrical insulation, and lowest friction. FDA compliant.<\/td>\nChemical seals, electrical insulators, medical tubing, food processing parts.<\/td>\n<\/tr>\n
PTFE m\u00e9canique<\/strong><\/td>\nPTFE retrait\u00e9<\/td>\nMade from recycled resin. Lower tensile strength and purity but more cost-effective. Not FDA compliant.<\/td>\nEntretoises non critiques, rondelles, patins d'usure.<\/td>\n<\/tr>\n
PTFE charg\u00e9 de verre<\/strong><\/td>\n15% \/ 25% Glass<\/td>\nReinforced with glass fibers to improve compressive strength and reduce cold flow (creep).<\/td>\nValve seats, gaskets, piston rings, structural chemical parts.<\/td>\n<\/tr>\n
PTFE charg\u00e9 de bronze<\/strong><\/td>\nQualit\u00e9 roulement<\/td>\nBronze powder added for superior wear resistance and thermal conductivity. Higher friction than virgin.<\/td>\nHydraulic cylinder guides, bearings, slider plates.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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PTFE Machining Capabilities<\/h3>\n\n\n\n\n\n\n\n\n
Capacit\u00e9<\/th>\nDescription technique<\/th>\nAvantage Jucheng<\/th>\n<\/tr>\n<\/thead>\n
Complex Seal Turning<\/strong><\/td>\nMachining intricate lip profiles and grooves for hydraulic and pneumatic seals.<\/td>\nOur specialized lathe setups ensure burr-free cuts, critical for maintaining a perfect vacuum or fluid seal.<\/td>\n<\/tr>\n
Thin-Wall Machining<\/strong><\/td>\nCreating thin insulating sleeves and liners without deforming the soft material.<\/td>\nWe use air chucks and mandrels to support the part, achieving wall thicknesses as low as 0.5mm.<\/td>\n<\/tr>\n
Finition de surface<\/strong><\/td>\nAchieving smooth sealing surfaces (Ra 0.8 or better) directly off the machine.<\/td>\nEliminates leakage paths in high-purity chemical or semiconductor applications.<\/td>\n<\/tr>\n
Stress-Free Handling<\/strong><\/td>\nManaging the material’s tendency to “squirm” or change size with temperature.<\/td>\nWe machine in a temperature-controlled environment to ensure dimensions hold true at 20\u00b0C.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for PTFE<\/h3>\n

Sensibilit\u00e9 au serrage :<\/strong>
\nPTFE is extremely soft and prone to deformation. Excessive clamping force will ruin the part. We use vacuum fixtures, potting, or soft jaws that encapsulate the part to distribute force.<\/p>\n

Dilatation thermique :<\/strong>
\nPTFE has a very high coefficient of thermal expansion (CTE) and undergoes a phase transition at ~19\u00b0C where it expands significantly. We recommend machining and inspecting at stable room temperatures.<\/p>\n

Outillage :<\/strong>
\nExtremely sharp, high-rake carbide tools are required. Dull tools will compress the material rather than cut it, causing size issues and burrs.<\/p>\n

\u00c9bavurage :<\/strong>
\nBurrs on PTFE are stringy and difficult to remove. We use cryogenic deburring or manual trimming under microscopes for critical medical parts.<\/p>\n<\/div>\n

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Principaux secteurs d'application<\/h3>\n

Traitement chimique<\/strong>
\nPi\u00e8ces cl\u00e9s :<\/em> Valve seats, pump diaphragms, pipe gaskets.
\nWhy PTFE:<\/em> Universal chemical inertness prevents corrosion from acids and solvents.<\/p>\n

Food & Medical<\/strong>
\nPi\u00e8ces cl\u00e9s :<\/em> Mixing paddles, surgical guides, fluid seals.
\nWhy PTFE:<\/em> FDA compliance, non-stick surface (easy to clean), and high-temperature sterilization resistance.<\/p>\n

A\u00e9rospatiale<\/strong>
\nPi\u00e8ces cl\u00e9s :<\/em> Wire insulation, fuel hose liners, standoff insulators.
\nWhy PTFE:<\/em> Excellent dielectric properties and remains flexible at cryogenic temperatures.<\/p>\n

Automobile<\/strong>
\nPi\u00e8ces cl\u00e9s :<\/em> Shock absorber seals, power steering seals, bearings.
\nWhy PTFE:<\/em> Low friction coefficient reduces wear and improves efficiency in moving parts.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Available PTFE (Teflon) Grades Grade Common Name Key Characteristics Typical Applications Virgin PTFE Electrical Grade Pure white. Excellent chemical resistance, electrical insulation, and lowest friction. FDA compliant. Chemical seals, electrical insulators, medical tubing, food processing parts. Mechanical PTFE Reprocessed PTFE Made from recycled resin. Lower tensile strength and purity but more cost-effective. Not FDA compliant. […]<\/p>\n","protected":false},"featured_media":378,"template":"","meta":[],"material_type":[8],"material_attribute":[],"application_feature":[23,22],"machining_process":[25,26],"class_list":["post-377","material","type-material","status-publish","has-post-thumbnail","hentry","material_type-plastic","application_feature-corrosion-resistant","application_feature-high-temp"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material\/377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/types\/material"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/media\/378"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/media?parent=377"}],"wp:term":[{"taxonomy":"material_type","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material_type?post=377"},{"taxonomy":"material_attribute","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/material_attribute?post=377"},{"taxonomy":"application_feature","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/application_feature?post=377"},{"taxonomy":"machining_process","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/fr\/wp-json\/wp\/v2\/machining_process?post=377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}