{"id":908,"date":"2026-03-17T16:32:47","date_gmt":"2026-03-17T08:32:47","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material_model&p=908"},"modified":"2026-03-17T16:32:47","modified_gmt":"2026-03-17T08:32:47","slug":"virgin-ptfe","status":"publish","type":"material_model","link":"https:\/\/www.jccncmachining.com\/ko\/materials\/ptfe-teflon\/virgin-ptfe\/","title":{"rendered":"Virgin PTFE"},"content":{"rendered":"

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PTFE \/ Teflon Material Variants<\/h3>\n\n\n\n\n\n\n\n\n
Grade<\/th>\nCommon Name<\/th>\nKey Characteristics<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
Virgin PTFE<\/strong><\/td>\nElectrical Grade<\/td>\n99.9% Pure. Lowest friction, highest chemical resistance, and best dielectric properties. FDA compliant.<\/td>\nChemical seals, medical components, laboratory fluidics, electrical insulators.<\/td>\n<\/tr>\n
Mechanical PTFE<\/strong><\/td>\nReprocessed PTFE<\/td>\nContains recycled material. Lower cost but reduced mechanical and electrical properties. Not for food use.<\/td>\nNon-critical spacers, washers, wear pads.<\/td>\n<\/tr>\n
Glass-Filled PTFE<\/strong><\/td>\n15% \/ 25% GF PTFE<\/td>\nReinforced with glass fibers to reduce “cold flow” (creep) and improve compressive strength.<\/td>\nValve seats, gaskets, high-pressure bearings.<\/td>\n<\/tr>\n
Bronze-Filled PTFE<\/strong><\/td>\nBearing Grade<\/td>\nAdded bronze powder for superior wear resistance and thermal conductivity. Best for heavy loads.<\/td>\nHydraulic cylinder guides, dynamic seals, slider plates.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Virgin PTFE Machining Capabilities<\/h3>\n\n\n\n\n\n\n\n\n
Capability<\/th>\nTechnical Description<\/th>\nJucheng Advantage<\/th>\n<\/tr>\n<\/thead>\n
Precision Seal Turning<\/strong><\/td>\nMachining intricate lip profiles and fine grooves for high-performance hydraulic and pneumatic seals.<\/td>\nWe achieve burr-free edges and Ra 0.4\u03bcm finishes directly off the tool, critical for gas-tight and vacuum-tight sealing integrity.<\/td>\n<\/tr>\n
Thin-Wall Sleeve Machining<\/strong><\/td>\nBoring and turning thin-walled PTFE liners and sleeves (down to 0.5mm) without material tearing.<\/td>\nUsing specialized air-chucks and internal mandrels, we prevent the deformation of the soft PTFE, ensuring perfect concentricity.<\/td>\n<\/tr>\n
Zero-Burr Micro-Drilling<\/strong><\/td>\nDrilling micro-channels in PTFE blocks for laboratory fluidic manifolds and chemical analyzers.<\/td>\nOur ultra-sharp micro-tooling ensures internal channels are smooth and free of the stringy burrs common when machining soft Teflon.<\/td>\n<\/tr>\n
Dimensional Stability Control<\/strong><\/td>\nManaging the high thermal expansion of PTFE during the machining process to hold tight tolerances.<\/td>\nWe machine in a climate-controlled facility and utilize specific “dwell periods” to ensure the part reaches thermal equilibrium before final sizing.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for Virgin PTFE<\/h3>\n

Clamping Sensitivity:<\/strong>
\nPTFE is extremely soft and prone to “cold flow” (permanent deformation under pressure). Tip:<\/strong> We use custom soft jaws that encapsulate the part or vacuum workholding to prevent clamping marks and geometry distortion.<\/p>\n

Thermal Expansion Awareness:<\/strong>
\nPTFE has a massive coefficient of thermal expansion and undergoes a phase change at 19\u00b0C. Tip:<\/strong> We maintain a stable 20\u00b0C environment for machining and inspection to ensure dimensions remain consistent from our factory to your assembly line.<\/p>\n

Sharp Tooling Strategy:<\/strong>
\nDull tools will push and smear the material rather than cut it. Tip:<\/strong> We use high-rake, polished uncoated carbide tools. This ensures the PTFE is sheared cleanly, resulting in the best possible surface finish and dimensional accuracy.<\/p>\n

Stress Relief:<\/strong>
\nLarge PTFE billets often contain internal stress from the extrusion process. Tip:<\/strong> We perform roughing passes followed by a stabilizing period to allow the material to “relax” before performing final critical finish passes.<\/p>\n<\/div>\n

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Primary Applications<\/h3>\n

Chemical & Fluid Handling<\/strong>
\nValve seats, pump diaphragms, and gaskets that require near-universal chemical r<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

PTFE \/ Teflon Material Variants Grade Common Name Key Characteristics Typical Applications Virgin PTFE Electrical Grade 99.9% Pure. Lowest friction, highest chemical resistance, and best dielectric properties. FDA compliant. Chemical seals, medical components, laboratory fluidics, electrical insulators. Mechanical PTFE Reprocessed PTFE Contains recycled material. Lower cost but reduced mechanical and electrical properties. Not for food […]<\/p>\n","protected":false},"featured_media":909,"template":"","meta":[],"class_list":["post-908","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/material_model\/908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/media\/909"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/media?parent=908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}