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Acasă/Produse/Piese prelucrate CNC din PTFE
Categorie Produs
PTF — 8 Product Lines

PTFE CNC
Prelucrat
Piese

8 product lines in virgin PTFE, glass-filled, carbon-filled, and bronze-filled PTFE — gaskets, sealing rings, valve seats, insulating gaskets, sliding washers, chemical-resistant parts, low-friction guide parts, and valve seals. CoF 0.04–0.10 · pH 0–14 · -200°C to +260°C.

Friction Coefficient Comparison (Dry, vs Steel)
Material
CoF Dry
Note
PTFE
0.04–0.10 ◀
Lowest of all solids
POM Delrin
0.20–0.35
Good dry running
Nylon PA6
0.25–0.45
Self-lubricating
Steel/Steel (dry)
0.50–0.80
Needs lubrication
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PTFE Gasket Sealing Ring Valve Seat Chemical CNC
0.04
CoF (lowest)
PTFE Chemical Corrosion Resistant Part Guide Insulating CNC
pH 0–14
Chem. Resist.
8
Game de produse
0.04–0.10
CoF (lowest solid)
pH 0–14
Chem. Resistance
−200 to +260°C
Temperatura de serviciu
PTFE Gasket ✦Inel de etanșare ✦Supapă de așezare ✦Garnitură izolatoare ✦Șaibă glisantă ✦Chemical Resistant Part ✦Low-Friction Guide ✦Valve Seal ✦ PTFE Gasket ✦Inel de etanșare ✦Supapă de așezare ✦Garnitură izolatoare ✦Șaibă glisantă ✦Chemical Resistant Part ✦Low-Friction Guide ✦Valve Seal ✦
Gama completă de produse

8 PTFE Parts — Sealing, Chemical Resistance & Low Friction

Virgin PTFE · Glass-Filled · Carbon-Filled · Bronze-Filled · pH 0–14 · -200°C to +260°C · MOQ 1 piece

PTFE Gasket Sealing Ring Valve Seat Virgin Glass-Filled pH 0-14 Chemical CNC
PTF-001/002/003
SEALING / 001–003 — FEATURED
Gaskets, Sealing Rings & Valve Seats
Virgin PTFE flat gaskets (±0.05mm face flatness, ±0.05mm thickness, chemical inert pH 0–14 — the widest chemical resistance of any gasket material), PTFE sealing rings and O-ring backup rings (profile ±0.05mm, sealing face Ra ≤0.4μm, prevents O-ring extrusion in high-pressure dynamic applications), and PTFE ball valve seats (bore H8, seating face Ra ≤0.4μm, -200°C to +260°C service temperature — PTFE valve seats are standard in ball valves because PTFE's low friction enables quarter-turn operation without galling the ball surface). Glass-filled PTFE (15% GF) for valve seats in high-pressure applications where unfilled PTFE would cold-flow — glass filler improves creep resistance at sustained compressive load. All sealing parts in virgin PTFE for food-contact applications (FDA 21 CFR 177.1550 compliant).
Virgin PTFE pH 0–14Face ±0.05mm-200°C până la +260°CFDA 21 CFR 177.1550
Virgin PTFE · PTFE GF15 · PTFE GF25Solicită ofertă
PTFE Insulating Gasket CTI 600V Electrical Chemical CNC
PTF-004
INSULATION / 004
Insulating Gaskets
Virgin PTFE electrical insulating gaskets. CTI >600V (highest of common engineering plastics). Thickness ±0.05mm; dielectric strength 24 kV/mm. Chemical inert — safe in corrosive electrical environments (battery acid, chlorine gas, etc.) where other insulating materials would degrade.
CTI >600V24 kV/mm
PTFE virginSolicită ofertă
PTFE Sliding Washer Thrust Pad CoF 0.04 Lowest Friction CNC
PTF-005
FRICTION / 005
Sliding Washers
PTFE sliding washers and thrust pads. CoF 0.04–0.10 against steel dry — lowest friction coefficient of all solid materials. Thickness ±0.05mm. Used between rotating and fixed components where zero lubrication and minimum friction are required. Bronze-filled PTFE for high-load thrust applications — better wear resistance at high PV.
CoF 0.04 (lowest)Bronze-filled option
Virgin PTFE · PTFE BronzeSolicită ofertă
PTFE Chemical Corrosion Resistant Part Equipment Profile CNC
PTF-006
CHEMICAL / 006
Chemical Resistant Parts
Virgin PTFE chemical equipment components for applications in HF, HCl, H₂SO₄, HNO₃, aqua regia, and all organic solvents — environments where no metal or other plastic survives. Profile ±0.1mm; temperature -200°C to +260°C. Fittings, nozzle tips, impeller blades, and custom profiles to drawing.
HF / aqua regia resistant
PTFE virginSolicită ofertă
Capacități de fabricație

What PTFE Machining Requires
Unique Techniques

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Cold Flow Management
PTFE has high creep (cold flow) — it deforms under sustained compressive pressure at room temperature. Gaskets and valve seats must have constraining geometry (metal retainer ring or housing groove) to prevent PTFE extrusion under sealing load. Glass-filled PTFE (GF15–GF25) has significantly better creep resistance — specified for high-pressure sealing applications where unfilled PTFE would extrude from the seal groove.
GF15/GF25 for high-press
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Sharp Tooling — No Cutting Force
PTFE is extremely soft and deforms under cutting force rather than shearing cleanly. We use extremely sharp carbide tooling with high rake angles, very high cutting speed, and no coolant (coolant can contaminate PTFE surfaces in sealing applications). Very light finishing passes produce the Ra ≤0.4μm sealing face surface. Worn tooling produces torn, rough PTFE surfaces that do not seal properly.
Sharp carbideNo coolant
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Clean Handling — No Skin Oil
PTFE surfaces must not be touched without gloves — skin oils reduce adhesion and contaminate PTFE sealing faces in critical valve and chemical applications. We handle all PTFE parts with powder-free gloves during machining and packaging. All PTFE parts bagged in clean polyethylene packaging and labelled with handling instructions. Clean handling is not optional for sealing applications.
Gloved handlingPE bag packed
Specificații de precizie

Tolerances & Grade Reference — PTFE Parts

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Toleranțe după caracteristică
Gasket Thickness
±0,05 mm
Planeitatea Feței
±0,05 mm
Bore
H8
Sealing Face Ra
Ra ≤0,4 μm
Profil
±0.1 mm
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Grade Reference
Friction CoF
0.04–0.10
Lowest of all solid materials. No lubrication required. Sliding washers and guide strips.
Temp. Range
−200 to +260°C
Widest service temp of common engineering plastics. Cryogenic and high-temp sealing.
Chem. Resistance
pH 0–14
Resistant to virtually all chemicals including HF and aqua regia. Only alkali metals attack PTFE.
Electrical CTI
>600V
Highest CTI of common engineering plastics. Dielectric strength 24 kV/mm.
Avantajul nostru

De ce inginerii aleg serviciile noastre de PTFE Parts

GF
GF25 for High-Pressure Sealing
We specify glass-filled PTFE (GF15/GF25) for valve seats and seal rings in high-pressure applications — not unfilled virgin PTFE which cold-flows out of the seal groove above 20 bar. GF significantly improves creep resistance while maintaining adequate chemical resistance for most process fluids.
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Gloved Handling — Sealing Face Integrity
All PTFE sealing parts handled with powder-free gloves throughout machining and packaging. Skin oil contamination on PTFE valve seats and gasket faces reduces sealing effectiveness. We label all PTFE sealing parts with handling instructions and bag in clean PE packaging.
FDA
Virgin PTFE FDA 21 CFR 177.1550
Virgin PTFE complies with FDA 21 CFR 177.1550 for food-contact applications. We specify virgin grade for all food/pharma sealing applications — filled grades may contain non-FDA-approved fillers. USP Class VI extraction testing data available on request for pharmaceutical applications.
HF
Only Material for HF Service
Hydrofluoric acid attacks most metals and some plastics — PTFE is the standard material for HF seals, gaskets, and valve seats in semiconductor and chemical processing. Where a customer asks for a HF-compatible sealing material, virgin PTFE is the answer. We confirm chemical compatibility at DFM for all chemical service applications.
Întrebări frecvente

PTFE Parts — Întrebări frecvente

Lowest friction of all solid materials (CoF 0.04–0.10 dry — no lubrication needed); widest service temperature (-200°C to +260°C); chemical inertness to pH 0–14 including HF and aqua regia (only alkali metals and fluorinating agents attack PTFE); CTI >600V electrical insulation; FDA 21 CFR 177.1550 food-contact compliance. Limitation: very soft with high cold flow (creep under sustained pressure) — constraining geometry required for sealing applications.
PTFE virgin: highest purity, FDA/USP, all chemical resistance — seals, gaskets, food-contact. PTFE GF15/GF25: glass-filled, 2.5× better creep resistance — high-pressure valve seats and seal rings. PTFE CF25: carbon-filled, antistatic — guide strips in explosive/cleanroom environments. PTFE Bronze: best wear resistance and thermal conductivity — heavy-load thrust washers and bearings (loses chemical resistance).
Gasket thickness: ±0.05mm. Face flatness: ±0.05mm. Bore: H8. Sealing face: Ra ≤0.4μm. Profile: ±0,1mm. PTFE is soft with high thermal expansion (135×10⁻⁶/°C) — tighter tolerances than these are difficult to maintain consistently. Glass-filled PTFE achieves tighter tolerances than virgin grade due to reduced cold flow.
MOQ: 1 piesă. Lead times: flat parts (gaskets, washers): 3–7 days. Turned parts (sealing rings, valve seats): 5–10 days. All grades in stock. All PTFE parts handled with gloves and bagged in clean PE packaging — do not touch PTFE sealing surfaces without gloves before installation.

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Fiecare solicitare include o revizuire DFM — fezabilitatea toleranței, confirmarea materialului și abordarea procesului înainte de începerea producției. MOQ 1 piesă.

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Răspuns la ofertă
MOQ 1
Prototipuri OK
ISO
9001:2015
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Revizuire DFM pentru fiecare solicitare
Fezabilitatea toleranței, strategia de fixare și confirmarea materialului. Feedback specific și acționabil — nu respingeri generice.
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Inspecția primului articol — Standard
Raport FAI pentru fiecare lot nou. Certificări de material și tratament de suprafață incluse cu fiecare livrare.
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Același proces: prototipare până în producție
Planul de proces din prototipul dumneavoastră se aplică loturilor de producție. Fără re-qualificare atunci când scalați.
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Frezare CNC 3 / 4 / 5-Axis + Strunjire
Piese structurale complexe, arbori, carcase și componente de transmisie. Metale și plastice de inginerie.
ISO 9001:2015 Frezare 3/4/5-Axis Frezare în strung CNC Inspecție CMM Livrare globală