PTFE Machined Finish Components
Custom CNC Machined Fluoropolymers
Precision Turn-Key Components to Drawings
Sag Engineers operates high-precision CNC multi-axis turning and milling machinery dedicated entirely to fluoropolymers and engineering plastics. We fabricate customized components with micro-tolerances, mirror surface finishes, and zero thermal degradation.
Custom Machined Portfolio:
- Valve Components: Valve seats, body seals, seal covers, plug valve sleeves, stem packings, wedge rings
- Dynamic Seals: Chevron 'V' packings, 'O' rings, back-up anti-extrusion rings, oil seal rings, scraper rings
- Compressor Parts: Piston rings and rider rings for non-lubricated dry gas compressors
- Bearings & Thrust Washers: Split bushings, flanged bushes, sliding pads, spherical seat rings
- Flow & Instrumentation: Rotameter floats, non-return valve (NRV) balls, sight glass retainers
- Laboratory & Electronic: Insulators, terminal bushings, crucibles, beakers, chemical sampling adaptors
Blueprints & Tolerance Capabilities:
Machined strictly as per 2D/3D CAD models, PDF drawings, or physical sample reverse engineering.
Specialized diamond cutting tools and cryogenic de-burring for burr-free chamfers and razor-sharp sealing edges.
Available in Virgin PTFE, 15%-25% Glass-filled, 25%-33% Carbon-filled, 40%-60% Bronze-filled, Delrin, and UHMWPE.
Popular Machined Components & Operational Roles
| Component Name | Recommended Material Grade | Operating Environment | Key Benefit |
|---|---|---|---|
| Ball Valve Seats | Virgin / 15% Glass / Carbon | Chemical, cryogenic, high pressure | Zero leakage, low torque actuation, self-lubricating |
| Plug Valve Sleeves | Virgin or chemically modified PTFE | Strong inorganic acids & alkalis | Eliminates grease lubrication, prevents metal-on-metal seizure |
| Chevron 'V' Packing Sets | Virgin / Glass / Carbon stacks | Reciprocating pumps, valve stems | Self-energizing lip seal, long cycle life without re-tightening |
| Compressor Piston & Rider Rings | Carbon / Bronze / MoS2 filled | Non-lubricated gas compressors | Dry running, high wear resistance, zero oil contamination |
| NRV Balls & Rotameter Floats | Solid high-density Virgin PTFE | Corrosive flow meters & check valves | Spherical roundness, precise specific gravity, inertness |
| High Voltage Insulator Bushings | Electrical Grade Virgin PTFE | High tension switchgear, capacitors | Zero arc tracking, 60-80 kV/mm dielectric breakdown |