Graphite Packing with PTFE Impregnation
Model:KXT P402
Kaxite KXT P402 is a PTFE-impregnated graphite packing braided from expanded graphite yarns impregnated with PTFE as a blocking agent and reinforced with textile fibres. Rotary 30 bar, reciprocating 100 bar, static 200 bar, 20 m/s, 1.2 g/cm³, −200 to +650 °C, pH 0–14. Power station pumps and valves, petrochemical, expansion joints, steam, water, mixers. Factory price, PDF datasheet, custom cross-sections, quote in 24 h.
Model KXT P402 · PTFE-Impregnated Graphite Packing
Graphite Packing with PTFE Impregnation — 30 bar Rotary, 200 bar Static, −200 to +650 °C, pH 0–14
Kaxite KXT P402 is braided from expanded graphite yarns that are individually impregnated with PTFE as a blocking agent, then reinforced with textile fibres. The PTFE fills the interstices of the graphite yarn, so the finished packing has far tighter cross-section integrity than a standard graphite packing — it does not leak through the braid itself under pressure. The result is a packing with high structural strength, a very low friction value, and a surface that stays gentle on the shaft and stem even after long running hours. It is the standard choice for rotary pumps and valves in power stations, petrochemical plants and other areas where a conventional graphite packing would weep through its own cross-section. Factory-direct price, PDF datasheet, custom cross-sections, quote within 24 hours.
KXT P402
Operating Envelope · KXT P402
Expanded Graphite + PTFE + Textile Fibre
Rotary Pump 30 bar Continuous rotary service
Reciprocating 100 bar Piston and plunger service
Static Sealing 200 bar Valve stems, static glands
Rotary Speed 20 m/s Maximum shaft speed
Temperature −200 / 650 °C Continuous service range
pH Range 0 – 14 Strong acids and alkalis
Standard Graphite Packing
What Happens Without PTFE Impregnation
- Graphite yarn has open interstices — the medium can migrate through the braid cross-section under pressure.
- Higher friction against the shaft creates heat, which accelerates wear on both packing and shaft sleeve.
- Cross-section compresses and loses shape over time, so the gland needs re-tightening more often.
- Short packing life in high-cycle pumps and valves means more maintenance stops and higher total cost.
KXT P402 · PTFE Impregnated
What PTFE Impregnation Actually Changes
- PTFE fills the interstices of each yarn — the braid cross-section becomes tight against medium migration.
- Very low friction value reduces running temperature and protects the shaft and stem from wear.
- Structural strength holds the cross-section shape, so gland pressure stays stable between re-tightenings.
- Longer service life lowers total cost of ownership compared with a standard graphite packing.
Where KXT P402 Is Used
Five application areas where a tighter cross-section and lower friction make the difference.
01 Power Station Rotary Pumps
02 Power Station Valves
03 Petrochemical Plants
04 Expansion Joints
05 Steam · Water · Mixers
For lower-temperature chemical pumps where a pure PTFE packing is sufficient, compare with PTFE Packing. For a core-free graphite packing with no PTFE impregnation, see Graphite Packing. For high-speed shafts where wire reinforcement is required, look at Graphite Packing Reinforced with Metal Wire. For a graphite packing with a silicone rubber core that maintains gland pressure through thermal cycling, see Graphite PTFE Packing. To compare all braided packing types side by side, browse the full Braided Packing range.
Full Specification — KXT P402
Data below is the standard product offering. Custom cross-section sizes, coil lengths and OEM packaging are available.
| Parameter | Value / Detail |
|---|---|
| Model | Kaxite KXT P402 |
| Construction | Expanded graphite yarn impregnated with PTFE as a blocking agent, reinforced with textile fibres |
| Blocking agent | PTFE (each yarn individually impregnated before braiding) |
| Reinforcement | Textile fibres for structural strength and cross-section tightness |
| Rotary pump pressure | 30 bar |
| Reciprocating pump pressure | 100 bar |
| Static sealing pressure | 200 bar |
| Rotary speed | 20 m/s maximum |
| Density | 1.2 g/cm³ |
| Temperature range | −200 °C to +650 °C |
| pH range | 0 – 14 |
| Cross-section sizes | Standard square and round profiles; custom sizes on request |
| Application media | Steam, water, petrochemical fluids, general chemical service |
| Equipment | Rotary pumps, valves, expansion joints, mixers, reciprocating pumps |
| Customization | Cross-section size, coil length, OEM packaging, private label |
| Documentation | Material data sheet, batch traceability, dimensional inspection record |
| Quotation basis | Cross-section size, quantity, medium, operating pressure and temperature, destination port |
Why Buyers Choose KXT P402 Over Standard Graphite Packing
Four advantages that come directly from the PTFE-impregnated construction.
Advantage 01
Tighter Cross-Section
Excellent cross-section tightness compared to a normal graphite packing, because the PTFE fills the interstices of each yarn before braiding.
Advantage 02
High Structural Strength, Low Friction
The textile fibre reinforcement holds the braid shape, while the PTFE surface gives a friction value lower than other braided packings.
Advantage 03
Long Service Life
Longer running time between replacements saves material cost and, more importantly, saves maintenance downtime on the equipment.
Advantage 04
Gentle to Shaft and Stem
The low-friction PTFE surface and soft graphite body together reduce wear on the shaft sleeve and valve stem, extending the life of the equipment itself.
Frequently Asked Questions
Straight answers to the questions buyers ask most about PTFE-impregnated graphite packing.
Need a factory price for PTFE-impregnated graphite packing? Send your cross-section size, quantity, medium and operating conditions — Kaxite replies within 24 hours with a factory-direct quotation and free sample offer.
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Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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