Graphite PTFE and Aramid Fiber in Zebra Braided Packing
Model:KXT P308
KXT P308 is a diagonal zebra braid built from graphite-filled PTFE yarn with continuous aramid fiber reinforcement in all four corners. The PTFE body provides low friction and broad chemical resistance, while the aramid spine resists extrusion and abrasion at the gland. Silicone-oil impregnated for easier break-in. Rated 250 bar static, 20 m/s rotary, −100 to +280 °C, pH 2–12. Ideal for abrasive slurries, high-pressure pump glands and valve stems.
Style KXT P308 · Graphite PTFE / Aramid Zebra Braid
Graphite PTFE and Aramid Fiber Zebra Braided Packing for High-Pressure, Abrasive Service
A diagonal zebra braid that puts graphite-filled PTFE yarn in the body and continuous aramid fiber in the four corners — low friction on the shaft, high extrusion and abrasion resistance at the gland. Rated 250 bar static, 20 m/s rotary, −100 °C to +280 °C and pH 2–12.
- 250 barStatic sealing limit
- 20 m/sRotary shaft speed
- +280 °CMax operating temp.
- pH 2–12Chemical range
How the zebra braid is constructed
Most braided packings ask one material to do every job. KXT P308 splits the job in two. The body of the rope is braided from PTFE yarn with graphite incorporated into the fibre, which delivers the low friction and near-universal chemical resistance that buyers specify PTFE for, plus enough thermal conductivity to carry frictional heat away from the shaft instead of letting it build at the contact face.
At the four corners — the points that take the hardest contact with the stuffing box wall and the gland follower — continuous aramid yarn is braided in as a reinforcing spine. Aramid carries the mechanical load, resists extrusion into the clearance gap, and absorbs the abrasion that destroys a plain PTFE packing on slurry and media-handling duty. The finished rope is impregnated with silicone oil to reduce break-in friction and help the packing seat without glazing the shaft.
Because the reinforcement is continuous and placed exactly where the load lands, the packing keeps its cross-section under pressure instead of thinning out and losing gland load — which is the usual reason a PTFE packing starts weeping after a few weeks. For comparison against a single-material construction, the graphite PTFE packing with aramid fiber corners page sets the two side by side. If your duty is driven by temperature rather than abrasion, start from the graphite PTFE packing range; if fibre strength is the deciding factor, review the full aramid fiber packing family, and the complete braided packing catalogue lists every construction by duty.
Performance advantages of KXT P308
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01
Built for difficult sealing duty
Specified where standard packings give up: high pressures, abrasive media and service that combines both at once.
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High mechanical strength
The aramid spine holds the cross-section under gland load, with good chemical and thermal stability carried by the PTFE body.
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03
Exceptional extrusion resistance
Corner reinforcement resists cold flow into the clearance gap, so the packing stays in the box instead of migrating down the shaft.
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Extreme abrasion resistance
Aramid absorbs the wear that slurry and media-handling service imposes, protecting the softer PTFE yarn behind it.
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Longer service life
Low-friction graphite PTFE plus a mechanically reinforced corner translates into longer intervals between repacking.
Where this zebra braided packing is used
- Media containing abrasive solids
- Cold and hot water
- Steam service
- Solvents and process chemicals
- Oils and hydrocarbons
- High-pressure pump glands
Technical data — KXT P308
| Parameter | Condition | Rating |
|---|---|---|
| Pressure | Rotary pump | 40 bar |
| Reciprocating pump | 150 bar | |
| Static sealing | 250 bar | |
| Rotary speed | — | 20 m/s |
| Density | — | 1.45 g/cm³ |
| Temperature | — | −100 °C to +280 °C |
| pH value | — | 2 to 12 |
What to send with your enquiry
- Packing cross-section in mm, or ring dimensions if you require die-formed rings
- Shaft or stem diameter, stuffing box bore and depth
- Process medium, concentration and whether solids are present
- Operating pressure, temperature and shaft speed
- Equipment type — centrifugal pump, reciprocating pump, valve or agitator
- Quantity per size, delivery schedule and any inspection or documentation requirements
Kaxite has manufactured braided packing and sealing materials in Ningbo, Zhejiang since 2015, supplying OEM and MRO buyers directly from the factory. Send your operating conditions and our technical sales team will confirm the correct cross-section, ring quantity and packing density, and return a quotation with dimensional drawings and material documentation.
Get a quotation for KXT P308
Share your flange, gland and media data — we will confirm suitability and reply with pricing, lead time and a sample offer.
Send Inquiry
Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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Email
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