Graphite PTFE Packing with Silicone Rubber Core

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Product Description

Graphite PTFE Packing with Silicone Rubber Core (Style KXT P205) from ISO 9001:2015 certified manufacturer Ningbo Kaxite. Braided from pure expanded PTFE yarn with graphite powder, wrapped around a hollow or solid silicone rubber core. Temperature range -200°C to +290°C, pressure up to 20 bar rotary / 100 bar reciprocating / 150 bar static, rotary speed 22 m/s, density 1.5–1.6 g/cm³, pH 0–14. Designed for large rotating equipment like mixers and agitators, and used in chemical pumps, valves and process lines handling hydrocarbons, steam, solvents and oils. Free sample, OEM/ODM, wholesale pricing.

Product Detail

Graphite PTFE Packing with Silicone Rubber Core – High-Temperature Braided Gland Packing for Pumps, Valves and Agitators | Model KXT P205

Graphite PTFE Packing with Silicone Rubber Core (Style KXT P205) is a braided gland packing in which an inner silicone rubber core is wrapped by a graphite-filled PTFE yarn. The silicone rubber core gives the packing two things a plain PTFE braid cannot deliver: higher chemical resistance and a wider working temperature range, all the way from -200°C to +290°C.

The outer graphite PTFE yarn carries the sealing load and the abrasion resistance; the inner silicone rubber core adds resilience so the packing keeps its sealing force even when the shaft runs slightly off-centre or the gland temperature cycles.

Style: KXT P205
Core options: hollow silicone rubber core, solid silicone rubber core, or other rubber on request
pH range: 0 – 14

TEMPERATURE

-200 / +290

°C

STATIC SEALING

150

BAR

ROTARY SPEED

m/s

PH VALUE

0-14

FULL RANGE

Why the Silicone Rubber Core Matters

The Graphite PTFE Packing with Silicone Rubber Core is built as a two-part structure — an outer graphite PTFE braid wrapped around an inner silicone rubber core. Each part brings a different performance property, and together they cover duties that a single-material packing cannot.

OUTER BRAID

Graphite PTFE Yarn

Carries the sealing load at the shaft contact
Graphite increases thermal conductivity — heat escapes faster
Low coefficient of friction minimises shaft wear
Wide chemical resistance including oils, solvents and steam

INNER CORE

Silicone Rubber Core

Adds resilience that keeps sealing force under cycling
Higher chemical resistance at the core line
Extends the working temperature range beyond plain PTFE
Available in hollow, solid or other rubber configuration

Key Advantages of KXT P205

Higher Chemical Resistance The silicone rubber core gives the Graphite PTFE Packing with Silicone Rubber Core better resistance to aggressive media than a standard PTFE braid.	Wider Temperature Range The Graphite PTFE Packing with Silicone Rubber Core operates from -200°C to +290°C, covering cryogenic to high-temperature duties in one packing.	Higher Thermal Conductivity Graphite in the outer braid conducts frictional heat away from the shaft faster, which keeps the gland cooler and extends packing life.
Low Friction The Graphite PTFE Packing with Silicone Rubber Core has a low coefficient of friction — less shaft wear, less heat, lower power consumption.	Longer Service Life The combination of the graphite braid and the resilient silicone rubber core reduces the frequency of gland re-packing, lowering total maintenance cost.	Wide Application Range The Graphite PTFE Packing with Silicone Rubber Core is suitable for almost all chemical applications — pumps, valves, agitators, mixers and more.

Technical Data – Style KXT P205

Parameter	Value
Style	KXT P205
Pressure — rotary pump	20 bar
Pressure — reciprocating pump	100 bar
Pressure — static sealing	150 bar
Rotary speed	22 m/s
Density	1.5 – 1.6 g/cm³
Temperature range	-200 to +290°C
pH value	0 – 14

Where the Graphite PTFE Packing with Silicone Rubber Core Is Used

Chemical Industry The Graphite PTFE Packing with Silicone Rubber Core is used in almost all chemical applications — reactors, transfer pumps and process valves handling acids, alkalis and aggressive solvents.	Large Rotating Equipment The Graphite PTFE Packing with Silicone Rubber Core is specifically designed to seal large rotating equipment such as mixers, agitators and reactor stirrers.
Hydrocarbons & Steam Good pump and valve packing for hydrocarbons, steam lines and heat-transfer systems where the Graphite PTFE Packing with Silicone Rubber Core keeps the gland tight.	Solvents & Oils Petroleum-based oils, vegetable oils and industrial solvents — the Graphite PTFE Packing with Silicone Rubber Core handles them without swelling or hardening.
Pump and Valve Packing Centrifugal and reciprocating pumps, gate / globe / control valves — the Graphite PTFE Packing with Silicone Rubber Core is a practical choice for both static and dynamic duties.	Cryogenic & High-Temp Duties The -200°C to +290°C range of the Graphite PTFE Packing with Silicone Rubber Core makes it suitable for cold-box service as well as hot process lines.

Available Core Configurations

CORE OPTIONS

Hollow silicone rubber core	Standard configuration for large-diameter shafts and higher compressibility
Solid silicone rubber core	For higher pressure duties where a firmer sealing column is required
Other rubber core	EPDM, NBR and other elastomers available on request

Get Your Graphite PTFE Packing Quotation

Tell us the cross-section, length, quantity, medium and shaft speed — we reply within 24 hours with FOB pricing, lead time and a free sample offer.

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Frequently Asked Questions

Q1: What is Graphite PTFE Packing with Silicone Rubber Core?

The Graphite PTFE Packing with Silicone Rubber Core is a braided gland packing made from pure expanded PTFE yarn with graphite powder, wrapped around an inner silicone rubber core. The combination gives the packing higher chemical resistance and a wider working temperature range than a plain PTFE braid.

Q2: What temperature and pressure can this packing handle?

The Graphite PTFE Packing with Silicone Rubber Core operates from -200°C to +290°C, with a pH range of 0–14. Pressure ratings are 20 bar for rotary pumps, 100 bar for reciprocating pumps and 150 bar for static sealing. Maximum rotary speed is 22 m/s.

Q3: Where is Graphite PTFE Packing with Silicone Rubber Core used?

The Graphite PTFE Packing with Silicone Rubber Core is designed to seal large rotating equipment like mixers and agitators, and is also used in chemical pumps, valves and flange joints handling hydrocarbons, steam, solvents and oils.

Q4: What core configurations are available?

The Graphite PTFE Packing with Silicone Rubber Core is available with a hollow silicone rubber core, a solid silicone rubber core, or another rubber (e.g. EPDM, NBR) on request.

Q5: Can I get a free sample of Graphite PTFE Packing with Silicone Rubber Core before ordering?

Yes. We offer free samples of the Graphite PTFE Packing with Silicone Rubber Core for qualified buyers so you can verify cross-section accuracy, braiding quality and core concentricity before placing a volume order.

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