PTFE MATERIAL TUBES

PTFE-3

PTFE-3 MATERIAL TUBES

COLOR – BRONZE PTFE-3 (POLYTETRAFLUOROETHYLENE + 40% BRONZE)

PTFE-3 is a bronze-filled PTFE material (approximately 40% bronze powder), designed to improve the mechanical strength and wear resistance of standard PTFE while preserving its outstanding chemical resistance and wide operating temperature range.

This composite combines the low friction coefficient and excellent chemical resistance of virgin PTFE with the reinforcing properties of bronze, resulting in superior dimensional stability, reduced creep (cold flow), and enhanced heat dissipation. These properties make PTFE-3 the preferred choice for sealing and sliding applications under high load and dynamic conditions.

KEY ADVANTAGES OF PTFE-3

High mechanical strength

Bronze filler increases load capacity, wear resistance, and lifetime of PTFE bushings, bearings, and guide rings.

Improved creep resistance

Compared to virgin PTFE (PTFE-1), PTFE-3 shows significantly reduced deformation under long-term pressure.

Wide operating temperature range

Stable performance from –200 °C to +260 °C in both cryogenic and high-temperature environments.

Low friction coefficient

Ensures smooth operation of PTFE seals and sliding elements, minimizing wear and reducing energy loss.

Better thermal conductivity

Bronze improves heat transfer, reducing the risk of overheating in critical components.

Applications

Bearings, bushings, and wear rings in pumps and hydraulic systems
Guide rings and sliding elements in heavy-duty machinery
High-load seals for oil & gas industry applications
Components for compressors, turbines, and rotating equipment
Applications requiring improved thermal conductivity and dimensional stability

Resistance PTFE-3 materials

Good resistance

Mineral oils and fuels

Organic solvents (ketones, esters, alcohols, aromatics)

Water and steam up to +260 °C

Lubricants, hydraulic fluids

Cryogenic fluids

Average resistance

Concentrated acids at elevated temperatures

Strong oxidizing agents

–

Low resistance

Molten alkali metals

Elemental fluorine above 200 °C

Environments attacking bronze filler

–

PTFE-3 Material Data Sheet

Properties

Value

Unit

Standard

Hardness:

≥58

Shore D

ASTM D2240

Density:

2,98 – 3,16

g/cm³

ASTM D792

Tensile strength:

≥18

N/mm²

ISO 12086 ISO 527

Elongation at break:

≥200

ISO 12086 ISO 527

Compressive strength at 1% deformation

≥8

N/mm²

ASTM D695

Deformation under load at room temperature 24 hours at 13,7 N/mm2

≤8

ASTM D621

Permanent deformation as above after 24 hours of rest atroom temperature

≤5

ASTM D621

Coefficient of Linear Expansion ( 25° – 100°C )

8 – 11

10-5(mm/mm)/ °C

ASTM D696

Min. service temperature:

– 200

°C

–

Max. service temperature (short term):

+ 260

°C

–

All above established data results from random tests which were taken from the functioning production. All data was stated based on standard test-products in accordance with ISO, DIN and ASTM standards and can substantially not be extended to the completed seal. Our practical technical recommendation, either oral, written or through tests is given in conformity with our best knowledge. However, this data is to be regarded as non-obligatory advice, also taking into consideration any protective rights of a third party, and does not acquit you from making tests with our product in relation to its adaptability for the assigned process and intendment. Utilization, application and processing of the products befall completely outside of our control and are therefore solely your liability. As regards the responsibility, it will be limited to all damages in the value of the product which we delivered and you applied. Certainly, we do assure the immaculate quality of our products in concordance with our general sales and delivery conditions.

TEST ALPANA QUALITY

We take pride in our seal-making raw materials and are ready to offer samples of our semi-finished products. For testing, we provide our most popular materials, including the Max series of polyurethanes: H-Pur, SH-Pur, XSH-Pur, XH-Pur—as well as rubber bushings: NBR, FKM, H-NBR, EPDM, and MVQ!