PTFE MATERIAL TUBES

PTFE-2

PTFE-2 MATERIAL TUBES

COLOR – DARK GREY PTFE-2 (POLYTETRAFLUOROETHYLENE WITH FILLERS)

PTFE-2 is a high-performance composite material based on PTFE (polytetrafluoroethylene), reinforced with glass fiber and molybdenum disulfide (MoS₂). This combination significantly improves the mechanical properties of conventional PTFE while maintaining its outstanding chemical resistance and wide service temperature range.

The material provides a low friction coefficient, excellent wear resistance, and reduced deformation under load (cold flow). Thanks to its non-stick surface, PTFE-2 does not absorb moisture and retains stable performance in aggressive environments, making it ideal for PTFE seals, PTFE bushings, and sliding elements.

KEY ADVANTAGES OF PTFE-2

Exceptional chemical resistance

Stable in acids, alkalis, solvents, fuels, and aggressive chemicals. Limitations include molten alkali metals, elemental fluorine at high temperatures, and some compounds that may attack fillers.

Wide temperature range

Operating range from –200 °C to +260 °C, ensuring reliable performance in both cryogenic and high-temperature applications.

Enhanced mechanical properties

The addition of glass fiber and MoS₂ increases wear resistance, dimensional stability, and service life under dynamic loads.

Low friction coefficient

Among the lowest of all plastics, minimizing energy losses in moving parts and extending the lifespan of PTFE sliding bearings and guiding rings.

Non-stick surface

Excellent anti-adhesion and easy-to-clean properties make PTFE-2 suitable for demanding applications in the chemical industry and processing equipment.

Applications

PTFE seals and gaskets for chemical equipment
PTFE bushings and guiding elements for pumps and hydraulics
Sliding rings and bearings for low-friction applications
Heavy-duty seals for the oil & gas industry
Wear-resistant parts for machinery in aggressive environments

Resistance PTFE-2 materials

Good resistance

Mineral acids and organic acids

Organic solvents (ketones, esters, alcohols, aromatics)

Oils, fuels, lubricants

Water, steam up to +260 °C

Cryogenic fluids, oxidizers

Average resistance

Concentrated alkalis at high temperatures

Some salts and organic compounds at elevated temperature

–

Low resistance

Molten alkali metals

Elemental fluorine above 200 °C

Aggressive media attacking glass fiber and MoS₂

–

PTFE-2 Material Data Sheet

Properties

Value

Unit

Standard

Hardness:

≥55

Shore D

ASTM D2240

Density:

2,20 – 2,30

g/cm³

ASTM D792

Tensile strength:

≥18

N/mm²

ISO 12086 ISO 527

Elongation at break:

≥230

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

≤4

ASTM D621

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

9 – 12

0-5(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!