INNOVATION PRODUCT

Max XH-PUR

Polyurethane sealing materials

MAX XH-PUR – NEXT-GENERATION HARD POLYURETHANE FOR CRITICAL SEALING APPLICATIONS

Max XH-PUR is a high-performance hard polyurethane material developed for applications requiring maximum wear resistance, dimensional stability, and long-term sealing performance under high mechanical and chemical loads.

By utilizing advanced chemical components and precision manufacturing technology, Max XH-PUR combines outstanding strength with excellent resistance to abrasion, tear, and aggressive media, outperforming conventional rigid polyurethanes in operational characteristics.

KEY ADVANTAGES OF MAX XH-PUR

WIDE OPERATING TEMPERATURE RANGE

From –25 °C to +150 °C (short-term up to +165 °C) while maintaining shape, stability, and sealing integrity even under extreme operating conditions.

HIGH WEAR AND TEAR RESISTANCE

Tensile strength above 170 N/mm² and abrasion value below 18 mm³ ensure exceptional durability under high load and friction conditions.

CHEMICAL RESISTANCE

Resistant to hydrolysis, oils, and aggressive fluids, compatible with biodegradable lubricants, and reliable in both dry and wet/underwater environments.

SHAPE RECOVERY AND LOW COMPRESSION SET

Ensures stable sealing due to very low residual deformation (< 25 % at 100 °C and < 30 % at 150 °C).

FDA COMPLIANCE

Selected grades of Max XH-PUR meet FDA CFR 177.2600 requirements for food-contact applications.

Applications

Max XH-PUR is ideal for:

Hydraulic seals and cylinder bushings
Sealing systems for subsea and offshore installations
Oil and gas industry solutions
Seals for heavy machinery and mining equipment
Seals for food processing and pharmaceutical equipment

RESISTANCE MAX H-PUR ELASTOMER

Good resistance

Hydraulic fluids based on mineral oil

Biologically degradable hydraulic
fluids

Fire-resistant pressure fluids HFA and HFB

Mineral oils and grease (certain additives can have destructive effects)

Silicone oils and grease

Aliphatic hydrocarbons (e.g. propane, butane)

Hot water and sea water up to +90°С

Diluted acids and basis

Average resistance

Fire-resistant fluids of type HFC (water glycol mixture)

Some additives for power can have destructive effect (e.g. fungicides)

Ethanol

Non-ethanol fuels (except premium blend petrol and unleaded fuels)

–

Low resistance

Aromatic hydrocarbons

Chlorinated hydrocarbons
(dichloromethane, trichloromethane)

Ketones and glycols

Break fluids, based
on glycol

Hot steam exceeding +100°С

Concentrated acids and basis

–

Max H-Pur Material Data Sheet

Properties

Value

Unit

Standard

Hardness at 20°:

Shore A

DIN 53505

Hardness at 20°:

56 +/-2

Shore D

DIN 53505

Density:

1,21

g/cm³

DIN ISO 1183-1

100% Modulus:

>16

N/mm²

DIN 53504

300% Modulus:

>33

N/mm²

DIN 53504

Tensile strength:

>41

N/mm²

DIN 53504

Elongation at break:

>320

DIN 53504

Rebound resilience:

DIN 53512

Tear strength:

>170

N/mm²

DIN ISO 34-1

Abrasion:

<18

mm³

DIN 53516

Compression set:*

ISO 815-1

Compression set:**

<25

ISO 815-1

Compression set:***

<30

ISO 815-1

Min. service temperature:

-25

°C

–

Max. service temperature (short term):

+150 (+165)

°C

–

g Glass Transition Temp.:

-24

°C

–

*Compression set @ 70°C, 24 hours
**Compression set @ 100°C, 24 hours
***Compression set @ 150°C, 24 hours

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!

Max XH-PUR

Polyurethane sealing materials

MAX XH-PUR – NEXT-GENERATION HARD POLYURETHANE FOR CRITICAL SEALING APPLICATIONS

KEY ADVANTAGES OF MAX XH-PUR

WIDE OPERATING TEMPERATURE RANGE

HIGH WEAR AND TEAR RESISTANCE

CHEMICAL RESISTANCE

SHAPE RECOVERY AND LOW COMPRESSION SET

FDA COMPLIANCE

Applications

TEST ALPANA QUALITY

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