Color – blue LT-PUR material
LT-Pur is a thermoplastic polyurethane elastomer (TPU), which has been modified to operate at low temperatures (to about -50°С) without loss of main physical and mechanical characteristics. Compared with Pur, LT-Pur has higher elasticity (better than silicone rubber MVQ).
Application LT-PUR material
LT-Pur can be used in the same sphere of application as Pur, but at lower temperatures, primarily in cold climatic zones.
Resistance LT-PUR Elastomers
Good resistance | Average resistance | Low resistance |
|---|---|---|
Hydraulic fluids based on mineral oil | Fire-resistant fluids of type HFC (water glycol mixture) | Aromatic hydrocarbons |
Biologically degradable hydraulic fluids | Some additives for power can have destructive effect (e.g. fungicides) | Chlorinated hydrocarbons (dichloromethane, trichloromethane) |
Fire-resistant pressure fluids HFA and HFB | Ethanol | Ketones and glycols |
Mineral oils and grease (certain additives can have destructive effects) | Non-ethanol fuels (except premium blend petrol and unleaded fuels) | Break fluids, based on glycol |
Silicone oils and grease | – | Hot steam exceeding +100°С |
Aliphatic hydrocarbons (e.g. propane, butane) | – | Concentrated acids and basis |
Hot water and sea water up to +90°С | – | – |
Diluted acids and basis | – | – |
Mainly used
- Wipers
- Piston seals
- Rod seals
- O-Rings
- Rotor seals
LT-Pur Material Data Sheet
Properties | Value | Unit | Standard |
|---|---|---|---|
Hardness | 95 +/-3 | Shore A | DIN 53505 |
Hardness at 20°: | 45 +/-3 | Shore D | DIN 53505 |
Density: | 1,21 | g/cm³ | DIN ISO 1183-1 |
100% Modulus: | >11.5 | N/mm² | DIN 53504 |
300% Modulus: | >28.5 | N/mm² | DIN 53504 |
Tensile strength: | >45 | N/mm² | DIN 53504 |
Elongation at break: | >370 | % | DIN 53504 |
Rebound resilience: | >28 | % | DIN 53512 |
Tear strength: | >100 | N/mm² | DIN ISO 34-1 |
Abrasion: | <16 | mm³ | DIN 53516 |
Coefficient of friction (dyn.): | <0.2 | μ | ASTM D1894 |
Compression set:* | <20 | % | DIN ISO 815-1 |
Compression set:** | <29 | % | DIN 53517 |
Compression set:*** | <32 | % | DIN 53517 |
Min. service temperature: | -25 | °C | |
Max. service temperature (short term): | +150 (+165) | °C | |
g Glass Transition Temp.: | -24 | °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.