Dear customers, Hello, many the size of the product, the above prices are for reference only, if you need to specify the size, please contact customer staff, thank you for your cooperation! Product Description: UN seal is the most commonly used hydraulic cylinder seals, which is a typical lip seal, whether for piston or rod can get a good seal. Mainly used in heavy-duty operating machinery or industrial hydraulic piston or piston rod seal. Features: 1, excellent wear resistance; 2, impact load and peak pressure sensitive; 3, high resistance to extrusion capacity; 4, low compression set; 5, suitable for harsh working conditions; 6 easy to install; Technical data: Working pressure: ≤35 Mpa; rate: ≤0.5 m / s; temperature: -20 ℃ ~ 100 ℃;