* Other material combinations can be customized
according to working conditions.
The JB-3 polyurethane seal is a rod seal with asymmetric lips and double lip in hydraulic cylinders. The Mainly used as a piston rod seal for heavy-duty construction machinery and industrial hydraulic applications.
Excellent wear resistance
High resistance against extrusion
Unaffected by transient loads and high pressure
Small compression deformation
Adapt to the harsh working conditions
Prevent entry of outside air
JB-3 rod seal is mainly used for the sealing of piston rods and plungers in heavy-duty machinery. It is mounted on its outer diameter by positioning. The rear dynamic sealing lip improves leakage characteristics while preventing contaminants from entering the atmosphere. Compared to JB-2, JB-3's inner lip is shorter and more flexible, so it can better adapt to working conditions and piston rods bending deformation. Groove and diameter dimensions are in accordance with ISO5597/1 and ISO3320 international standards respectively.
Hydraulic oil (mineral oil base)
* Further specifications on request,we also supply turning products or semi-finished materials.
1. Do you produce the PU material yourself?
Yes,we produce PU seal on our own from raw material handling to final packing.
2. Could you make PU seals in indicative color?
Yes,the color of PU seals is depending on the additives.We can make PU seals with your requested color by adding colorant accordingly.
3. How do you pack the items?
Generally,there are 2 ways to pack the seals.
1) Proper packaging with No Marks;
2) Custom logo packaging,we may need logo/brand authorized statement from you if this option is necessary.
4. Do you also sell the PU tubes?
Yes,we can sell either the finished sealing or semi-finished tubes.