FAQ
The main products in Líbel's portfolio are oil seals. In addition, we work with u-packs , wiper seals, scrapers, V-rings, bonded seals, circle lips, speed sleeves, O-rings and O-ring kits. If you want to know more about our products, click here.
We mainly work with the sale of Nak brand products, but from 2019 on, we expanded our portfolio, starting to sell products from other brands such as NQK.
Industrial Line: Standard seal, oring, v ring, axial face, seal for electric tools, seals for gear box reducers, seal for washing machines, wind turbine seal and seal for pumps.
Automotive Line: Seals for transmission, power steering, suspension, shock absorber and engine systems.
Agricultural Line: Oil seal for heavy line and AP type.
Construction Line: Oil seal and v ring.
Mining Line: Oil seal for heavy line and speed sleeve
Hydraulic and Pneumatic Line: U pack and wiper seal
We mainly work with the sale of Nak brand products, but as of 2019, we expanded our portfolio, starting to sell products from other brands such as Arca, NQK, Freudenberg, Selotech, among others.
Factors that directly influence the purchase include:
Application – Where will your part be inserted? Each application requires a different type of sealing.
Measurements – The dimensions of the part, such as external diameter, internal diameter and height of the product, must be compatible with the size of the housing (where the part will be inserted).
Temperature – The seal will be subjected to a temperature that will directly influence the choice of material.
Pressure – It is important to specify the maximum pressure to which the seal will be subjected. Considering that it is not ideal for the seal to operate at its limit, as this could cause damage to the system.
Static/dynamic movement – Analysis of what type of movement the seal will have to withstand.
Medium/Fluid – It is important to check in which medium your seal will be applied (water, air, gas, among others), as the influence of these different media and fluids will also directly affect the choice of your seal.
To identify the equivalence between Nak and Sabó, consult our conversion table. This same table will show the conversion of Nak profiles to profiles from the brands Freudenberg, Vedabrás and Save.
The most common rubber materials among industrial seals are: Nitrile (NBR), Viton (FKM), Hydrogenated (HNBR) and Acrylic (ACM). Each material supports a specific temperature (see table below):
Seals with dust lips have a lip that protects the application against dust and prevents the entry of these contaminants. An example of a seal with a dust guard is the TC type. Seals without a dust lip do not have a lip to retain dust or powder, and are suitable for applications in which there will be no contact with these external contaminants. An example of a seal that does not have a dust lip is the SC type.
Shielding means that the seal has a metallic composition in its material, suitable for heavy-duty vehicles, with applications for tractors, cranes, among others.
We work with fully shielded (completely metal composition) and semi-shielded (made of metal and rubber) seal profiles. Both have the same sealing function, protecting against external contaminants. The difference lies in the application, in which some parts require a fully shielded item, and others require a semi-shielded item.
An example of fully shielded seals are the TA (with dust lip) and SA (without dust lip). Semi-shielded seals are the TB (with dust lip) and SB (without dust lip).
The nomenclature of Nak products is defined by a code similar to: TC 25*40*7 VN801/C/C//
This varied sequence of letters and numbers has the following meaning: TC - Product profile
25*40*7 – These are the dimensions of the part, that is, external diameter x internal diameter x height.
V - Letter that refers to the material, Viton.
N - Color, specified in English, where N refers to the color Brown.
80 - Refers to the hardness of the product, in this case, Shore 80.
C/C// - Carbon Steel Spring
The material types, colors, and hardness levels follow the codes in the table below:
Our stainless steel springs are designed for greater durability against water and abrasive liquids. Carbon steel springs, on the other hand, are recommended for standard applications where there will be no exposure to water or corrosive fluids.
Contact our sales team to see if we can add your item to our product range. We can customize a new item to suit your needs, or recommend a partner brand that already has the specifications you need.