Seals are used to stop the leakage of liquids or gases. Sealing technology is a very broad term and covers very many types of products. There are seals for two types of applications, these are static and dynamic applications. The most popular seals within this category are O-rings. O-rings come in a huge variety of sizes and materials.
To choose the right seal, answer the following questions:
Oil seals are radial shaft seals for rotating shafts. This is used to keep dirt from outside also out and to keep grease or lubricating oil from inside also in.
An oil seal consists of an outer jacket, a metal reinforcement ring, a diaphragm, a coil spring and in some cases a dust lip.
By means of a dust lip, dirt from the outside is stopped, so there is less contamination and the application lasts longer.
The Cellasto seal is intended as an additional seal for rod heads. Radial spherical bearings and rod heads are always used where oscillating or tilting movements need to be accommodated between a rod/shaft and its joint, or when the position of the shaft is not quite perpendicular to the fixture or installation. You can seal this with a Cellasto.
A fender is used as wharf protectors or ship wall protectors. They are also used on loading docks, trucks and trailers. You can also mount a fender around your building where a lot of unloading and loading takes place. You then mount the fender to prevent damage to your building.
Round cord can be used in a wide range of applications. The hardness of round cord varies between 20 and 90 Shore A. We have round cord in many sizes and materials, we also have X profile sealing cord. X profile is an x shaped cord which is used in many applications. We can supply NBR X-profile with a hardness of 70 shore A.
A stuffing box gasket is a shaft seal. The stuffing box gasket serves as a seal between a rotating shaft and the housing when the housing is used to hold back a fluid. For example, we supply Braided Packing by James Walker and Merkel Ramilon 4586.
Features of a stuffing box gasket:
Our factory has the most modern cutting machines for any type of ( alternative ) gaskets. The gaskets find their way in all industries; mechanical engineering, hydraulics, pneumatics, horticulture, greenhouses, drive, drives, engine, motors, chemical, gas, oil industry, steam plants, windmills, gasket, gaskets.
NBR is the most commonly used material when it comes to seals, this is because the material is relatively inexpensive and is well intended against hydraulic oils or lubricating oils. There are two disadvantages to NBR, however. NBR is not well suited to temperatures above +120°C and UV radiation.
EPDM is well suited for sealing solvents, steam and hot water. EPDM seals can withstand low temperatures down to -50°C and high temperatures up to +150°C. However, EPDM is intended to be resistant to UV radiation.
At extremely high temperatures, FKM is the perfect material. FKM is also called Viton, the material is resistant to temperatures up to +200°C and also resistant to -40°C. FKM also remains intact in the presence of acids or bases. FKM is not suitable for steam or hot water. EPDM can be used for this purpose.
FFKM is very suitable for extremely high temperatures or the strongest acids. FFKM can withstand +327°C and some special FFKM seals can withstand extreme cold. Because of this, FFKM is one of the most expensive materials.
VMQ is made of silicone and is very flexible. VMQ seals can withstand temperatures from -60°C and +200°C.
PTFE is very resistant to strong acids and bases. It is also referred to as Teflon. PTFE is neither wear-resistant nor elastic, which is why PTFE seals are only intended for static applications.
HNBR is a variant of NBR that is designed to withstand high temperatures up to +150°C. HNBR is used to seal hydraulic, biological and lubricating oils. HNBR has good wear resistance.