BECA 190
Description
The BECA 190 profile is a compo-compact rod seal composed of a profiled rubber ring and a POM back-up ring on the back as standard. It can be assembled in a groove according to standard ISO 5597.
Advantages
Excellent wear resistance
Good chemical resistance
Can be assembled in a closed groove for Ød1 ≥ 30.00 mm
Technical data
| Temperature | -30°C/+200°C |
|---|---|
| Pressure | 50 MPa |
| Speed | 0.5 m/s |
| Medias | Mineral hydraulic oils |
Applications
Mobile machinery
Presses
Aftermarket
Standard cylinders
Materials
Profiled seal
NBR 80 Shore A
FKM 80 Shore A
Back-up ring
Polyoxymethylene (POM)
Bronze-filled PTFE
Dimensions
Materials
NBR 80 Shore A
Nitrile rubber (NBR) is the general term for acrylonitrile-butadiene copolymer. The ACN content can vary between 18% and 50%. While the acrylonitrile content is important, the resistance to oil and fuel is more so. Conversely, the elasticity and compression set are not as good. The NBR has good mechanical properties and good wear resistance. However, its resistance to atmospheric agents and the ozone is relatively low.
| Chemical resistance | Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel) Mineral oils and greases Fire-resistant fluids (HFA, HFB and HFC) Diluted acids, low-temperature alkaline and saline solutions Water (up to +100°C max) |
|---|---|
| Compatibility issue | Fuels with high aromatic content Aromatic hydrocarbons (benzene) Chlorinated hydrocarbons (trichlorethylene) Polar solvents (ketone, acetone, acetic acid, ethylene-ester) Strong acids Glycol-based brake fluids Atmospheric and ozone agents |
| Temperature range | -30°C / +100°C in dynamic applications (+120°C in static applications) |
FKM 80 Shore A
Depending on their structure and fluorine content, the chemical resistance and resistance to the cold in fluororubbers can vary. This FKM-based rubber is very often used for high-temperature hydraulics and pneumatics, for industrial valves, injection/fuel systems, motor seals and high-vacuum systems.
| Chemical resistance | Mineral oils and greases, ASTM n°1, IRM 902 and IRM 903 oils. Fire-resistant liquids (HFD) Silicone oils and greases Mineral and vegetable oils and greases Aliphatic hydrocarbons (propane, butane, petroleum) Aromatic hydrocarbons (benzene, toluene) Chlorinated hydrocarbons (trichlorethylene) Fuel (including high alcohol content) Atmospheric and ozone agents |
|---|---|
| Compatibility issue | Glycol-based brake fluids Ammonia gas Organic acids with a low molecular weight (formic and acetic acids) |
| Temperature range | -20°C/+200°C |
Polyoxymethylene - POM
Polyoxymethylene (POM or polyacetal) belongs to the thermoplastics, which have a number of advantages - strong mechanical resistance, good creep strength, high resistance to shocks, particularly at low temperatures, good wear resistance, good sliding coefficient, excellent machinability and good dielectric properties. The low water absorption coefficient, unlike polyamide (PA), also gives this material an excellent dimensional stability.
| Chemical resistance |
Aliphatic hydrocarbons (propane, butane, petroleum, diesel fuel) |
|---|---|
| Compatibility issue | Acids |
| Temperature range | -50°C/+115°C |
Bronze-filled PTFE
PTFE is a thermoplastic polymer made of tetrafluoroethylene with exceptional properties - very low friction coefficient (adhesive friction and sliding friction are almost equal), physiologically safe for temperatures up to +200°C, excellent electrical insulation properties, and excellent chemical compatibility with the majority of fluids. On the other hand, as this material is plastic and not elastic, so it cannot easily replace rubber bases.
Between 40% and 60% of bronze is added to the PTFE as a filler. This machined material has excellent wear resistance, low creep deformation and good thermal conductivity.
Technical data
Extrusion gaps
| Pressure MPa |
Radial extrusion gap F/2 |
|---|---|
| 10 MPa | 0.65 |
| 20 MPa | 0.55 |
| 35 MPa | 0.45 |
| 50 MPa | 0.35 |
Surface roughness
| Roughness | Dynamic surface area | Static surface area | Groove flanks |
|---|---|---|---|
| Ra | 0.1 - 0.4 µm | ≤ 1.6 µm | ≤ 3.2 µm |
| Rz | 0.63 - 2.5 µm | ≤ 6.3 µm | ≤ 10.0 µm |
| Rmax | 1.0 - 4.0 µm | ≤ 10.0 µm | ≤ 16.0 µm |
Chamfers and radius
| Radial section S |
Radius R1 |
Radius R2 |
Chamfer C |
|---|---|---|---|
| 5.00 | 0.40 | 0.60 | 2.50 |
| 7.50 | 0.80 | 1.00 | 4.00 |
| 10.00 | 0.80 | 1.00 | 5.00 |
| 12.50 | 1.00 | 1.20 | 6.50 |
|
190.0006014
|
6,00 | 14,00 | 6,30 |
|
190.0008016
|
8,00 | 16,00 | 6,30 |
|
190.0010018
|
10,00 | 18,00 | 6,30 |
|
190.0010020
|
10,00 | 20,00 | 8,00 |
|
190.0012020
|
12,00 | 20,00 | 6,30 |
|
190.0012022
|
12,00 | 22,00 | 8,00 |
|
190.0014022
|
14,00 | 22,00 | 6,30 |
|
190.0014024
|
14,00 | 24,00 | 8,00 |
|
190.0016024
|
16,00 | 24,00 | 6,30 |
|
190.0016026
|
16,00 | 26,00 | 8,00 |
|
190.0018026
|
18,00 | 26,00 | 6,30 |
|
190.0018028
|
18,00 | 28,00 | 8,00 |
|
190.0020028
|
20,00 | 28,00 | 6,30 |
|
190.0020030
|
20,00 | 30,00 | 8,00 |
|
190.0022030
|
22,00 | 30,00 | 6,30 |
|
190.0022032
|
22,00 | 32,00 | 8,00 |
|
190.0025033
|
25,00 | 33,00 | 6,30 |
|
190.0025035
|
25,00 | 35,00 | 8,00 |
|
190.0028038
|
28,00 | 38,00 | 8,00 |
|
190.0028043
|
28,00 | 43,00 | 12,50 |
|
190.1030040
|
30,00 | 40,00 | 8,00 |
|
190.0032042
|
32,00 | 42,00 | 8,00 |
|
190.0032047
|
32,00 | 47,00 | 12,50 |
|
190.2033045
|
33,00 | 45,00 | 10,00 |
|
190.0035045
|
35,00 | 45,00 | 8,00 |
|
190.0036046
|
36,00 | 46,00 | 8,00 |
|
190.0036051
|
36,00 | 51,00 | 12,50 |
|
190.0040050
|
40,00 | 50,00 | 8,00 |
|
190.0040055
|
40,00 | 55,00 | 12,50 |
|
190.0045055
|
45,00 | 55,00 | 8,00 |
|
190.0045060
|
45,00 | 60,00 | 12,50 |
|
190.0050060
|
50,00 | 60,00 | 8,00 |
|
190.0050065
|
50,00 | 65,00 | 12,50 |
|
190.0055070
|
55,00 | 70,00 | 12,50 |
|
190.0056071
|
56,00 | 71,00 | 12,50 |
|
190.0056076
|
56,00 | 76,00 | 16,00 |
|
190.0060075
|
60,00 | 75,00 | 12,50 |
|
190.0063078
|
63,00 | 78,00 | 12,50 |
|
190.0063083
|
63,00 | 83,00 | 16,00 |
|
190.0065080
|
65,00 | 80,00 | 12,50 |
|
190.0070085
|
70,00 | 85,00 | 12,50 |
|
190.0070090
|
70,00 | 90,00 | 16,00 |
|
190.0080095
|
80,00 | 95,00 | 12,50 |
|
190.0080100
|
80,00 | 100,00 | 16,00 |
|
190.0090105
|
90,00 | 105,00 | 12,50 |
|
190.0090110
|
90,00 | 110,00 | 16,00 |
|
190.0100120
|
100,00 | 120,00 | 16,00 |
|
190.0100125
|
100,00 | 125,00 | 20,00 |
|
190.0110130
|
110,00 | 130,00 | 16,00 |
|
190.0110135
|
110,00 | 135,00 | 20,00 |
|
190.0125145
|
125,00 | 145,00 | 16,00 |
|
190.0125150
|
125,00 | 150,00 | 20,00 |
|
190.2140160
|
140,00 | 160,00 | 12,00 |
|
190.0140160
|
140,00 | 160,00 | 16,00 |
|
190.0140165
|
140,00 | 165,00 | 20,00 |
|
190.0160185
|
160,00 | 185,00 | 20,00 |
|
190.0180205
|
180,00 | 205,00 | 20,00 |
|
190.0200225
|
200,00 | 225,00 | 20,00 |