BECA 380 - 383
Description
The BECA 380 profile is a rod seal composed of a sloped metal cage embedded in rubber, and two sealing lips.
The BECA 383 profile is a rod seal with the advantage of having a sealing bead on the outside lip; the metal cage is not sloped compared to the BECA 380 profile.
Advantages
Reliable sealing for "dry air" pneumatic applications
Compatible with mineral oils or greases
Excellent wear resistance
Technical data
| Temperature | -30°C/+150°C |
|---|---|
| Pressure | 1.6 MPa |
| Speed | 1 m/s |
| Medias | Lubricated air |
Applications
Shock absorbers
Distributor
Standard cylinders
Materials
Profiled seal
NBR 85 Shore A
NBR 90 Shore A
FKM80 Shore A
FKM 85 Shore A
FKM 90 Shore A
Metal cage
Steel
Dimensions
Materials
NBR
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 |
FKM
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 |
Technical data
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 |
|---|---|---|---|
| 3.00 | 0.30 | 0.50 | 2.00 |
| 4.00 | 0.30 | 0.50 | 2.00 |
| 5.00 | 0.40 | 0.60 | 2.50 |
| 6.00 | 0.40 | 0.60 | 2.50 |
| 7.50 | 0.50 | 0.70 | 3.00 |
|
380.1006012
|
6,00 | 12,00 | 4,00 |
|
383.0006012
|
6,00 | 12,00 | 5,00 |
|
380.1008014
|
8,00 | 14,00 | 4,00 |
|
380.1010016
|
10,00 | 16,00 | 4,00 |
|
383.0010018
|
10,00 | 18,00 | 5,50 |
|
383.0012020
|
12,00 | 20,00 | 6,00 |
|
380.1012022
|
12,00 | 22,00 | 6,50 |
|
383.0018026
|
18,00 | 26,00 | 6,00 |
|
380.1018028
|
18,00 | 28,00 | 6,50 |
|
383.0018028
|
18,00 | 28,00 | 6,50 |
|
380.0180306
|
18,00 | 30,00 | 6,00 |
|
380.1022032
|
22,00 | 32,00 | 6,50 |
|
383.0022032
|
22,00 | 32,00 | 6,50 |
|
380.1030040
|
30,00 | 40,00 | 6,50 |
|
383.0030040
|
30,00 | 40,00 | 6,50 |
|
380.1032044
|
32,00 | 44,00 | 8,00 |
|
380.1040050
|
40,00 | 50,00 | 6,50 |
|
383.0040050
|
40,00 | 50,00 | 6,50 |
|
380.1050060
|
50,00 | 60,00 | 6,50 |
|
380.1175190
|
175,00 | 190,00 | 9,00 |