BECA 016 SAE J518
Description
The BECA 016 profile is a rectangular rubber flange seal suitable for hydraulic fittings SAE J518.
Advantages
Good extrusion resistance, little sensitivity to extrusion gaps
Good compression set
No twisting in the seal
No need for a connected back-up ring
Limited mechanical deformation on the seal cross-section
Long lifespan
Technical data
| Temperature | -20°C/+200°C |
|---|---|
| Pressure | 40 MPa |
| Medias | Mineral hydraulic oils |
Applications
Flanges
Fittings
Materials
NBR 90 Shore A
FKM 90 Shore A
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 | -20°C / +120°C in static applications for NBR 90 Shore A |
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 | -10°C / +200°C in static applications for FKM 90 Shore A |
Design guidelines
Design data for the housing
| Nominal flange size |
Nominal diameter ØDN |
Outside diameter ØD1 min - max |
Axial section S min - max |
Width L1 min - max |
|---|---|---|---|---|
| 1/2" | 13 | 25.40 - 25.83 | 3.94 - 4.45 | 2.79 - 2.92 |
| 3/4" | 19 | 31.75 - 31.88 | 3.94 - 4.45 | 2.79 - 2.92 |
| 1" | 25 | 39.62 - 39.75 | 3.94 - 4.45 | 2.79 - 2.92 |
| 1 1/4" | 32 | 44.45 - 44.58 | 3.94 - 4.45 | 2.79 - 2.92 |
| 1 1/2" | 38 | 53.72 - 53.98 | 3.94 - 4.45 | 2.79 - 2.92 |
| 2" | 51 | 63.25 - 63.50 | 3.94 - 4.45 | 2.79 - 2.92 |
|
016.25853
|
1/2" | 13,00 | 25,85 | 3,40 | 2,80 |
|
016.32303
|
3/4" | 19,00 | 32,30 | 3,40 | 2,80 |
|
016.40153
|
1" | 25,00 | 40,15 | 3,40 | 2,80 |
|
016.45053
|
1 1/4" | 32,00 | 45,05 | 3,40 | 2,80 |
|
016.54403
|
1 1/2" | 38,00 | 54,40 | 3,40 | 2,80 |
|
016.63903
|
2" | 51,00 | 63,90 | 3,40 | 2,80 |