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BECA 201

BECA 201
beca_201_3d_v1
beca_201_3d_v2

Description

The BECA 201 profile is a compo-compact rod seal composed of a rubber part and a filled PTFE or POM back-up ring as standard. It can be assembled in a groove according to standard ISO 5597.

Advantages

Excellent wear resistance
Excellent resistance to high pressures
Good chemical resistance
Can be assembled in a closed groove for Ød1 ≥ 35.00 mm

Technical data

Temperature

-30°C/+200°C

Pressure

70 MPa

Speed

0.5 m/s

Medias

Mineral hydraulic oils
Fire-resistant liquids
Biocompatible fluids
Water
Others (contact our experts)

Applications

Mobile machinery
Presses
Aftermarket
Standard cylinders

Materials

Profiled seal

NBR 80 Shore A
FKM 80 Shore A

Back-up ring

POM
Bronze-filled PTFE

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de tige - Housing Groove Gland Rod seal BECA 201

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)
Mineral oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Water

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

Housing Groove Gland Rod Seal - BECA 201

Extrusion gaps

Pressure
MPa
Radial extrusion gap
F/2
25 MPa 0.80
30 MPa 0.70
50 MPa 0.50
70 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
30 dimensions found
201.0028038
Standard request
28,00 38,00 16,00
201.0030040
Standard request
30,00 40,00 16,00
201.0032042
Standard request
32,00 42,00 16,00
201.0035045
Standard request
35,00 45,00 16,00
201.0036046
Standard request
36,00 46,00 16,00
201.0040050
Standard request
40,00 50,00 16,00
201.0045055
Standard request
45,00 55,00 16,00
201.0045060
Standard request
45,00 60,00 22,50
201.0046061
Standard request
46,00 61,00 22,50
201.0050060
Standard request
50,00 60,00 16,00
201.0051071
Standard request
51,00 71,00 30,00
201.0055070
Standard request
55,00 70,00 25,00
201.0056071
Standard request
56,00 71,00 25,00
201.0060080
Standard request
60,00 80,00 30,00
201.0061081
Standard request
61,00 81,00 30,00
201.0063078
Standard request
63,00 78,00 25,00
201.0065080
Standard request
65,00 80,00 25,00
201.0070085
Standard request
70,00 85,00 25,00
201.0070090
Standard request
70,00 90,00 30,00
201.0071091
Standard request
71,00 91,00 30,00
201.0080095
Standard request
80,00 95,00 25,00
201.0080100
Standard request
80,00 100,00 30,00
201.0081101
Standard request
81,00 101,00 30,00
201.0090105
Standard request
90,00 105,00 25,00
201.0090110
Standard request
90,00 110,00 30,00
201.0091111
Standard request
91,00 111,00 30,00
201.0100120
Standard request
100,00 120,00 32,00
201.0110130
Standard request
110,00 130,00 32,00
201.0125145
Standard request
125,00 145,00 32,00
201.0140160
Standard request
140,00 160,00 32,00