BECA 325

BECA 325
beca_325_3d_v1
beca_325_3d_v2

Description

The BECA 325 profile is a U-ring type single acting rod seal with symmetrical lips, composed of a profiled polyurethane seal, a NBR O'Ring to preserve its elastic memory and a POM back-up ring on the back. It can be assembled in a groove according to standard ISO 5597.

Advantages

Very good sealing at low pressures
Elastic memory preserved using the O'Ring
Excellent abrasion resistance
Very good extrusion resistance

Technical data

Temperature

-30°C/+100°C

Pressure

45 MPa

Speed

0.5 m/s

Medias

Mineral hydraulic oils

Applications

Agriculture
Mobile machinery
Lifting systems
Injection presses
Hydraulic cylinders

Materials

Profiled seal

PU 93 Shore A - Blue
PU 96 Shore A - Blue
High temp. PU 96 Shore A - Beige

O'Ring

NBR 70 Shore A

Back-up ring

Polyoxymethylene (POM)

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de tige - Housing Groove Gland Rod seal BECA 325

Materials

PU

Polyurethane is a material that has the elastic properties of rubber. The proportion in its composition (diisocyanate, polyol, chain extender) is determined by its properties. This material is characterised by a strong mechanical resistance, good wear resistance, high elastic modulus, good flexibility and a very good ozone and oxidation resistance.

Chemical resistance Pure aliphatic hydrocarbons (propane, butane)
Mineral oils and greases
Silicone oils and greases
Water up to +50°C
Compatibility issue Ketones, esters, ethers, alcohols and glycols
Hot water, steam, alkalis, amines and acids
Temperature range

-30°C/+90°C
-30°C / +110°C with our PUHT (short term peak at 150°C)

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
-40°C / +100°C with our low-temperature NBR

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

Technical data

Housing Groove Gland Rod Seal - BECA 325

Extrusion gaps

Pressure
MPa
Radial extrusion gap
F/2
25 MPa 0.35
35 MPa 0.30
40 MPa 0.25
45 MPa 0.20

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 0.20 0.40 2.00
4.00 0.40 0.60 2.50
5.00 0.80 1.00 2.50
7.50 0.80 1.00 4.00
10.00 0.80 1.00 5.00
71 dimensions found
325.006014I
Standard request
6,00 14,00 5,70 6,30
325.008016I
Standard request
8,00 16,00 5,70 6,30
325.010018I
Standard request
10,00 18,00 5,70 6,30
325.010020I
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10,00 20,00 7,30 8,00
325.012020I
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12,00 20,00 5,70 6,30
325.012022I
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12,00 22,00 7,30 8,00
325.014022I
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14,00 22,00 5,70 6,30
325.014024I
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14,00 24,00 7,30 8,00
325.016024I
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16,00 24,00 5,70 6,30
325.016026I
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16,00 26,00 7,30 8,00
325.018025I
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18,00 25,00 5,00 5,60
325.018026I
Standard request
18,00 26,00 5,70 6,30
325.018028I
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18,00 28,00 7,30 8,00
325.020028I
Standard request
20,00 28,00 5,70 6,30
325.020030I
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20,00 30,00 7,30 8,00
325.022030I
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22,00 30,00 5,70 6,30
325.022032I
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22,00 32,00 7,30 8,00
325.025032I
Standard request
25,00 32,00 5,00 5,60
325.025033I
Standard request
25,00 33,00 5,70 6,30
325.025035I
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25,00 35,00 7,30 8,00
325.028038I
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28,00 38,00 7,30 8,00
325.028043I
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28,00 43,00 11,50 12,50
325.032040I
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32,00 40,00 5,70 6,30
325.032042I
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32,00 42,00 7,30 8,00
325.032047I
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32,00 47,00 11,50 12,50
325.036046I
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36,00 46,00 7,30 8,00
325.036051I
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36,00 51,00 11,50 12,50
325.040050I
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40,00 50,00 7,30 8,00
325.040055I
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40,00 55,00 11,50 12,50
325.042050I
Standard request
42,00 50,00 5,70 6,30
325.045055I
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45,00 55,00 7,30 8,00
325.045060I
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45,00 60,00 11,50 12,50
325.050060I
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50,00 60,00 7,30 8,00
325.050065I
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50,00 65,00 11,50 12,50
325.055063I
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55,00 63,00 5,70 6,30
325.056071I
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56,00 71,00 11,50 12,50
325.056076I
Standard request
56,00 76,00 15,00 16,00
325.063078I
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63,00 78,00 11,50 12,50
325.063083I
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63,00 83,00 15,00 16,00
325.070080I
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70,00 80,00 6,50 7,50
325.070085I
Standard request
70,00 85,00 11,50 12,50
325.0700851
Standard request
70,00 85,00 11,70 12,50
325.070090I
Standard request
70,00 90,00 15,00 16,00
325.080095I
Standard request
80,00 95,00 11,50 12,50
325.0800951
Standard request
80,00 95,00 11,70 12,50
325.080100I
Standard request
80,00 100,00 15,00 16,00
325.0901001
Standard request
90,00 100,00 6,50 7,50
325.090105I
Standard request
90,00 105,00 11,50 12,50
325.0901051
Standard request
90,00 105,00 11,70 12,50
325.090110I
Standard request
90,00 110,00 15,00 16,00
325.100120I
Standard request
100,00 120,00 14,50 16,00
325.1001205
Standard request
100,00 120,00 15,00 16,00
325.100125I
Standard request
100,00 125,00 19,00 20,00
325.110130I
Standard request
110,00 130,00 15,00 16,00
325.110135I
Standard request
110,00 135,00 19,00 20,00
325.125145I
Standard request
125,00 145,00 15,00 16,00
325.125150I
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125,00 150,00 19,00 20,00
325.140160I
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140,00 160,00 15,00 16,00
325.140165I
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140,00 165,00 19,00 20,00
325.145160I
Standard request
145,00 160,00 9,60 10,60
325.160185I
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160,00 185,00 19,00 20,00
325.160190I
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160,00 190,00 24,00 25,00
325.180205I
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180,00 205,00 19,00 20,00
325.180210I
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180,00 210,00 24,00 25,00
325.200225I
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200,00 225,00 19,00 20,00
325.200230I
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200,00 230,00 24,00 25,00
325.220250I
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220,00 250,00 24,00 25,00
325.250280I
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250,00 280,00 24,00 25,00
325.280310I
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280,00 310,00 24,00 25,00
325.320360I
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320,00 360,00 31,00 32,00
325.360400I
Standard request
360,00 400,00 31,00 32,00