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BECA 230/B

BECA 230/B
BECA 230/B
beca_230_b_3d_v1
beca_230_b_3d_v2

Description

The BECA 230/B profile is a rubber U-ring type single acting rod seal with asymmetrical sealing lips and a second sealing lip. It can be assembled in a groove according to standard ISO 5597.

Advantages

Optimised sealing effect
Excellent resistance to high temperatures depending on the type of material chosen
Assembly by deformation in closed groove

Technical data

Temperature

-30°C/+200°C

Pressure

15 MPa

Speed

0.5 m/s

Medias

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

Applications

Mobile machinery
Machine tools
Presses
Standard cylinders

Materials

NBR 70 Shore A
NBR 85 Shore A
FKM 85 Shore A

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de tige - Housing Groove Gland Rod seal BECA 230/B

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

EPDM

As an Ethylene Propylene Diene Monomer copolymer, EPDM is a rubber commonly used for hot water taps, cooling systems, brake systems, dishwashers and washing machines.

Chemical resistance Hot water and steam up to +150°C
Glycol-based brake fluids (Dot 3 & 4) and silicone-based brake fluids (Dot 5)
Organic and inorganic acids
Cleaning agents, sodium and potassium alkalis
Hydraulic fluids (HFD-R)
Silicone oils and greases
Polar solvents (alcohols, ketones and esters)
Atmospheric and ozone agents
Compatibility issue Mineral oils and greases
Hydrocarbons
Low impermeability to gas
Temperature range -50°C/+150°C

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
-40°C / +200°C with our FKM GLT on request

HNBR

This HNBR-based rubber is obtained through selective hydrogenation of the NBR's butadiene groups. It is commonly used for power-assisted steering and for air conditioning.

Chemical resistance Aliphatic hydrocarbons
Mineral and vegetable oils and greases
Fire-resistant fluids (HFA, HFB and HFC)
Diluted acids, saline solutions and bases for operation at an average temperature
Water and steam up to +150°C
Atmospheric and ozone agents
Compatibility issue Chlorinated hydrocarbons
Polar solvents (ketones, esters and ethers)
Strong acids
Temperature range -30°C/+150°C

ACM

Polymers containing ethyl acrylate (or butyl acrylate) have a small amount of monomer, which is necessary for cross-linking; ACM is a material with better heat resistance than NBR. It is often used for automatic gearboxes.

Chemical resistance Mineral oils (motor oils, gear box oils, ATF oils)
Atmospheric and ozone agents
Compatibility issue Glycol-based brake fluids (Dot 3 & 4)
Aromatic and chlorinated hydrocarbons
Water and steam
Acids, alkalis and amines.
Temperature range - 25°C to + 150°C

VMQ

This VMQ-based rubber is very often used in fuel systems.

Chemical resistance Animal and vegetable oils and greases
Water for operation at an average temperature
Diluted saline solutions
Atmospheric and ozone agents
Compatibility issue Superheated steam up to +120°C
Chlorinated hydrocarbons with a low molecular weight (trichlorethylene)
Aromatic hydrocarbons (benzene, toluene)
Temperature range -60°C/+200°C

The table below gives an overview of the physical, chemical and mechanical characteristics for each of the materials.

Characteristics/Materials ACM EPDM FKM HNBR NBR VMQ
Abrasion resistant 2 2 2 2 2 4
Resistance to acids 4 2 1 1 3 3
Chemical resistance 4 1 1 2 2 2
Resistance to cold 4 2 4 2 2 2
Dynamic properties 3 2 2 1 2 4
Electrical properties 3 2 4 3 3 1
Flame resistant 4 4 1 4 4 3
Heat resistant 1 2 1 1 2 1
Sealing water 1 2 2 2 2 4
Oil resistant 1 4 1 1 1 2
Ozone resistant 1 1 1 2 4 1
Tearing resistant 2 1 3 2 2 4
Traction resistant 3 1 1 1 2 4
Water/vapour resistant 4 1 3 1 2 3
Resistance to atmospheric agents 1 1 1 2 3 1

1. Excellent properties 2. Good properties 3. Average properties 4. Poor properties

Technical data

Housing Groove Gland Rod Seal - BECA 230/B

Extrusion gaps

Pressure
MPa
Radial extrusion gap
F/2
2.5 MPa 0.45
5.0 MPa 0.35
7.5 MPa 0.30
10 MPa 0.25
15 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
3.50 0.20 0.40 2.00
5.00 0.40 0.60 2.50
7.50 0.80 1.00 4.00
10.00 0.80 1.00 5.00
18 dimensions found
230.0121673
Standard request
12,00 16,70 2,70 3,00
230.121673S
Standard request
12,00 16,70 2,70 3,00
230.0141873
Standard request
14,00 18,70 2,70 3,00
230.141873S
Standard request
14,00 18,70 2,70 3,00
230.0151973
Standard request
15,00 19,70 2,70 3,00
230.0162073
Standard request
16,00 20,70 2,70 3,00
230.16203K8
Standard request
16,00 20,70 2,70 3,00
230.162073S
Standard request
16,00 20,70 2,70 3,00
230.0160226
Standard request
16,00 22,00 5,50 6,00
230.0202654
Standard request
20,00 26,50 3,70 4,00
230.202654S
Standard request
20,00 26,50 3,70 4,00
230.0232954
Standard request
23,00 29,50 3,70 4,00
230.0283454
Standard request
28,00 34,50 3,70 4,00
230.0300406
Standard request
30,00 40,00 6,00 6,50
230.6030040
Standard request
30,00 40,00 6,00 7,00
230.7030040
Standard request
30,00 40,00 7,00 8,00
230.0450557
Standard request
45,00 55,00 7,00 7,50
230.0891029
Standard request
89,00 102,00 8,56 9,56