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BECA 114

BECA 114
BECA 114
beca_114_3d_v1
beca_114_3d_v2

Description

The BECA 114 is a BS ring or a bonded seal composed of a metal ring with a rectangular cross-section, to the inside of which a rubber ring with a trapezoidal cross-section has been bonded and vulcanised.

Advantages

Economic solution
Can be disassembled and reused
Reliable sealing at both high and low pressures
Reduced assembly time

Technical data

Temperature

-45°C/+200°C

Medias

Mineral hydraulic oils
Water
Water/oil emulsions
gas

Breaking resistance

540 MPa depending on the material selected

Applications

Sealing under the screw heads and bolts
General mechanics
Motors
Pipe fittings
Valves

Materials

Trapezoidal ring

NBR 70 - 90 Shore A
FKM 70 - 90 Shore A
HNBR 70 - 90 Shore A
EPDM 70 - 90 Shore A

Metal ring

Cadmium-plated steel
Stainless steel

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint statique Bague BS - Housing Groove Static seal Bonded seal Usite ring - BECA 114

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

EPDM

As an Ethylene Propylene Diene Monomer copolymer, EPDM is 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 -45°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

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

Technical data

Housing Groove Static Seal Bonded Seal Usite Ring - BECA - 114

Radial extrusion gap J

The non-self-centred BECA 114 BS ring is not composed of a centring lip. The following recommendations allow for a good positioning.

Metric Max. gap of the radius J (mm)
M3 at M8.5 0.30
M9 at M33 0.35
M34 at M60 0.50

Counterbore L

Metric Counterbore ØL (mm)
M3 at M8.5 ØA +0.20
M9 at M33 ØA +0.40
M34 at M60 ØA +0.60

The overlapping of the metal ring (T) must be at least 0.70 mm and the overlapping of the rubber ring (S) must be at least 75% (S ≥ 0.75 x R).

Tightening torque

The tightening torque is a determining factor for the optimal operation of the BS ring. The table below sets out the required tightening torques.

Dimensions Torque (Nm)
Metric BSW BSP 1 ring 2 rings
up to M8 5/16 - 5.3 8.5
M10 3/8 1/8 7.1 11.4
M11 7/16 - 11.8 15.3
M12 1/2 1/4 15.8 20.5
M14 9/16 - 22.6 29.4
M16 5/8 3/8 30.5 39.7
M18 3/4 - 40.7 52.9
M20 13/16 1/2 56.5 67.8
M22 7/8 5/8 67.8 74.6
M24 1.0 3/4 73.4 73.4
from M27 1.1/16 - 79.0 79.0

Surface roughness

Roughness Contact surface area
Ra ≤ 3.0 µm
Rmax ≤ 15.0 µm
49 dimensions found
114.1E001
Standard request
BSW 6BA 6,35 4,09 3,05 0,20 / 0,38 1,22 2150
114.1E201
Standard request
M3.5 7,20 5,20 4,10 0,30 1,00 1600
114.1E002
Standard request
BSW 4BA 7,26 5,26 4,12 0,20 / 0,38 1,22 1570
114.1E301
Standard request
M3 7,50 5,00 3,60 0,30 1,00 1980
114.1E003
Standard request
BSW 2BA 8,38 6,35 5,21 0,20 / 0,38 1,22 1375
114.1E302
Standard request
M4 9,00 6,00 4,60 0,30 1,00 2000
114.1E205
Standard request
M5.5 9,20 7,20 6,20 0,30 1,00 1220
114.1E210
Standard request
M6.7 10,20 8,60 7,30 0,30 1,00 850
114.1E209
Standard request
M6.5 12,00 8,81 7,10 0,30 1,00 1560
114.1E020
Standard request
BSW 3/8 - BSP 1/8 15,88 11,48 10,37 0,25/0,51 2,03 1480
114.1E009
Standard request
BSW 7/16 19,05 13,08 11,69 0,25/0,51 2,03 1890
114.1E224
Standard request
M13 20,00 15,40 13,70 0,40 1,50 1340
114.1E315
Standard request
M13 20,10 15,20 13,80 0,40 1,50 1430
114.1E225
Standard request
M13 22,00 15,40 13,70 0,40 1,50 1810
114.1E022
Standard request
BSW 0,60 22,23 17,30 15,83 0,25/0,51 2,03 1290
114.1E228
Standard request
M15 22,70 17,78 16,00 0,40 1,50 1260
114.1E319
Standard request
M16.5 23,90 18,70 17,20 0,30 2,10 1970
114.1E231
Standard request
M17.5 24,70 20,10 18,00 0,40 1,50 1070
114.1E322
Standard request
M20.63 28,60 23,00 21,50 0,40 2,50 1130
114.1E234
Standard request
M21 28,70 23,30 21,50 0,40 2,50 1080
114.1E323
Standard request
M21 30,00 23,40 21,70 0,30 2,00 1290
114.1E325
Standard request
M23 32,00 25,40 23,70 0,40 2,00 965
114.1E240
Standard request
M27 36,00 29,00 27,20 0,40 2,00 1130
114.1E328
Standard request
M27 36,00 29,40 27,70 0,40 2,00 1060
114.1E329
Standard request
M28 36,00 30,30 28,60 0,40 2,00 720
114.1E014
Standard request
BSW 1 1/6 36,58 30,86 29,33 0,25/0,51 2,34 880
114.1E241
Standard request
M28 37,00 30,40 28,70 0,40 2,00 1030
114.1E330
Standard request
M28.5 37,50 30,90 29,20 0,40 2,00 810
114.1E331
Standard request
M30 39,00 32,40 30,70 0,40 2,00 970
114.1E242
Standard request
M30 39,00 33,00 31,00 0,40 2,00 870
114.1E332
Standard request
M33 42,00 35,40 33,70 0,40 2,00 900
114.1E243
Standard request
M33 42,00 35,80 33,70 0,40 2,00 840
114.1E244
Standard request
M33 43,00 20,10 18,00 0,40 2,00 1070
114.1E016
Standard request
BSW 1 3/8 44,45 38,99 35,94 0,25/0,51 3,25 680
114.1E246
Standard request
M39 51,00 41,90 40,00 0,40 2,50 1030
114.1E334
Standard request
M39 51,00 42,60 40,00 0,40 2,50 950
114.1E336
Standard request
M45 57,00 48,60 46,00 0,40 2,50 860
114.1E248
Standard request
M48 59,00 50,80 48,70 0,40 3,00 790
114.1E337
Standard request
M48 60,00 51,60 49,00 0,40 2,50 790
114.1E249
Standard request
M51 60,00 54,10 52,00 0,40 3,00 540
114.1E019
Standard request
BSW 2 63,50 54,74 51,69 0,25/0,51 3,25 780
114.1E250
Standard request
M52 64,50 56,40 53,30 0,40 3,00 710
114.1E251
Standard request
M60 73,00 63,00 60,70 0,40 3,00 780
114.1E038
Standard request
BSP 2 1/4 79,50 69,98 66,68 0,25/0,51 3,25 670
114.1E252
Standard request
M68 79,50 72,10 68,60 0,40 3,50 510
114.1E253
Standard request
M75 90,30 79,10 76,08 0,40 3,38 700
114.1E039
Standard request
BSP 2 1/2 90,30 79,38 76,08 0,25/0,51 3,25 680
114.1E254
Standard request
M88 101,48 92,10 89,09 0,40 3,25 510
114.1E255
Standard request
M125 143,67 132,70 127,00 0,40 5,00 420