BECA 340 - 349

BECA 340 - 349
BECA 340 - 349
beca_340_349_3d_v1
beca_340_349_3d_v2

Description

The BECA 340 profile is a single acting rod seal composed of a profiled, filled PTFE U-ring type seal and a V-Shaped spring that is resistant to corrosion.

The BECA 349 profile is specially designed for applications where the seal is in contact with food products. It is characterised by a silicone overmoulding on the inside of the seal, which completely hides the V-Shaped spring, thus preventing impurities from accumulating in this hard-to-clean area.

Advantages

Wide temperature range and excellent chemical resistance
Low friction coefficient; no stick-slip effect
Excellent abrasion resistance
Good dimensional stability
Non-toxic material

Technical data

Temperature

-200°C/+260°C

Pressure

40 MPa

Speed

15 m/s

Medias

Practically all types of fluids, and chemical and gas products

Applications

Food & Beverage
Medical
Pharmaceutical
Static hydraulics

Materials

Profiled seal

Carbon-filled PTFE
GL Blue PTFE
PE-UHMW

V-Shaped spring

Stainless steel

Dimensions
Installation dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de tige - Housing Groove Gland Rod seal 340 - 349

Installation dimensions

Housing Groove Gland Rod Seal - 340 - 349

Installation dimensions

Series Rod diameter
Ød1 h9
Groove diameter Groove width Radial section Step height
Standard series Extended series ØD1 H9 L1 0/+0.20 S ØD1 - A
340.0* 3.0 - 9.9 3.0 - 40.0 d1 + 2.90 2.40 1.45 0.4
340.1 10.0 - 19.9 6.0 - 200.0 d1 + 4.50 3.60 2.25 0.6
340.2 20.0 - 39.9 10.0 - 400.0 d1 + 6.20 4.80 3.10 0.7
340.3 40.0 - 119.9 20.0 - 700.0 d1 + 9.40 7.10 4.70 0.8
340.4 120.0 - 629.9 35.0 - 999.9 d1 + 12.20 9.50 6.10 0.9
340.5 630.0 - 999.9 80.0 - 999.9 d1 + 19.00 15.00 9.50 0.9
 
For special applications > 40 MPa, we recommend using an H8/f8 tolerance (groove/rod) or selecting other more suitable materials. Please contact our experts.
*Only 340.0 profiles are fitted with an O'Ring instead of a V-Shaped spring.

Materials

Profiled seal V-Shaped spring Contact surface area
Standard code ISO code Material Colour Characteristics Code Type of material Service temperature
DP P Virgin PTFE White Resistance to chemical products
Sealing water
Dielectric
Non-stick
Low friction coefficient
Food & Beverage
I X10 Cr Ni 18-8 -200°C/+260°C Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface
DC C PTFE
+25% Carbon
Grey

Improvement

  • Wear properties
  • Compression set

Good resistance to chemical products
Thermal and electrical conductivity
Anti-static

Efficient as part of dynamic
applications with compression

CG C PTFE
+ 23% Carbon
+ 2% Graphite
Black
DV V PTFE
+ 25 % Glass
Blue Improvement
  • Wear properties
  • Mechanical strength
Slightly more abrasive but can be
corrected with the addition of MOS2
Chemical and dielectric properties preserved

Well suited to applications with
rotating and simultaneous alternating movements
Steel
Chrome steel
Cast iron
VM M PTFE
+ 15 % Glass
+ 5% MoS2
Grey
DX X GL Blue PTFE
+ Glass
+ Metal oxides
Turquoise blue Compression resistant
Wear resistant
Excellent chemical stability
Good thermal conductivity
DG G PTFE
+ 15% Graphite
Black Improvement
  • Wear properties
Reduced wear on metal parts
Self-lubricating
Thermal and electrical conductivity
Low permeability
Good friction coefficient
Anti-static

Efficient as part of dynamic
dynamic applications with self-lubrication
Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface
K1 K PTFE
+ 10% Ekonol
Light brown Improvement
  • Better abrasion resistance
  • Better dimensional stability at high temperatures
Use up to +300°C
Good friction coefficient and low permeability
K2 K PTFE
+ 20% Ekonol
Light brown
DB B PTFE
+ 60% Bronze
Dark brown Improvement
  • Wear properties
  • Deformation and creep resistance
  • Compression resistant
Self-lubricating
Electrical and thermal conductivity
Does not alter metal parts
Reduced resistance to certain chemical products

Used for dynamic seals with a strong compression and low level of wear
Steel
Chrome steel
Cast iron
B4 B PTFE
+ 40% Bronze
Dark brown
HG HG PE-UHMW White or off-white Excellent wear resistance on contact with water and air I X10 Cr Ni 18-8 -70°C/+80°C Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface

Other grades of materials are available depending on your specificities.

Technical data

Housing Groove Gland Rod Seal - 340 - 349

Extrusion gaps

Radial section
S
Radial extrusion gap
F/2
2 MPa 10 MPa 20 MPa 40 MPa
1.45 0.20 0.10 0.08 0.05
2.25 0.25 0.15 0.10 0.07
3.10 0.35 0.20 0.15 0.08
4.70 0.50 0.25 0.20 0.10
6.10 0.60 0.30 0.25 0.12
9.50 0.90 0.50 0.40 0.20

Surface roughness

Roughness Dynamic surface area Static surface area Groove flanks
Ra 0.05 - 0.2 µm ≤ 1.6 µm ≤ 3.2 µm
Rz 0.4 - 1.6 µm ≤ 6.3 µm ≤ 10.0 µm
Rmax 0.63 - 2.5 µm ≤ 10.0 µm ≤ 16.0 µm

Chamfers and radius

Radial section
S
Radius
R1
Chamfer
C
1.45 0.40 3.00
2.25 0.40 3.00
3.10 0.60 3.00
4.70 0.80 3.00
6.10 0.80 3.50
9.50 0.80 6.50
70 dimensions found
340.0004
Standard request
4,00 6,90 2,10 2,40
340.0005
Standard request
5,00 7,90 2,10 2,40
340.0006
Standard request
6,00 8,90 2,10 2,40
340.0007
Standard request
7,00 9,90 2,10 2,40
340.0008
Standard request
8,00 10,90 2,10 2,40
340.1010
Standard request
10,00 14,50 3,30 3,60
340.1011
Standard request
11,00 15,50 3,30 3,60
340.1012
Standard request
12,00 16,50 3,30 3,60
340.1014
Standard request
14,00 18,50 3,30 3,60
340.1015
Standard request
15,00 19,50 3,30 3,60
340.1016
Standard request
16,00 20,50 3,30 3,60
340.1018
Standard request
18,00 22,50 3,30 3,60
340.2020
Standard request
20,00 26,20 4,40 4,80
340.2022
Standard request
22,00 28,20 4,40 4,80
340.2025
Standard request
25,00 31,20 4,40 4,80
340.2028
Standard request
28,00 34,20 4,40 4,80
340.2030
Standard request
30,00 36,20 4,40 4,80
340.2032
Standard request
32,00 38,20 4,40 4,80
340.2033
Standard request
33,00 39,20 4,40 4,80
340.2035
Standard request
35,00 41,20 4,40 4,80
340.2036
Standard request
36,00 42,20 4,40 4,80
340.2038
Standard request
38,00 44,20 4,40 4,80
340.3040
Standard request
40,00 49,40 6,50 7,10
340.3042
Standard request
42,00 51,40 6,50 7,10
340.3045
Standard request
45,00 54,40 6,50 7,10
340.3048
Standard request
48,00 57,40 6,50 7,10
340.3050
Standard request
50,00 59,40 6,50 7,10
340.3052
Standard request
52,00 61,40 6,50 7,10
340.3055
Standard request
55,00 64,40 6,50 7,10
340.3056
Standard request
56,00 65,40 6,50 7,10
340.3060
Standard request
60,00 69,40 6,50 7,10
340.3063
Standard request
63,00 72,40 6,50 7,10
340.3065
Standard request
65,00 74,40 6,50 7,10
340.3070
Standard request
70,00 79,40 6,50 7,10
340.3072
Standard request
72,00 81,40 6,50 7,10
340.3075
Standard request
75,00 84,40 6,50 7,10
340.3080
Standard request
80,00 89,40 6,50 7,10
340.3085
Standard request
85,00 94,40 6,50 7,10
340.3090
Standard request
90,00 99,40 6,50 7,10
340.3095
Standard request
95,00 104,40 6,50 7,10
340.3100
Standard request
100,00 109,40 6,50 7,10
340.3105
Standard request
105,00 114,40 6,50 7,10
340.3110
Standard request
110,00 119,40 6,50 7,10
340.3115
Standard request
115,00 124,40 6,50 7,10
340.3116
Standard request
116,00 125,40 6,50 7,10
340.4120
Standard request
120,00 132,20 8,80 9,50
340.4125
Standard request
125,00 137,20 8,80 9,50
340.4130
Standard request
130,00 142,20 8,80 9,50
340.4135
Standard request
135,00 147,20 8,80 9,50
340.4140
Standard request
140,00 152,20 8,80 9,50
340.4150
Standard request
150,00 162,20 8,80 9,50
340.4160
Standard request
160,00 172,20 8,80 9,50
340.4165
Standard request
165,00 177,20 8,80 9,50
340.4170
Standard request
170,00 182,20 8,80 9,50
340.4180
Standard request
180,00 192,20 8,80 9,50
340.4190
Standard request
190,00 202,20 8,80 9,50
340.4200
Standard request
200,00 212,20 8,80 9,50
340.4210
Standard request
210,00 222,20 8,80 9,50
340.4220
Standard request
220,00 232,20 8,80 9,50
340.4230
Standard request
230,00 242,20 8,80 9,50
340.4238
Standard request
238,00 250,20 8,80 9,50
340.4240
Standard request
240,00 252,20 8,80 9,50
340.4250
Standard request
250,00 262,20 8,80 9,50
340.4280
Standard request
280,00 292,20 8,80 9,50
340.4300
Standard request
300,00 312,20 8,80 9,50
340.4315
Standard request
315,00 327,20 8,80 9,50
340.4320
Standard request
320,00 332,20 8,80 9,50
340.4350
Standard request
350,00 362,20 8,80 9,50
340.4360
Standard request
360,00 372,20 8,80 9,50
340.4400
Standard request
400,00 412,20 8,80 9,50