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BECA 500 - 502 - 504

BECA 500 - 502 - 504
BECA 500 - 502 - 504
beca_500_502_504_3d_v1
beca_500_502_504_3d_v2

Description

The BECA 500 - 502 - 504 profiles are double acting composite piston seals composed of a filled PTFE friction ring and pre-tightened rubber O'Ring.

Advantages

Optimal sealing in static and dynamic applications
Low friction coefficient; no stick-slip effect
Excellent abrasion resistance
Wide temperature range and excellent chemical resistance, depending on the material selected for the O'Ring

Technical data

Temperature

-30°C/+200°C

Pressure

1.6 MPa (5.0 MPa max)

Speed

5 m/s

Medias

Lubricated air
Oil-free air
Non-aggressive gases

Applications

Shock absorbers
Distributor
Standard cylinders

Materials

Friction ring

Bronze-filled PTFE
Carbon-filled PTFE
PE-UHMW

O'Ring

NBR 70 Shore A
HNBR 70 Shore A
FKM 70 Shore A

Dimensions
Installation dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Joint de piston - Housing Groove Gland Piston seal BECA 500 - 502 - 504

Installation dimensions

Housing Groove Gland Piston seal - BECA 500 - 502 - 504

Installation dimensions

Bore diameter
ØD1 H9
Groove diameter Groove width Radial section O'Ring
cross-section
BECA 500
Standard
series
BECA 502
Light
series
BECA 504
Heavy-duty
series
Ød1 h9 L1 0/+0.20 S Ød2
8.0 - 14.9 15.0 - 39.9 --- D1 - 4.90 2.20 2.45 1.78
15.0 - 39.9 40.0 - 79.9 --- D1 - 7.50 3.20 3.75 2.62
40.0 - 79.9 80.0 - 132.9 15.0 - 39.9 D1 - 11.00 4.20 5.50 3.53
80.0 - 132.9 133.0 - 329.9 40.0 - 79.9 D1 - 15.50 6.30 7.75 5.33
133.0 - 329.9 330.0 - 669.9 80.0 - 132.9 D1 - 21.00 8.10 10.50 6.99
330.0 - 669.9 670.0 - 999.9 133.0 - 329.9 D1 - 24.50 8.10 12.25 6.99
670.0 - 999.9 1000.0 - ** 330.0 - 669.9 D1 - 28.00 9.50 14.00 8.40
1000.0 - ** --- 1000.0 - ** D1 - 38.00 13.80 19.00 12.00

Materials

Friction ring O'Ring 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
K6 NBR 70 Shore A -30°C/+100°C Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
F6 VMQ 70
Shore A
-60°C/+200°C
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

K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
CG C PTFE
+ 23% Carbon
+ 2% Graphite
Black K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
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
K6 NBR 70 Shore A -30°C/+100°C Steel
Chrome steel
Cast iron
G6 FKM 70 Shore A -20°C/+200°C
VM M PTFE
+ 15 % Glass
+ 5% MoS2
Grey K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
DX X GL Blue PTFE
+ Glass
+ Metal oxides
Turquoise blue Compression resistant
Wear resistant
Excellent chemical stability
Good thermal conductivity
K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
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
K6 NBR 70 Shore A -30°C/+100°C Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
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
K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
K2 K PTFE
+ 20% Ekonol
Light brown K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
C6 EPDM 70 Shore A -45°C/+150°C
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
K6 NBR 70 Shore A -30°C/+100°C Steel
Chrome steel
Cast iron
G6 FKM 70 Shore A -20°C/+200°C
B4 B PTFE
+ 40% Bronze
Dark brown K6 NBR 70 Shore A -30°C/+100°C
G6 FKM 70 Shore A -20°C/+200°C
HG HG PE-UHMW White or off-white Excellent wear resistance on contact with water and air K6 NBR 70 Shore A -30°C/+80°C Steel
Stainless steel
Chrome steel
Aluminium
Bronze
Cast iron
Treated surface
PU U Polyurethane Blue Large mechanical resistance
Good abrasion and wear resistance
High elastic modulus
Good flexibility
Very good ozone and oxidation resistance
K6 NBR 70 Shore A -30°C/+90°C
PUHT U High-temperature polyurethane White or off-white K6 NBR 70 Shore A -30°C/+110°C

Other grades of materials are available depending on your specificities.

Technical data

Housing Groove Gland Piston seal - BECA 500 - 502 - 504

Extrusion gaps

Radial section
S
Radial extrusion gap
F/2
0.0 to 5.0 MPa
2.45 0.20
3.75 0.25
5.50 0.40
7.75 0.50
10.50 0.70
12.25 0.90
14.00 0.90
19.00 1.00

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
Radius
R2
Chamfer
C
2.45 0.30 0.40 3.00
3.75 0.30 0.60 3.00
5.50 0.30 1.00 3.00
7.75 0.30 1.30 5.00
10.50 0.30 1.80 6.00
12.25 0.30 1.80 8.00
14.00 0.30 2.50 10.00
19.00 0.30 3.00 12.00
316 dimensions found
500.008
Standard request
8,00 3,10 2,20
500.010
Standard request
10,00 5,10 2,20
500.012
Standard request
12,00 7,10 2,20
500.014
Standard request
14,00 9,10 2,20
504.015
Standard request
15,00 4,00 4,20
500.015
Standard request
15,00 7,50 3,20
502.015
Standard request
15,00 10,10 2,20
504.016
Standard request
16,00 5,00 4,20
500.016
Standard request
16,00 8,50 3,20
502.016
Standard request
16,00 11,10 2,20
504.018
Standard request
18,00 7,00 4,20
500.018
Standard request
18,00 10,50 3,20
502.018
Standard request
18,00 13,10 2,20
504.020
Standard request
20,00 9,00 4,20
500.020
Standard request
20,00 12,50 3,20
502.020
Standard request
20,00 15,10 2,20
504.021
Standard request
21,00 10,00 4,20
500.021
Standard request
21,00 13,50 3,20
502.021
Standard request
21,00 16,10 2,20
504.022
Standard request
22,00 11,00 4,20
500.022
Standard request
22,00 14,50 3,20
502.022
Standard request
22,00 17,10 2,20
504.024
Standard request
24,00 13,00 4,20
500.024
Standard request
24,00 16,50 3,20
502.024
Standard request
24,00 19,10 2,20
504.025
Standard request
25,00 14,00 4,20
500.025
Standard request
25,00 17,50 3,20
502.025
Standard request
25,00 20,10 2,20
504.028
Standard request
28,00 17,00 4,20
500.028
Standard request
28,00 20,50 3,20
502.028
Standard request
28,00 23,10 2,20
504.030
Standard request
30,00 19,00 4,20
500.030
Standard request
30,00 22,50 3,20
502.030
Standard request
30,00 25,10 2,20
504.032
Standard request
32,00 21,00 4,20
500.032
Standard request
32,00 24,50 3,20
502.032
Standard request
32,00 27,10 2,20
504.035
Standard request
35,00 24,00 4,20
500.035
Standard request
35,00 27,50 3,20
502.035
Standard request
35,00 30,10 2,20
504.036
Standard request
36,00 25,00 4,20
500.036
Standard request
36,00 28,50 3,20
502.036
Standard request
36,00 31,10 2,20
504.038
Standard request
38,00 27,00 4,20
500.038
Standard request
38,00 30,50 3,20
502.038
Standard request
38,00 33,10 2,20
504.040
Standard request
40,00 24,50 6,30
500.040
Standard request
40,00 29,00 4,20
502.040
Standard request
40,00 32,50 3,20
504.042
Standard request
42,00 26,50 6,30
500.042
Standard request
42,00 31,00 4,20
502.042
Standard request
42,00 34,50 3,20
504.045
Standard request
45,00 29,50 6,30
500.045
Standard request
45,00 34,00 4,20
502.045
Standard request
45,00 37,50 3,20
504.048
Standard request
48,00 32,50 6,30
500.048
Standard request
48,00 37,00 4,20
502.048
Standard request
48,00 40,50 3,20
504.050
Standard request
50,00 34,50 6,30
500.050
Standard request
50,00 39,00 4,20
502.050
Standard request
50,00 42,50 3,20
504.052
Standard request
52,00 36,50 6,30
500.052
Standard request
52,00 41,00 4,20
502.052
Standard request
52,00 44,50 3,20
504.053
Standard request
53,00 37,50 6,30
500.053
Standard request
53,00 42,00 4,20
502.053
Standard request
53,00 45,50 3,20
504.055
Standard request
55,00 39,50 6,30
500.055
Standard request
55,00 44,00 4,20
502.055
Standard request
55,00 47,50 3,20
504.057
Standard request
57,00 41,50 6,30
500.057
Standard request
57,00 46,00 4,20
502.057
Standard request
57,00 49,50 3,20
504.058
Standard request
58,00 42,50 6,30
500.058
Standard request
58,00 47,00 4,20
502.058
Standard request
58,00 50,50 3,20
504.060
Standard request
60,00 44,50 6,30
500.060
Standard request
60,00 49,00 4,20
502.060
Standard request
60,00 52,50 3,20
504.062
Standard request
62,00 46,50 6,30
500.062
Standard request
62,00 51,00 4,20
502.062
Standard request
62,00 54,50 3,20
504.063
Standard request
63,00 47,50 6,30
500.063
Standard request
63,00 52,00 4,20
502.063
Standard request
63,00 55,50 3,20
504.065
Standard request
65,00 49,50 6,30
500.065
Standard request
65,00 54,00 4,20
502.065
Standard request
65,00 57,50 3,20
504.068
Standard request
68,00 52,50 6,30
500.068
Standard request
68,00 57,00 4,20
502.068
Standard request
68,00 60,50 3,20
504.070
Standard request
70,00 54,50 6,30
500.070
Standard request
70,00 59,00 4,20
502.070
Standard request
70,00 62,50 3,20
504.072
Standard request
72,00 56,50 6,30
500.072
Standard request
72,00 61,00 4,20
502.072
Standard request
72,00 64,50 3,20
504.075
Standard request
75,00 59,50 6,30
500.075
Standard request
75,00 64,00 4,20
502.075
Standard request
75,00 67,50 3,20
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