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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. They can be assembled in grooves according to standard ISO 7425/1. Option of connecting the seal to 1 or 2 back-up rings.

Advantages

Optimal sealing in static and dynamic applications
Low friction coefficient; no stick-slip effect
Excellent abrasion and extrusion 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

50 MPa

Speed

5 m/s

Medias

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

Applications

Mobile machinery
Injection presses
Machine tools
Presses
Standard cylinders

Materials

Friction ring

Bronze-filled PTFE
Carbon-filled PTFE
GL Blue PTFE

O'Ring

NBR 70 Shore A
FKM 70 Shore A

Dimensions
Installation dimensions
Materials
Technical data

Dimensions

500.008, 500.010, 500.012, 500.014, 504.015, 500.015, 502.015, 504.016, 500.016, 502.016, 504.018, 500.018, 502.018, 504.020, 500.020, 502.020, 504.021, 500.021, 502.021, 504.022, 500.022, 502.022, 504.024, 500.024, 502.024, 504.025, 500.025, 502.025, 504.028, 500.028, 502.028, 504.030, 500.030, 502.030, 504.032, 500.032, 502.032, 504.035, 500.035, 502.035, 504.036, 500.036, 502.036, 504.038, 500.038, 502.038, 504.040, 500.040, 502.040, 504.042, 500.042, 502.042, 504.045, 500.045, 502.045, 504.048, 500.048, 502.048, 504.050, 500.050, 502.050, 504.052, 500.052, 502.052, 504.053, 500.053, 502.053, 504.055, 500.055, 502.055, 504.057, 500.057, 502.057, 504.058, 500.058, 502.058, 504.060, 500.060, 502.060, 504.062, 500.062, 502.062, 504.063, 500.063, 502.063, 504.065, 500.065, 502.065, 504.068, 500.068, 502.068, 504.070, 500.070, 502.070, 504.072, 500.072, 502.072, 504.075, 500.075, 502.075, 504.080, 500.080, 502.080, 504.082, 500.082, 502.082, 504.085, 500.085, 502.085, 504.087, 500.087, 502.087, 504.090, 500.090, 502.090, 504.092, 500.092, 502.092, 504.095, 500.095, 502.095, 504.100, 500.100, 502.100, 504.105, 500.105, 502.105, 504.108, 500.108, 502.108, 504.110, 500.110, 502.110, 504.115, 500.115, 502.115, 504.120, 500.120, 502.120, 504.125, 500.125, 502.125, 504.127, 500.127, 502.127, 504.130, 500.130, 502.130, 504.132, 500.132, 502.132, 504.135, 500.135, 502.135, 504.140, 500.140, 502.140, 504.145, 500.145, 502.145, 504.150, 500.150, 502.150, 504.155, 500.155, 502.155, 504.160, 500.160, 502.160, 504.165, 500.165, 502.165, 504.170, 500.170, 502.170, 504.175, 500.175, 502.175, 504.180, 500.180, 502.180, 504.185, 500.185, 502.185, 504.190, 500.190, 502.190, 504.195, 500.195, 502.195, 504.200, 500.200, 502.200, 504.205, 500.205, 502.205, 504.210, 500.210, 502.210, 504.215, 500.215, 502.215, 504.220, 500.220, 502.220, 504.230, 500.230, 502.230, 504.240, 500.240, 502.240, 504.250, 500.250, 502.250, 504.260, 500.260, 502.260, 504.270, 500.270, 502.270, 504.280, 500.280, 502.280, 504.290, 500.290, 502.290, 504.300, 500.300, 502.300, 504.310, 500.310, 502.310, 504.320, 500.320, 502.320, 504.330, 500.330, 502.330, 504.340, 500.340, 502.340, 504.350, 500.350, 502.350, 504.360, 500.360, 502.360, 504.370, 500.370, 502.370, 504.380, 500.380, 502.380, 504.390, 500.390, 502.390, 504.400, 500.400, 502.400, 504.410, 500.410, 502.410, 504.420, 500.420, 502.420, 504.430, 500.430, 502.430, 504.440, 500.440, 502.440, 504.450, 500.450, 502.450, 504.460, 500.460, 502.460, 504.470, 500.470, 502.470, 504.480, 500.480, 502.480, 504.490, 500.490, 502.490, 504.500, 500.500, 502.500, 504.550, 500.550, 502.550, 504.600, 500.600, 502.600, 504.650, 500.650, 502.650, 504.700, 500.700, 502.700, 504.750, 500.750, 502.750, 504.800, 500.800, 502.800, 504.850, 500.850, 502.850, 504.900, 500.900, 502.900, 504.950, 500.950, 502.950
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

For special applications > 40 MPa, we recommend using an H8/f8 tolerance (bore/piston) or selecting other more suitable materials. Please contact our experts.

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/+100°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
10 MPa 20 MPa 40 MPa
2.45 0.30 0.20 0.15
3.75 0.40 0.25 0.15
5.50 0.40 0.25 0.20
7.75 0.50 0.30 0.20
10.50 0.60 0.35 0.25
12.25 0.60 0.35 0.25
14.00 0.70 0.50 0.30
19.00 1.00 0.70 0.60

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
502.700
Standard request
 700,00 675,50 8,10
504.750
Standard request
 750,00 712,00 13,80
500.750
Standard request
 750,00 722,00 9,50
502.750
Standard request
 750,00 725,50 8,10
504.800
Standard request
 800,00 762,00 13,80
500.800
Standard request
 800,00 772,00 9,50
502.800
Standard request
 800,00 775,50 8,10
504.850
Standard request
 850,00 812,00 13,80
500.850
Standard request
 850,00 822,00 9,50
502.850
Standard request
 850,00 825,50 8,10
504.900
Standard request
 900,00 862,00 13,80
500.900
Standard request
 900,00 872,00 9,50
502.900
Standard request
 900,00 875,50 8,10
504.950
Standard request
 950,00 912,00 13,80
500.950
Standard request
 950,00 922,00 9,50
502.950
Standard request
 950,00 925,50 8,10
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