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BECA 500

BECA 500 - 502 - 504
beca_500_502_504_3d_v1
beca_500_502_504_3d_v2

Description

The BECA 500 profile is a double acting composite piston seal composed of a filled PTFE friction ring and a pre-tightened rubber O'Ring. It follows the bore diameters, in line with the standards MIL-G-5514F and AS4716.

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

-40°C/+200°C

Pressure

35 MPa

Speed

5 m/s

Medias

Hydraulic fluids with a mineral oil base
Fire retardant hydraulic fluids
Bio oils
Phosphate esters
Water

Applications

Actuators
Brakes systems
Flight controls
Engine systems
Landing gear

Materials

Friction ring

Bronze-filled PTFE
Carbon-filled PTFE
GL Blue PTFE

O'Ring

NBR 70 Shore A
FKM 70 Shore A

Dimensions
Materials
Technical data

Dimensions

500.A010, 500.A011, 500.A012, 500.A013, 500.A014, 500.A015, 500.A016, 500.A017, 500.A018, 500.A019, 500.A020, 500.A021, 500.A022, 500.A023, 500.A024, 500.A025, 500.A026, 500.A027, 500.A028, 500.A110, 500.A111, 500.A112, 500.A113, 500.A114, 500.A115, 500.A116, 500.A117, 500.A118, 500.A119, 500.A120, 500.A121, 500.A122, 500.A123, 500.A124, 500.A125, 500.A126, 500.A127, 500.A128, 500.A129, 500.A130, 500.A131, 500.A132, 500.A133, 500.A134, 500.A135, 500.A136, 500.A137, 500.A138, 500.A139, 500.A140, 500.A141, 500.A142, 500.A143, 500.A144, 500.A145, 500.A146, 500.A147, 500.A148, 500.A149, 500.A210, 500.A211, 500.A212, 500.A213, 500.A214, 500.A215, 500.A216, 500.A217, 500.A218, 500.A219, 500.A220, 500.A221, 500.A222, 500.A223, 500.A224, 500.A225, 500.A226, 500.A227, 500.A228, 500.A229, 500.A230, 500.A231, 500.A232, 500.A233, 500.A234, 500.A235, 500.A236, 500.A237, 500.A238, 500.A239, 500.A240, 500.A241, 500.A242, 500.A243, 500.A244, 500.A245, 500.A246, 500.A247, 500.A325, 500.A326, 500.A327, 500.A328, 500.A329, 500.A330, 500.A331, 500.A332, 500.A333, 500.A334, 500.A335, 500.A336, 500.A337, 500.A338, 500.A339, 500.A340, 500.A341, 500.A342, 500.A343, 500.A344, 500.A345, 500.A346, 500.A347, 500.A348, 500.A349, 500.A425, 500.A426, 500.A427, 500.A428, 500.A429, 500.A430, 500.A431, 500.A432, 500.A433, 500.A434, 500.A435, 500.A436, 500.A437, 500.A438, 500.A439, 500.A440, 500.A441, 500.A442, 500.A443, 500.A444, 500.A445, 500.A446, 500.A447, 500.A448, 500.A449, 500.A450, 500.A451, 500.A452, 500.A453, 500.A454, 500.A455, 500.A456, 500.A457, 500.A458, 500.A459, 500.A460
Installation drawingLogement Gorge Joint de piston aéronautique - Housing Groove Gland aerospace piston seal BECA 500

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 -40°C/+145°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 -40°C/+145°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 -40°C/+145°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 -40°C/+145°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 -40°C/+145°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 -40°C/+145°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 UHMW-PE 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 Aerospace Piston Seal - BECA 500

Groove widths and extrusion gaps

Series Width
L1 min - max		 Extrusion gaps
F		 O'Ring
Ød2
010 - 012 2.06 - 2.19 0.10 1.78
013 - 028 0.13
110 - 149 3.20 - 3.33 0.13 2.62
210 - 247 4.22 - 4.35 0.15 3.53
325 - 352 6.27 - 6.40 0.18 5.33
428 - 460 8.13 - 8.26 0.25 6.99

Tolerances on the bore diameters and groove diameters

Series Tolerance on
bore diameter
ØD1		 Tolerance on
groove diameter
Ød1
010 - 012 0/+0.025 -0.025/0
013 - 349 0/+0.050 -0.050/0
350 - 446 0/+0.076 -0.076/0
447 - 460 0/+0.100 -0.076/0

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

Radius and chamfers

Series Radius
R1 min - max		 Radius
R2 min - max		 Chamfer
C
010 - 149 0.13 - 0.26 0.13 - 0.38 3.00
210 - 247 0.13 - 0.26 0.25 - 0.64 4.00
325 - 460 0.13 - 0.26 0.50 - 0.73 5.00
158 dimensions found
500.A328
Standard request
 328 56,97 42,90 6,27 327
500.A329
Standard request
 329 60,15 46,08 6,27 328
500.A330
Standard request
 330 63,32 49,25 6,27 329
500.A331
Standard request
 331 66,50 52,43 6,27 330
500.A332
Standard request
 332 69,67 55,60 6,27 331
500.A333
Standard request
 333 72,85 58,78 6,27 332
500.A334
Standard request
 334 76,02 61,95 6,27 333
500.A335
Standard request
 335 79,20 65,13 6,27 334
500.A336
Standard request
 336 82,37 68,30 6,27 335
500.A337
Standard request
 337 85,55 71,48 6,27 336
500.A338
Standard request
 338 88,72 74,65 6,27 337
500.A339
Standard request
 339 91,90 77,83 6,27 338
500.A340
Standard request
 340 95,07 81,00 6,27 339
500.A341
Standard request
 341 98,25 84,18 6,27 340
500.A342
Standard request
 342 101,42 87,35 6,27 341
500.A343
Standard request
 343 104,60 90,53 6,27 342
500.A344
Standard request
 344 107,77 93,70 6,27 343
500.A345
Standard request
 345 110,95 96,88 6,27 344
500.A346
Standard request
 346 114,12 100,05 6,27 345
500.A347
Standard request
 347 117,30 103,23 6,27 346
500.A348
Standard request
 348 120,47 106,40 6,27 347
500.A349
Standard request
 349 123,65 109,58 6,27 348
500.A425
Standard request
 350 126,34 112,27 6,27 349
500.A426
Standard request
 351 129,51 115,44 6,27 350
500.A427
Standard request
 352 132,69 118,62 6,27 351
500.A428
Standard request
 428 135,86 116,81 8,13 352
500.A429
Standard request
 429 139,04 119,99 8,13 428
500.A430
Standard request
 430 142,21 126,16 8,13 429
500.A431
Standard request
 431 145,39 126,34 8,13 430
500.A432
Standard request
 432 148,56 129,51 8,13 431
500.A433
Standard request
 433 151,74 132,69 8,13 432
500.A434
Standard request
 434 154,91 135,86 8,13 433
500.A435
Standard request
 435 158,09 139,04 8,13 434
500.A436
Standard request
 436 161,26 142,21 8,13 435
500.A437
Standard request
 437 164,44 145,39 8,13 436
500.A438
Standard request
 438 170,79 151,74 8,13 437
500.A439
Standard request
 439 177,14 158,09 8,13 438
500.A440
Standard request
 440 183,49 164,44 8,13 439
500.A441
Standard request
 441 189,84 170,79 8,13 440
500.A442
Standard request
 442 196,19 177,14 8,13 441
500.A443
Standard request
 443 202,54 183,49 8,13 442
500.A444
Standard request
 444 208,89 189,84 8,13 443
500.A445
Standard request
 445 215,24 196,19 8,13 444
500.A446
Standard request
 446 227,94 208,89 8,13 445
500.A447
Standard request
 447 240,64 221,59 8,13 446
500.A448
Standard request
 448 253,34 234,29 8,13 447
500.A449
Standard request
 449 266,04 246,99 8,13 448
500.A450
Standard request
 450 278,74 259,69 8,13 449
500.A451
Standard request
 451 291,44 272,39 8,13 450
500.A452
Standard request
 452 304,14 285,09 8,13 451
500.A453
Standard request
 453 316,84 297,79 8,13 452
500.A454
Standard request
 454 329,54 310,49 8,13 453
500.A455
Standard request
 455 342,24 323,19 8,13 454
500.A456
Standard request
 456 354,94 335,89 8,13 455
500.A457
Standard request
 457 367,64 348,59 8,13 456
500.A458
Standard request
 458 380,34 361,29 8,13 457
500.A459
Standard request
 459 393,04 373,99 8,13 458
500.A460
Standard request
 460 405,74 386,69 8,13 459
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