EN
Telephone

+33 (0)2 51 42 13 76

Search
Quality & expertise
for your sealing needs

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

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.A010
Standard request
010 9,14 5,54 2,06 009
500.A011
Standard request
011 10,72 6,30 2,06 010
500.A012
Standard request
012 12,32 7,90 2,06 011
500.A013
Standard request
013 13,97 9,55 2,06 012
500.A014
Standard request
014 15,57 11,15 2,06 013
500.A015
Standard request
015 17,15 12,73 2,06 014
500.A016
Standard request
016 18,75 14,33 2,06 015
500.A017
Standard request
017 20,32 15,90 2,06 016
500.A018
Standard request
018 21,92 17,50 2,06 017
500.A019
Standard request
019 23,50 19,08 2,06 018
500.A020
Standard request
020 25,17 20,75 2,06 019
500.A021
Standard request
021 26,75 22,33 2,06 020
500.A022
Standard request
022 28,35 23,93 2,06 021
500.A023
Standard request
023 29,92 25,50 2,06 022
500.A024
Standard request
024 31,52 27,10 2,06 023
500.A025
Standard request
025 33,10 28,68 2,06 024
500.A026
Standard request
026 34,70 30,28 2,06 025
500.A027
Standard request
027 36,27 31,85 2,06 026
500.A028
Standard request
028 37,87 33,45 2,06 027
500.A110
Standard request
110 13,97 7,62 3,20 028
500.A111
Standard request
111 15,57 9,22 3,20 110
500.A112
Standard request
112 17,15 10,80 3,20 111
500.A113
Standard request
113 18,75 12,40 3,20 112
500.A114
Standard request
114 20,32 13,97 3,20 113
500.A115
Standard request
115 21,92 15,57 3,20 114
500.A116
Standard request
116 23,50 17,15 3,20 115
500.A117
Standard request
117 25,17 18,82 3,20 116
500.A118
Standard request
118 26,75 20,40 3,20 117
500.A119
Standard request
119 28,35 22,00 3,20 118
500.A120
Standard request
120 29,92 23,57 3,20 119
500.A121
Standard request
121 31,52 25,17 3,20 120
500.A122
Standard request
122 33,10 26,75 3,20 121
500.A123
Standard request
123 34,70 28,35 3,20 122
500.A124
Standard request
124 36,27 29,92 3,20 123
500.A125
Standard request
125 37,87 31,52 3,20 124
500.A126
Standard request
126 39,45 33,10 3,20 125
500.A127
Standard request
127 41,05 34,70 3,20 126
500.A128
Standard request
128 42,62 36,27 3,20 127
500.A129
Standard request
129 44,22 37,87 3,20 128
500.A130
Standard request
130 45,85 39,50 3,20 129
500.A131
Standard request
131 47,42 41,07 3,20 130
500.A132
Standard request
132 49,02 42,67 3,20 131
500.A133
Standard request
133 50,60 44,45 3,20 132
500.A134
Standard request
134 52,20 45,85 3,20 133
500.A135
Standard request
135 53,80 47,45 3,20 134
500.A136
Standard request
136 55,37 49,02 3,20 135
500.A137
Standard request
137 56,97 50,62 3,20 136
500.A138
Standard request
138 58,55 52,20 3,20 137
500.A139
Standard request
139 60,15 53,80 3,20 138
500.A140
Standard request
140 61,72 55,37 3,20 139
500.A141
Standard request
141 63,32 56,97 3,20 140
500.A142
Standard request
142 64,90 58,55 3,20 141
500.A143
Standard request
143 66,50 60,15 3,20 142
500.A144
Standard request
144 68,07 61,72 3,20 143
500.A145
Standard request
145 69,67 63,32 3,20 144
500.A146
Standard request
146 71,25 64,90 3,20 145
500.A147
Standard request
147 72,85 66,50 3,20 146
500.A148
Standard request
148 74,42 68,07 3,20 147
500.A149
Standard request
149 76,02 69,67 3,20 148
500.A210
Standard request
210 25,17 15,67 4,22 149
500.A211
Standard request
211 26,75 17,25 4,22 210
500.A212
Standard request
212 28,35 18,85 4,22 211
500.A213
Standard request
213 29,92 20,42 4,22 212
500.A214
Standard request
214 31,52 22,02 4,22 213
500.A215
Standard request
215 33,10 23,60 4,22 214
500.A216
Standard request
216 34,70 25,20 4,22 215
500.A217
Standard request
217 36,27 26,77 4,22 216
500.A218
Standard request
218 37,87 28,37 4,22 217
500.A219
Standard request
219 39,45 29,95 4,22 218
500.A220
Standard request
220 41,05 31,55 4,22 219
500.A221
Standard request
221 42,62 33,12 4,22 220
500.A222
Standard request
222 44,22 34,72 4,22 221
500.A223
Standard request
223 47,42 37,92 4,22 222
500.A224
Standard request
224 50,60 41,10 4,22 223
500.A225
Standard request
225 53,80 44,30 4,22 224
500.A226
Standard request
226 56,97 47,47 4,22 225
500.A227
Standard request
227 60,15 50,65 4,22 226
500.A228
Standard request
228 63,32 53,82 4,22 227
500.A229
Standard request
229 66,50 53,82 4,22 228
500.A230
Standard request
230 69,67 60,17 4,22 229
500.A231
Standard request
231 72,85 63,35 4,22 230
500.A232
Standard request
232 76,02 66,52 4,22 231
500.A233
Standard request
233 79,20 69,70 4,22 232
500.A234
Standard request
234 82,37 72,87 4,22 233
500.A235
Standard request
235 85,55 76,05 4,22 234
500.A236
Standard request
236 88,72 79,22 4,22 235
500.A237
Standard request
237 91,90 82,40 4,22 236
500.A238
Standard request
238 95,07 85,57 4,22 237
500.A239
Standard request
239 98,25 88,75 4,22 238
500.A240
Standard request
240 101,42 91,92 4,22 239
500.A241
Standard request
241 104,60 95,10 4,22 240
500.A242
Standard request
242 107,77 98,27 4,22 241
500.A243
Standard request
243 110,95 101,45 4,22 242
500.A244
Standard request
244 114,12 104,62 4,22 243
500.A245
Standard request
245 117,30 107,80 4,22 244
500.A246
Standard request
246 120,47 110,97 4,22 245
500.A247
Standard request
247 123,65 114,15 4,22 246
500.A325
Standard request
325 47,42 33,35 6,27 247
500.A326
Standard request
326 50,60 36,53 6,27 325
500.A327
Standard request
327 53,80 39,73 6,27 326
 1 2