BECA 501

Aerospace seals / Piston seals

BECA 501

Description

The BECA 501 profile is a single 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

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Product data - Aerospace piston seal - BECA 501

Series	Bore diameter	Groove diameter	Groove width	O'Ring Series
AS4716 / MIL-G-5514
ØD1	Ød1	L1 min

Dimensions

Materials

Technical data

Dimensions

Installation drawing Logement Gorge Joint de piston aéronautique - Housing Groove Gland aerospace piston seal BECA 501

Materials

Friction ring					O'Ring			Contact surface area
Standard code	ISO code	Material	Colour	Characteristics	Code	Type of material	Service temperature	Contact surface area
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
DV	V	PTFE + 25 % Glass	Blue		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
VM	M	PTFE + 15 % Glass + 5% MoS2	Grey		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
DX	X	GL Blue PTFE + Glass + Metal oxides	Turquoise blue		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
DB	B	PTFE + 60% Bronze	Dark brown		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
B4	B	PTFE + 40% Bronze	Dark brown		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

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	2.06 - 2.19	0.13	1.78
110 - 129	3.20 - 3.33	0.13	2.62
130 - 140		0.15
141 - 149		0.18
210 - 222	4.22 - 4.35	0.13	3.53
223 - 227		0.15
228 - 243		0.18
244 - 247		0.20
325 - 329	6.27 - 6.40	0.15	5.33
330 - 345		0.18
346 - 352		0.20
428 - 445	8.13 - 8.26	0.23	6.99
446		0.25
447 - 460		0.28

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

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