BECA 156M

Aerospace seals / Rod seals

BECA 156M

Description

The BECA 156M profile is a single acting composite rod seal composed of a filled PTFE friction ring and a pre-tightened rubber O'Ring. It meets the standards MIL-G-5514F and AS4716.

Advantages

Low friction coefficient
Suitable for a reduced size
Wide temperature range and excellent chemical resistance, depending on the materials selected
Housing in line with MIL-G-5514F and AS4716

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 rod seal - BECA 156M

Series	Rod diameter	Groove diameter	Groove width	O'Ring Series
AS4716 / MIL-G-5514	AS4716	MIL-G-5514
Ød1	ØD1	ØD1	L1 min	L2 min	L3 min

Dimensions

Materials

Technical data

Dimensions

Installation drawing Logement Gorge Joint de tige aéronautique - Housing Groove Gland aerospace rod seal BECA 156M

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

Other grades of materials are available depending on your specificities.

Technical data

Housing Groove Aerospace Rod Seal - BECA 156M

Groove widths and extrusion gaps

Series	Groove width			Extrusion gaps F	O'Ring Ød2
Series	L1 min - max	L2 min - max	L3 min - max	Extrusion gaps F	O'Ring Ød2
110 - 125	3.58 - 3.83	4.65 - 4.90	6.22 - 6.47	0.13	2.62
126 - 131				0.15
132 - 149				0.18
210 - 222	4.78 - 5.03	5.97 - 6.22	7.72 - 7.97	0.13	3.53
223 - 225				0.15
226 - 245				0.18
246 - 247				0.20
325 - 327	7.14 - 7.39	8.48 - 8.73	10.77 - 11.02	0.15	5.33
328 - 349	7.14 - 7.39	8.48 - 8.73	10.77 - 11.02	0.18	5.33
425 - 449	9.53 - 9.78	12.07 - 12.32	14.71 - 14.96	0.23	6.99
450 - 460	9.53 - 9.78	12.07 - 12.32	14.71 - 14.96	0.25	6.99

Tolerances on the rod diameters and groove diameters

Series	Tolerance on rod diameter Ød1	Tolerance on groove diameter ØD1
010 - 012	-0.025/0	0/+0.025
013 - 349	-0.050/0	0/+0.050
425 - 446	-0.076/0	0/+0.076
447 - 460	-0.076/0	0/+0.100

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

Series	Radius		Chamfer
Series	R1 min - max	R2 min - max	C
110 - 149	0.13 - 0.26	0.13 - 0.38	2.50
210 - 222	0.13 - 0.26	0.13 - 0.38	3.00
223 - 247	0.13 - 0.26	0.25 - 0.64	3.50
325 - 349	0.13 - 0.26	0.51 - 0.89	4.00
425 - 460	0.13 - 0.26	0.51 - 0.89	4.50

139 dimensions found

156.110 Standard request	110	9,47	13,87	14,00	3,58	4,65	6,22	013
156.111 Standard request	111	11,05	15,47	15,57	3,58	4,65	6,22	014
156.112 Standard request	112	12,65	17,07	17,17	3,58	4,65	6,22	015
156.113 Standard request	113	14,22	18,64	18,75	3,58	4,65	6,22	016
156.114 Standard request	114	15,82	20,24	20,35	3,58	4,65	6,22	017
156.115 Standard request	115	17,40	21,82	21,92	3,58	4,65	6,22	018
156.116 Standard request	116	19,00	23,44	23,52	3,58	4,65	6,22	019
156.117 Standard request	117	20,57	25,02	25,10	3,58	4,65	6,22	020
156.118 Standard request	118	22,17	26,62	26,70	3,58	4,65	6,22	021
156.119 Standard request	119	23,75	28,19	28,27	3,58	4,65	6,22	022
156.120 Standard request	120	25,35	29,79	29,87	3,58	4,65	6,22	023
156.121 Standard request	121	26,92	31,37	31,45	3,58	4,65	6,22	024
156.122 Standard request	122	28,52	32,97	33,05	3,58	4,65	6,22	025
156.123 Standard request	123	30,10	34,54	34,62	3,58	4,65	6,22	026
156.124 Standard request	124	31,70	36,14	36,22	3,58	4,65	6,22	027
156.125 Standard request	125	33,27	37,72	37,80	3,58	4,65	6,22	028
156.126 Standard request	126	34,87	39,32	39,40	3,58	4,65	6,22	028
156.127 Standard request	127	36,45	40,89	40,97	3,58	4,65	6,22	029
156.128 Standard request	128	38,05	42,49	42,57	3,58	4,65	6,22	029
156.129 Standard request	129	39,62	44,07	44,15	3,58	4,65	6,22
156.130 Standard request	130	41,22	45,67	45,75	3,58	4,65	6,22	030
156.131 Standard request	131	42,80	47,24	47,32	3,58	4,65	6,22	031
156.132 Standard request	132	44,40	48,84	48,92	3,58	4,65	6,22	031
156.133 Standard request	133	45,97	50,39	50,50	3,58	4,65	6,22	032
156.134 Standard request	134	47,57	51,99	52,10	3,58	4,65	6,22	032
156.135 Standard request	135	49,17	53,59	53,70	3,58	4,65	6,22	033
156.136 Standard request	136	50,75	55,17	55,27	3,58	4,65	6,22	033
156.137 Standard request	137	52,35	56,77	56,87	3,58	4,65	6,22	034
156.138 Standard request	138	53,92	58,34	58,45	3,58	4,65	6,22	034
156.139 Standard request	139	55,52	59,94	60,05	3,58	4,65	6,22	035
156.140 Standard request	140	57,10	61,52	61,62	3,58	4,65	6,22	035
156.141 Standard request	141	58,70	63,12	63,22	3,58	4,65	6,22	036
156.142 Standard request	142	60,27	64,69	64,80	3,58	4,65	6,22	036
156.143 Standard request	143	61,87	66,29	66,40	3,58	4,65	6,22	037
156.144 Standard request	144	63,45	67,87	67,97	3,58	4,65	6,22	037
156.145 Standard request	145	65,05	69,47	69,57	3,58	4,65	6,22	038
156.146 Standard request	146	66,62	71,04	71,15	3,58	4,65	6,22	038
156.147 Standard request	147	68,22	72,64	72,75	3,58	4,65	6,22	039
156.148 Standard request	148	69,80	74,22	74,32	3,58	4,65	6,22	039
156.149 Standard request	149	71,40	75,82	75,92	3,58	4,65	6,22	040
156.210 Standard request	210	19,00	25,12	25,17	4,78	5,97	7,72	117
156.211 Standard request	211	20,57	26,7	26,75	4,78	5,97	7,72	118
156.212 Standard request	212	22,17	28,32	28,35	4,78	5,97	7,72	119
156.213 Standard request	213	23,75	29,9	29,92	4,78	5,97	7,72	120
156.214 Standard request	214	25,35	31,5	31,52	4,78	5,97	7,72	121
156.215 Standard request	215	26,92	33,07	33,10	4,78	5,97	7,72	122
156.216 Standard request	216	28,52	34,67	34,70	4,78	5,97	7,72	123
156.217 Standard request	217	30,10	36,25	36,27	4,78	5,97	7,72	124
156.218 Standard request	218	31,70	37,85	37,87	4,78	5,97	7,72	125
156.219 Standard request	219	33,27	39,42	39,45	4,78	5,97	7,72	126
156.220 Standard request	220	34,87	41,02	41,05	4,78	5,97	7,72	127
156.221 Standard request	221	36,45	42,6	42,62	4,78	5,97	7,72	128
156.222 Standard request	222	38,05	44,2	44,22	4,78	5,97	7,72	129
156.223 Standard request	223	41,22	47,37	47,40	4,78	5,97	7,72	131
156.224 Standard request	224	44,40	50,55	50,57	4,78	5,97	7,72	133
156.225 Standard request	225	47,57	53,72	53,75	4,78	5,97	7,72	135
156.226 Standard request	226	50,75	56,9	56,92	4,78	5,97	7,72	137
156.227 Standard request	227	53,92	60,07	60,10	4,78	5,97	7,72	139
156.228 Standard request	228	57,10	63,25	63,27	4,78	5,97	7,72	141
156.229 Standard request	229	60,27	66,42	66,45	4,78	5,97	7,72	143
156.230 Standard request	230	63,45	69,6	69,62	4,78	5,97	7,72	145
156.231 Standard request	231	66,62	72,77	72,80	4,78	5,97	7,72	147
156.232 Standard request	232	69,80	75,95	75,97	4,78	5,97	7,72	149
156.233 Standard request	233	72,97	79,12	79,15	4,78	5,97	7,72	150
156.234 Standard request	234	76,12	82,27	82,30	4,78	5,97	7,72	151
156.235 Standard request	235	79,30	85,45	85,47	4,78	5,97	7,72	151
156.236 Standard request	236	82,47	88,62	88,65	4,78	5,97	7,72	152
156.237 Standard request	237	85,65	91,8	91,82	4,78	5,97	7,72	152
156.238 Standard request	238	88,82	94,97	95,00	4,78	5,97	7,72	153
156.239 Standard request	239	92,00	98,15	98,17	4,78	5,97	7,72	153
156.240 Standard request	240	95,17	101,32	101,35	4,78	5,97	7,72	154
156.241 Standard request	241	98,35	104,5	104,52	4,78	5,97	7,72	154
156.242 Standard request	242	101,52	107,67	107,70	4,78	5,97	7,72	155
156.243 Standard request	243	104,70	110,85	110,87	4,78	5,97	7,72	155
156.244 Standard request	244	107,87	114,02	114,05	4,78	5,97	7,72	156
156.245 Standard request	245	111,05	117,2	117,22	4,78	5,97	7,72	156
156.246 Standard request	246	114,22	120,37	120,40	4,78	5,97	7,72	157
156.247 Standard request	247	117,40	123,55	123,57	4,78	5,97	7,72	157
156.325 Standard request	325	38,05	47,5	47,50	7,14	8,48	10,77	223
156.326 Standard request	326	41,22	50,67	50,67	7,14	8,48	10,77	224
156.327 Standard request	327	44,40	53,85	53,85	7,14	8,48	10,77	225
156.328 Standard request	328	47,57	57,02	57,02	7,14	8,48	10,77	226
156.329 Standard request	329	50,75	60,2	60,20	7,14	8,48	10,77	227
156.330 Standard request	330	53,92	63,37	63,37	7,14	8,48	10,77	228
156.331 Standard request	331	57,10	66,55	66,55	7,14	8,48	10,77	229
156.332 Standard request	332	60,27	69,72	69,72	7,14	8,48	10,77	230
156.333 Standard request	333	63,45	72,9	72,90	7,14	8,48	10,77	231
156.334 Standard request	334	66,62	76,07	76,07	7,14	8,48	10,77	232
156.335 Standard request	335	69,80	79,25	79,25	7,14	8,48	10,77	233
156.336 Standard request	336	72,97	82,42	82,42	7,14	8,48	10,77	234
156.337 Standard request	337	76,12	85,57	85,57	7,14	8,48	10,77	235
156.338 Standard request	338	79,30	88,75	88,75	7,14	8,48	10,77	236
156.339 Standard request	339	82,47	91,92	91,92	7,14	8,48	10,77	237
156.340 Standard request	340	85,65	95,1	95,10	7,14	8,48	10,77	238
156.341 Standard request	341	88,82	98,27	98,27	7,14	8,48	10,77	239
156.342 Standard request	342	92,00	101,45	101,45	7,14	8,48	10,77	240
156.343 Standard request	343	95,17	104,62	104,62	7,14	8,48	10,77	241
156.344 Standard request	344	98,35	107,8	107,80	7,14	8,48	10,77	242
156.345 Standard request	345	101,52	110,97	110,97	7,14	8,48	10,77	243
156.346 Standard request	346	104,70	114,15	114,15	7,14	8,48	10,77	244