BECA 151

Aerospace seals / Rod seals

BECA 151

Description

The BECA 151 profile is a double acting composite rod seal composed of a filled PTFE friction ring and a pre-tightened rubber O'Ring. It follows the rod 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 rod seal - BECA 151

Series	Rod 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 tige aéronautique - Housing Groove Gland aerospace rod seal BECA 151

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	Groove 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 - 149	3.20 - 3.33	0.13	2.62
210 - 247	4.22 - 4.35	0.15	3.53
325 - 349	6.27 - 6.40	0.18	5.33
425 - 460	8.13 - 8.26	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

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

151.A328 Standard request	328	47,57	61,65	6,27	329
151.A329 Standard request	329	50,75	64,82	6,27	330
151.A330 Standard request	330	53,92	68,00	6,27	331
151.A331 Standard request	331	57,10	71,17	6,27	332
151.A332 Standard request	332	60,27	74,35	6,27	333
151.A333 Standard request	333	63,45	77,52	6,27	334
151.A334 Standard request	334	66,62	80,70	6,27	335
151.A335 Standard request	335	69,80	83,87	6,27	336
151.A336 Standard request	336	72,97	87,05	6,27	337
151.A337 Standard request	337	76,12	90,20	6,27	338
151.A338 Standard request	338	79,30	93,37	6,27	339
151.A339 Standard request	339	82,47	96,55	6,27	340
151.A340 Standard request	340	85,65	99,72	6,27	341
151.A341 Standard request	341	88,82	102,90	6,27	342
151.A342 Standard request	342	92,00	106,07	6,27	343
151.A343 Standard request	343	95,17	109,25	6,27	344
151.A344 Standard request	344	98,35	112,42	6,27	345
151.A345 Standard request	345	101,52	115,60	6,27	346
151.A346 Standard request	346	104,70	118,77	6,27	347
151.A347 Standard request	347	107,87	121,95	6,27	348
151.A348 Standard request	348	111,05	125,12	6,27	349
151.A349 Standard request	349	114,22	128,30	6,27	350
151.A425 Standard request	425	114,22	133,27	8,13	427
151.A426 Standard request	426	117,40	136,45	8,13	428
151.A427 Standard request	427	120,57	139,00	8,13	429
151.A428 Standard request	428	123,75	142,80	8,13	430
151.A429 Standard request	429	126,92	145,97	8,13	431
151.A430 Standard request	430	130,10	149,15	8,13	432
151.A431 Standard request	431	133,27	152,32	8,13	433
151.A432 Standard request	432	135,45	155,50	8,13	434
151.A433 Standard request	433	139,62	158,67	8,13	435
151.A434 Standard request	434	142,80	161,85	8,13	436
151.A435 Standard request	435	145,97	165,02	8,13	437
151.A436 Standard request	436	149,15	168,20	8,13	437
151.A437 Standard request	437	152,32	171,37	8,13	438
151.A438 Standard request	438	158,67	177,72	8,13	439
151.A439 Standard request	439	165,02	184,07	8,13	440
151.A440 Standard request	440	171,37	190,42	8,13	441
151.A441 Standard request	441	177,72	196,77	8,13	442
151.A442 Standard request	442	184,07	203,12	8,13	443
151.A443 Standard request	443	190,42	209,47	8,13	444
151.A444 Standard request	444	196,77	215,82	8,13	445
151.A445 Standard request	445	203,12	222,17	8,13	445
151.A446 Standard request	445	215,82	234,87	8,13	446
151.A447 Standard request	446	228,52	247,57	8,13	447
151.A448 Standard request	447	241,22	260,27	8,13	448
151.A449 Standard request	448	253,92	272,97	8,13	449
151.A450 Standard request	449	266,62	285,67	8,13	450
151.A451 Standard request	450	279,32	298,37	8,13	451
151.A452 Standard request	451	292,02	311,07	8,13	452
151.A453 Standard request	452	304,72	323,77	8,13	453
151.A454 Standard request	453	317,42	336,47	8,13	454
151.A455 Standard request	454	330,12	349,17	8,13	455
151.A456 Standard request	455	342,82	361,87	8,13	456
151.A457 Standard request	456	355,52	374,57	8,13	457
151.A458 Standard request	457	368,22	387,27	8,13	458
151.A459 Standard request	458	380,92	399,97	8,13	459
151.A460 Standard request	459	393,62	412,67	8,13	460