BECA 500 - 502 - 504

Hydraulic seals / Piston seals

Description

The BECA 500 - 502 - 504 profiles are double acting composite piston seals composed of a filled PTFE friction ring and pre-tightened rubber O'Ring. They can be assembled in grooves according to standard ISO 7425/1. Option of connecting the seal to 1 or 2 back-up rings.

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	-30°C/+200°C
Pressure	50 MPa
Speed	5 m/s
Medias	Mineral hydraulic oils Fire-resistant liquids Biocompatible fluids Water Others (contact our experts)

Applications

Mobile machinery
Injection presses
Machine tools
Presses
Standard cylinders

Materials

Friction ring

Bronze-filled PTFE
Carbon-filled PTFE
GL Blue PTFE

O'Ring

NBR 70 Shore A
FKM 70 Shore A

Download

Product data - Hydraulic piston seal - BECA 500 - 502 - 504 Product catalog - Hydraulic seals - Piston seals Product catalog - Hydraulic seals

Dimensions

Installation dimensions

Materials

Technical data

Dimensions

500.008, 500.010, 500.012, 500.014, 504.015, 500.015, 502.015, 504.016, 500.016, 502.016, 504.018, 500.018, 502.018, 504.020, 500.020, 502.020, 504.021, 500.021, 502.021, 504.022, 500.022, 502.022, 504.024, 500.024, 502.024, 504.025, 500.025, 502.025, 504.028, 500.028, 502.028, 504.030, 500.030, 502.030, 504.032, 500.032, 502.032, 504.035, 500.035, 502.035, 504.036, 500.036, 502.036, 504.038, 500.038, 502.038, 504.040, 500.040, 502.040, 504.042, 500.042, 502.042, 504.045, 500.045, 502.045, 504.048, 500.048, 502.048, 504.050, 500.050, 502.050, 504.052, 500.052, 502.052, 504.053, 500.053, 502.053, 504.055, 500.055, 502.055, 504.057, 500.057, 502.057, 504.058, 500.058, 502.058, 504.060, 500.060, 502.060, 504.062, 500.062, 502.062, 504.063, 500.063, 502.063, 504.065, 500.065, 502.065, 504.068, 500.068, 502.068, 504.070, 500.070, 502.070, 504.072, 500.072, 502.072, 504.075, 500.075, 502.075, 504.080, 500.080, 502.080, 504.082, 500.082, 502.082, 504.085, 500.085, 502.085, 504.087, 500.087, 502.087, 504.090, 500.090, 502.090, 504.092, 500.092, 502.092, 504.095, 500.095, 502.095, 504.100, 500.100, 502.100, 504.105, 500.105, 502.105, 504.108, 500.108, 502.108, 504.110, 500.110, 502.110, 504.115, 500.115, 502.115, 504.120, 500.120, 502.120, 504.125, 500.125, 502.125, 504.127, 500.127, 502.127, 504.130, 500.130, 502.130, 504.132, 500.132, 502.132, 504.135, 500.135, 502.135, 504.140, 500.140, 502.140, 504.145, 500.145, 502.145, 504.150, 500.150, 502.150, 504.155, 500.155, 502.155, 504.160, 500.160, 502.160, 504.165, 500.165, 502.165, 504.170, 500.170, 502.170, 504.175, 500.175, 502.175, 504.180, 500.180, 502.180, 504.185, 500.185, 502.185, 504.190, 500.190, 502.190, 504.195, 500.195, 502.195, 504.200, 500.200, 502.200, 504.205, 500.205, 502.205, 504.210, 500.210, 502.210, 504.215, 500.215, 502.215, 504.220, 500.220, 502.220, 504.230, 500.230, 502.230, 504.240, 500.240, 502.240, 504.250, 500.250, 502.250, 504.260, 500.260, 502.260, 504.270, 500.270, 502.270, 504.280, 500.280, 502.280, 504.290, 500.290, 502.290, 504.300, 500.300, 502.300, 504.310, 500.310, 502.310, 504.320, 500.320, 502.320, 504.330, 500.330, 502.330, 504.340, 500.340, 502.340, 504.350, 500.350, 502.350, 504.360, 500.360, 502.360, 504.370, 500.370, 502.370, 504.380, 500.380, 502.380, 504.390, 500.390, 502.390, 504.400, 500.400, 502.400, 504.410, 500.410, 502.410, 504.420, 500.420, 502.420, 504.430, 500.430, 502.430, 504.440, 500.440, 502.440, 504.450, 500.450, 502.450, 504.460, 500.460, 502.460, 504.470, 500.470, 502.470, 504.480, 500.480, 502.480, 504.490, 500.490, 502.490, 504.500, 500.500, 502.500, 504.550, 500.550, 502.550, 504.600, 500.600, 502.600, 504.650, 500.650, 502.650, 504.700, 500.700, 502.700, 504.750, 500.750, 502.750, 504.800, 500.800, 502.800, 504.850, 500.850, 502.850, 504.900, 500.900, 502.900, 504.950, 500.950, 502.950

Installation drawing Logement Gorge Joint de piston - Housing Groove Gland Piston seal BECA 500 - 502 - 504

Installation dimensions

Housing Groove Gland Piston seal - BECA 500 - 502 - 504

Installation dimensions

Bore diameter ØD1 H9			Groove diameter	Groove width	Radial section	O'Ring cross-section
BECA 500 Standard series	BECA 502 Light series	BECA 504 Heavy-duty series	Ød1 h9	L1 0/+0.20	S	Ød2
8.0 - 14.9	15.0 - 39.9	---	D1 - 4.90	2.20	2.45	1.78
15.0 - 39.9	40.0 - 79.9	---	D1 - 7.50	3.20	3.75	2.62
40.0 - 79.9	80.0 - 132.9	15.0 - 39.9	D1 - 11.00	4.20	5.50	3.53
80.0 - 132.9	133.0 - 329.9	40.0 - 79.9	D1 - 15.50	6.30	7.75	5.33
133.0 - 329.9	330.0 - 669.9	80.0 - 132.9	D1 - 21.00	8.10	10.50	6.99
330.0 - 669.9	670.0 - 999.9	133.0 - 329.9	D1 - 24.50	8.10	12.25	6.99
670.0 - 999.9	1000.0 - **	330.0 - 669.9	D1 - 28.00	9.50	14.00	8.40
1000.0 - **	---	1000.0 - **	D1 - 38.00	13.80	19.00	12.00

For special applications > 40 MPa, we recommend using an H8/f8 tolerance (bore/piston) or selecting other more suitable materials. Please contact our experts.

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	-45°C/+150°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	-45°C/+150°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	-45°C/+150°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	-45°C/+150°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	-45°C/+150°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	-45°C/+150°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	PE-UHMW	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/+100°C

Other grades of materials are available depending on your specificities.

Technical data

Housing Groove Gland Piston seal - BECA 500 - 502 - 504

Extrusion gaps

Radial section S	Radial extrusion gap F/2
Radial section S	10 MPa	20 MPa	40 MPa
2.45	0.30	0.20	0.15
3.75	0.40	0.25	0.15
5.50	0.40	0.25	0.20
7.75	0.50	0.30	0.20
10.50	0.60	0.35	0.25
12.25	0.60	0.35	0.25
14.00	0.70	0.50	0.30
19.00	1.00	0.70	0.60

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

Radial section S	Radius R1	Radius R2	Chamfer C
2.45	0.30	0.40	3.00
3.75	0.30	0.60	3.00
5.50	0.30	1.00	3.00
7.75	0.30	1.30	5.00
10.50	0.30	1.80	6.00
12.25	0.30	1.80	8.00
14.00	0.30	2.50	10.00
19.00	0.30	3.00	12.00

316 dimensions found

500.215 Standard request	215,00	194,00	8,10
502.215 Standard request	215,00	199,50	6,30
504.220 Standard request	220,00	195,50	8,10
500.220 Standard request	220,00	199,00	8,10
502.220 Standard request	220,00	204,50	6,30
504.230 Standard request	230,00	205,50	8,10
500.230 Standard request	230,00	209,00	8,10
502.230 Standard request	230,00	214,50	6,30
504.240 Standard request	240,00	215,50	8,10
500.240 Standard request	240,00	219,00	8,10
502.240 Standard request	240,00	224,50	6,30
504.250 Standard request	250,00	225,50	8,10
500.250 Standard request	250,00	229,00	8,10
502.250 Standard request	250,00	234,50	6,30
504.260 Standard request	260,00	235,50	8,10
500.260 Standard request	260,00	239,00	8,10
502.260 Standard request	260,00	244,50	6,30
504.270 Standard request	270,00	245,50	8,10
500.270 Standard request	270,00	249,00	8,10
502.270 Standard request	270,00	254,50	6,30
504.280 Standard request	280,00	255,50	8,10
500.280 Standard request	280,00	259,00	8,10
502.280 Standard request	280,00	264,50	6,30
504.290 Standard request	290,00	265,50	8,10
500.290 Standard request	290,00	269,00	8,10
502.290 Standard request	290,00	274,50	6,30
504.300 Standard request	300,00	275,50	8,10
500.300 Standard request	300,00	279,00	8,10
502.300 Standard request	300,00	284,50	6,30
504.310 Standard request	310,00	285,50	8,10
500.310 Standard request	310,00	289,00	8,10
502.310 Standard request	310,00	294,50	6,30
504.320 Standard request	320,00	295,50	8,10
500.320 Standard request	320,00	299,00	8,10
502.320 Standard request	320,00	304,50	6,30
504.330 Standard request	330,00	302,00	9,50
500.330 Standard request	330,00	305,50	8,10
502.330 Standard request	330,00	309,00	8,10
504.340 Standard request	340,00	312,00	9,50
500.340 Standard request	340,00	315,50	8,10
502.340 Standard request	340,00	319,00	8,10
504.350 Standard request	350,00	322,00	9,50
500.350 Standard request	350,00	325,50	8,10
502.350 Standard request	350,00	329,00	8,10
504.360 Standard request	360,00	332,00	9,50
500.360 Standard request	360,00	335,50	8,10
502.360 Standard request	360,00	339,00	8,10
504.370 Standard request	370,00	342,00	9,50
500.370 Standard request	370,00	345,50	8,10
502.370 Standard request	370,00	349,00	8,10
504.380 Standard request	380,00	352,00	9,50
500.380 Standard request	380,00	355,50	8,10
502.380 Standard request	380,00	359,00	8,10
504.390 Standard request	390,00	362,00	9,50
500.390 Standard request	390,00	365,50	8,10
502.390 Standard request	390,00	369,00	8,10
504.400 Standard request	400,00	372,00	9,50
500.400 Standard request	400,00	375,50	8,10
502.400 Standard request	400,00	379,00	8,10
504.410 Standard request	410,00	382,00	9,50
500.410 Standard request	410,00	385,50	8,10
502.410 Standard request	410,00	389,00	8,10
504.420 Standard request	420,00	392,00	9,50
500.420 Standard request	420,00	395,50	8,10
502.420 Standard request	420,00	399,00	8,10
504.430 Standard request	430,00	402,00	9,50
500.430 Standard request	430,00	405,50	8,10
502.430 Standard request	430,00	409,00	8,10
504.440 Standard request	440,00	412,00	9,50
500.440 Standard request	440,00	415,50	8,10
502.440 Standard request	440,00	419,00	8,10
504.450 Standard request	450,00	422,00	9,50
500.450 Standard request	450,00	425,50	8,10
502.450 Standard request	450,00	429,00	8,10
504.460 Standard request	460,00	432,00	9,50
500.460 Standard request	460,00	435,50	8,10
502.460 Standard request	460,00	439,00	8,10
504.470 Standard request	470,00	442,00	9,50
500.470 Standard request	470,00	445,50	8,10
502.470 Standard request	470,00	449,00	8,10
504.480 Standard request	480,00	452,00	9,50
500.480 Standard request	480,00	455,50	8,10
502.480 Standard request	480,00	459,00	8,10
504.490 Standard request	490,00	462,00	9,50
500.490 Standard request	490,00	465,50	8,10
502.490 Standard request	490,00	469,00	8,10
504.500 Standard request	500,00	472,00	9,50
500.500 Standard request	500,00	475,50	8,10
502.500 Standard request	500,00	479,00	8,10
504.550 Standard request	550,00	522,00	9,50
500.550 Standard request	550,00	525,50	8,10
502.550 Standard request	550,00	529,00	8,10
504.600 Standard request	600,00	572,00	9,50
500.600 Standard request	600,00	575,50	8,10
502.600 Standard request	600,00	579,00	8,10
504.650 Standard request	650,00	622,00	9,50
500.650 Standard request	650,00	625,50	8,10
502.650 Standard request	650,00	629,00	8,10
504.700 Standard request	700,00	662,00	13,80
500.700 Standard request	700,00	672,00	9,50