BECA 500 - 502 - 504

Pneumatic 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.

Advantages

Optimal sealing in static and dynamic applications
Low friction coefficient; no stick-slip effect
Excellent abrasion 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	1.6 MPa (5.0 MPa max)
Speed	5 m/s
Medias	Lubricated air Oil-free air Non-aggressive gases

Applications

Shock absorbers
Distributor
Standard cylinders

Materials

Friction ring

Bronze-filled PTFE
Carbon-filled PTFE
PE-UHMW

O'Ring

NBR 70 Shore A
HNBR 70 Shore A
FKM 70 Shore A

Download

Product data - Pneumatic piston seal - BECA 500 - 502 - 504

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

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/+110°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	0.0 to 5.0 MPa
2.45	0.20
3.75	0.25
5.50	0.40
7.75	0.50
10.50	0.70
12.25	0.90
14.00	0.90
19.00	1.00

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

500.008 Standard request	8,00	3,10	2,20
500.010 Standard request	10,00	5,10	2,20
500.012 Standard request	12,00	7,10	2,20
500.014 Standard request	14,00	9,10	2,20
504.015 Standard request	15,00	4,00	4,20
500.015 Standard request	15,00	7,50	3,20
502.015 Standard request	15,00	10,10	2,20
504.016 Standard request	16,00	5,00	4,20
500.016 Standard request	16,00	8,50	3,20
502.016 Standard request	16,00	11,10	2,20
504.018 Standard request	18,00	7,00	4,20
500.018 Standard request	18,00	10,50	3,20
502.018 Standard request	18,00	13,10	2,20
504.020 Standard request	20,00	9,00	4,20
500.020 Standard request	20,00	12,50	3,20
502.020 Standard request	20,00	15,10	2,20
504.021 Standard request	21,00	10,00	4,20
500.021 Standard request	21,00	13,50	3,20
502.021 Standard request	21,00	16,10	2,20
504.022 Standard request	22,00	11,00	4,20
500.022 Standard request	22,00	14,50	3,20
502.022 Standard request	22,00	17,10	2,20
504.024 Standard request	24,00	13,00	4,20
500.024 Standard request	24,00	16,50	3,20
502.024 Standard request	24,00	19,10	2,20
504.025 Standard request	25,00	14,00	4,20
500.025 Standard request	25,00	17,50	3,20
502.025 Standard request	25,00	20,10	2,20
504.028 Standard request	28,00	17,00	4,20
500.028 Standard request	28,00	20,50	3,20
502.028 Standard request	28,00	23,10	2,20
504.030 Standard request	30,00	19,00	4,20
500.030 Standard request	30,00	22,50	3,20
502.030 Standard request	30,00	25,10	2,20
504.032 Standard request	32,00	21,00	4,20
500.032 Standard request	32,00	24,50	3,20
502.032 Standard request	32,00	27,10	2,20
504.035 Standard request	35,00	24,00	4,20
500.035 Standard request	35,00	27,50	3,20
502.035 Standard request	35,00	30,10	2,20
504.036 Standard request	36,00	25,00	4,20
500.036 Standard request	36,00	28,50	3,20
502.036 Standard request	36,00	31,10	2,20
504.038 Standard request	38,00	27,00	4,20
500.038 Standard request	38,00	30,50	3,20
502.038 Standard request	38,00	33,10	2,20
504.040 Standard request	40,00	24,50	6,30
500.040 Standard request	40,00	29,00	4,20
502.040 Standard request	40,00	32,50	3,20
504.042 Standard request	42,00	26,50	6,30
500.042 Standard request	42,00	31,00	4,20
502.042 Standard request	42,00	34,50	3,20
504.045 Standard request	45,00	29,50	6,30
500.045 Standard request	45,00	34,00	4,20
502.045 Standard request	45,00	37,50	3,20
504.048 Standard request	48,00	32,50	6,30
500.048 Standard request	48,00	37,00	4,20
502.048 Standard request	48,00	40,50	3,20
504.050 Standard request	50,00	34,50	6,30
500.050 Standard request	50,00	39,00	4,20
502.050 Standard request	50,00	42,50	3,20
504.052 Standard request	52,00	36,50	6,30
500.052 Standard request	52,00	41,00	4,20
502.052 Standard request	52,00	44,50	3,20
504.053 Standard request	53,00	37,50	6,30
500.053 Standard request	53,00	42,00	4,20
502.053 Standard request	53,00	45,50	3,20
504.055 Standard request	55,00	39,50	6,30
500.055 Standard request	55,00	44,00	4,20
502.055 Standard request	55,00	47,50	3,20
504.057 Standard request	57,00	41,50	6,30
500.057 Standard request	57,00	46,00	4,20
502.057 Standard request	57,00	49,50	3,20
504.058 Standard request	58,00	42,50	6,30
500.058 Standard request	58,00	47,00	4,20
502.058 Standard request	58,00	50,50	3,20
504.060 Standard request	60,00	44,50	6,30
500.060 Standard request	60,00	49,00	4,20
502.060 Standard request	60,00	52,50	3,20
504.062 Standard request	62,00	46,50	6,30
500.062 Standard request	62,00	51,00	4,20
502.062 Standard request	62,00	54,50	3,20
504.063 Standard request	63,00	47,50	6,30
500.063 Standard request	63,00	52,00	4,20
502.063 Standard request	63,00	55,50	3,20
504.065 Standard request	65,00	49,50	6,30
500.065 Standard request	65,00	54,00	4,20
502.065 Standard request	65,00	57,50	3,20
504.068 Standard request	68,00	52,50	6,30
500.068 Standard request	68,00	57,00	4,20
502.068 Standard request	68,00	60,50	3,20
504.070 Standard request	70,00	54,50	6,30
500.070 Standard request	70,00	59,00	4,20
502.070 Standard request	70,00	62,50	3,20
504.072 Standard request	72,00	56,50	6,30
500.072 Standard request	72,00	61,00	4,20
502.072 Standard request	72,00	64,50	3,20
504.075 Standard request	75,00	59,50	6,30
500.075 Standard request	75,00	64,00	4,20
502.075 Standard request	75,00	67,50	3,20