BECA 337 - 339
BECA 337 - 339
Description
The BECA 337 profile is a single acting symmetrical seal composed of a profiled, filled PTFE U-ring type seal and a V-Shaped spring that is resistant to corrosion.
The BECA 339 profile is specially designed for applications where the seal is in contact with food products. It is characterised by a silicone overmoulding on the inside of the seal, which completely hides the V-Shaped spring, thus preventing impurities from accumulating in this hard-to-clean area.
Advantages
Low friction coefficient; no stick-slip effect
Excellent abrasion resistance
Good dimensional stability
Wide temperature range and excellent chemical resistance
Non-toxic material
Technical data
| Temperature | -200°C/+260°C |
|---|---|
| Pressure | 30 MPa |
| Speed | 15 m/s |
| Medias | Practically all types of fluids, and chemical and gas products |
Applications
Food & Beverage
Medical
Pharmaceutical
Static hydraulics
Materials
Profiled seal
Carbon-filled PTFE
GL Blue PTFE
PE-UHMW
V-Shaped spring
Stainless steel
Dimensions
Installation dimensions
Materials
Technical data
Dimensions
Installation drawing
Installation dimensions
Installation dimensions
| Series | Cylinder sealing | Rod sealing | Groove width | Radial section | ||||
|---|---|---|---|---|---|---|---|---|
| Bore diameter ØD1 H9 |
Groove diameter Ød1 h9 |
Rod diameter Ød1 h9 |
Groove diameter ØD1 H9 |
L1 0/+0.20 | S | |||
| Standard series | Extended series | Standard series | Extended series | |||||
| 337.0* | 6.0 - 13.9 | 6.0 - 40.0 | D1 - 2.90 | 3.0 - 9.9 | 3.0 - 40.0 | d1 + 2.90 | 2.40 | 1.45 |
| 337.1 | 14.0 - 24.9 | 10.0 - 200.0 | D1 - 4.50 | 10.0 - 19.9 | 6.0 - 200.0 | d1 + 4.50 | 3.60 | 2.25 |
| 337.2 | 25.0 - 45.9 | 16.0 - 400.0 | D1 - 6.20 | 20.0 - 39.9 | 10.0 - 400.0 | d1 + 6.20 | 4.80 | 3.10 |
| 337.3 | 46.0 - 124.9 | 28.0 - 700.0 | D1 - 9.40 | 40.0 - 119.9 | 20.0 - 700.0 | d1 + 9.40 | 7.10 | 4.70 |
| 337.4 | 125.0 - 999.9 | 45.0 - 999.9 | D1 - 12.20 | 120.0 - 629.9 | 35.0 - 999.9 | d1 + 12.20 | 9.50 | 6.10 |
| 337.5 | 1000.0 - 2500.0 | 100.0 - 2500.0 | D1 - 19.00 | 630.0 - 999.9 | 80.0 - 999.9 | d1 + 19.00 | 15.00 | 9.50 |
For special applications > 30 MPa, we recommend using H8/f8 (bore/piston) and H8/f8 (groove/rod) tolerances or selecting other more suitable materials. Please contact our experts.
*Only BECA 337.0 profiles are fitted with an O'Ring instead of a V-Shaped spring.
Materials
| Profiled seal | V-Shaped spring | Contact surface area | ||||||
|---|---|---|---|---|---|---|---|---|
| Standard code | ISO code | Material | Colour | Characteristics | Code | Type of material | Service temperature | |
| DP | P | Virgin PTFE | White | Resistance to chemical products Sealing water Dielectric Non-stick Low friction coefficient Food & Beverage |
I | X10 Cr Ni 18-8 | -200°C/+260°C | Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
| DC | C | PTFE +25% Carbon |
Grey |
Improvement
Good resistance to chemical products Efficient as part of dynamic |
||||
| CG | C | PTFE + 23% Carbon + 2% Graphite |
Black | |||||
| DV | V | PTFE + 25 % Glass |
Blue | Improvement
corrected with the addition of MOS2 Chemical and dielectric properties preserved Well suited to applications with rotating and simultaneous alternating movements |
Steel Chrome steel Cast iron |
|||
| VM | M | PTFE + 15 % Glass + 5% MoS2 |
Grey | |||||
| DX | X | GL Blue PTFE + Glass + Metal oxides |
Turquoise blue | Compression resistant Wear resistant Excellent chemical stability Good thermal conductivity |
||||
| DG | G | PTFE + 15% Graphite |
Black | Improvement
Self-lubricating Thermal and electrical conductivity Low permeability Good friction coefficient Anti-static Efficient as part of dynamic dynamic applications with self-lubrication |
Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
|||
| K1 | K | PTFE + 10% Ekonol |
Light brown | Improvement
Good friction coefficient and low permeability |
||||
| K2 | K | PTFE + 20% Ekonol |
Light brown | |||||
| DB | B | PTFE + 60% Bronze |
Dark brown | Improvement
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 |
Steel Chrome steel Cast iron |
|||
| B4 | B | PTFE + 40% Bronze |
Dark brown | |||||
| HG | HG | PE-UHMW | White or off-white | Excellent wear resistance on contact with water and air | I | X10 Cr Ni 18-8 | -70°C/+80°C | Steel Stainless steel Chrome steel Aluminium Bronze Cast iron Treated surface |
Other grades of materials are available depending on your specificities.
Technical data
Extrusion gaps
| Radial section S |
Radial extrusion gap F/2 |
|||
|---|---|---|---|---|
| 2 MPa | 10 MPa | 20 MPa | 30 MPa | |
| 1.45 | 0.20 | 0.10 | 0.08 | 0.05 |
| 2.25 | 0.25 | 0.15 | 0.10 | 0.07 |
| 3.10 | 0.35 | 0.20 | 0.15 | 0.08 |
| 4.70 | 0.50 | 0.25 | 0.20 | 0.10 |
| 6.10 | 0.60 | 0.30 | 0.25 | 0.12 |
| 9.50 | 0.90 | 0.50 | 0.40 | 0.20 |
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 |
|---|---|---|---|
| 1.45 | 0.30 | 0.40 | 3.00 |
| 2.25 | 0.30 | 0.40 | 3.00 |
| 3.10 | 0.30 | 0.60 | 3.00 |
| 4.70 | 0.30 | 0.80 | 3.00 |
| 6.10 | 0.30 | 0.80 | 3.50 |
| 9.50 | 0.30 | 0.80 | 6.50 |
147 dimensions found
|
337.4125
|
125,00 | 137,20 | 8,80 | 9,50 | 0,90 |
|
337.1278
|
127,80 | 140,00 | 8,80 | 9,50 | 0,90 |
|
337.4130
|
130,00 | 142,20 | 8,80 | 9,50 | 0,90 |
|
337.4135
|
135,00 | 147,20 | 8,80 | 9,50 | 0,90 |
|
337.1378
|
137,80 | 150,00 | 8,80 | 9,50 | 0,90 |
|
337.4140
|
140,00 | 152,20 | 8,80 | 9,50 | 0,90 |
|
337.1478
|
147,80 | 160,00 | 8,80 | 9,50 | 0,90 |
|
337.4150
|
150,00 | 162,20 | 8,80 | 9,50 | 0,90 |
|
337.1578
|
157,80 | 170,00 | 8,80 | 9,50 | 0,90 |
|
337.4160
|
160,00 | 172,20 | 8,80 | 9,50 | 0,90 |
|
337.4165
|
165,00 | 177,20 | 8,80 | 9,50 | 0,90 |
|
337.1678
|
167,80 | 180,00 | 8,80 | 9,50 | 0,90 |
|
337.4170
|
170,00 | 182,20 | 8,80 | 9,50 | 0,90 |
|
337.1778
|
177,80 | 190,00 | 8,80 | 9,50 | 0,90 |
|
337.4180
|
180,00 | 192,20 | 8,80 | 9,50 | 0,90 |
|
337.1878
|
187,80 | 200,00 | 8,80 | 9,50 | 0,90 |
|
337.4190
|
190,00 | 202,20 | 8,80 | 9,50 | 0,90 |
|
337.1978
|
197,80 | 210,00 | 8,80 | 9,50 | 0,90 |
|
337.4200
|
200,00 | 212,20 | 8,80 | 9,50 | 0,90 |
|
337.2078
|
207,80 | 220,00 | 8,80 | 9,50 | 0,90 |
|
337.4210
|
210,00 | 222,20 | 8,80 | 9,50 | 0,90 |
|
337.2178
|
217,80 | 230,00 | 8,80 | 9,50 | 0,90 |
|
337.4220
|
220,00 | 232,20 | 8,80 | 9,50 | 0,90 |
|
337.2278
|
227,80 | 240,00 | 8,80 | 9,50 | 0,90 |
|
337.4230
|
230,00 | 242,20 | 8,80 | 9,50 | 0,90 |
|
337.2378
|
237,80 | 250,00 | 8,80 | 9,50 | 0,90 |
|
337.4238
|
238,00 | 250,20 | 8,80 | 9,50 | 0,90 |
|
337.4240
|
240,00 | 252,20 | 8,80 | 9,50 | 0,90 |
|
337.4250
|
250,00 | 262,20 | 8,80 | 9,50 | 0,90 |
|
337.2518
|
251,80 | 264,00 | 8,80 | 9,50 | 0,90 |
|
337.2678
|
267,80 | 280,00 | 8,80 | 9,50 | 0,90 |
|
337.4280
|
280,00 | 292,20 | 8,80 | 9,50 | 0,90 |
|
337.2878
|
287,80 | 300,00 | 8,80 | 9,50 | 0,90 |
|
337.4300
|
300,00 | 312,20 | 8,80 | 9,50 | 0,90 |
|
337.3078
|
307,80 | 320,00 | 8,80 | 9,50 | 0,90 |
|
337.4315
|
315,00 | 327,20 | 8,80 | 9,50 | 0,90 |
|
337.4320
|
320,00 | 332,20 | 8,80 | 9,50 | 0,90 |
|
337.3378
|
337,80 | 350,00 | 8,80 | 9,50 | 0,90 |
|
337.3478
|
347,80 | 360,00 | 8,80 | 9,50 | 0,90 |
|
337.4350
|
350,00 | 362,20 | 8,80 | 9,50 | 0,90 |
|
337.4360
|
360,00 | 372,20 | 8,80 | 9,50 | 0,90 |
|
337.3878
|
387,80 | 400,00 | 8,80 | 9,50 | 0,90 |
|
337.4400
|
400,00 | 412,20 | 8,80 | 9,50 | 0,90 |
|
337.4078
|
407,80 | 420,00 | 8,80 | 9,50 | 0,90 |
|
337.4378
|
437,80 | 450,00 | 8,80 | 9,50 | 0,90 |
|
337.4678
|
467,80 | 480,00 | 8,80 | 9,50 | 0,90 |
|
337.4878
|
487,80 | 500,00 | 8,80 | 9,50 | 0,90 |
