BECA 862 - 869
Description
The BECA 862 profile is a filled or virgin PTFE machined shaft seal and is composed of a primary sealing lip pre-stressed by a stainless steel V-Shaped spring for dynamic sealing, an anti -pollution sealing lip and an O'Ring for static sealing.
The BECA 869 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 on start up
Excellent abrasion and extrusion resistance
Suitable for a wide temperature range
Excellent chemical inertia
Technical data
| Temperature | -30°C/+200°C |
|---|---|
| Pressure | In static applications : 25 MPa |
| Speed | 2 m/s |
| Medias | Practically all types of fluids, and chemical and gas products |
Applications
Food & Beverage
Medical
Pharmaceutical
General industry
Materials
Profiled seal
Virgin PTFE
Carbon-filled PTFE
V-Shaped spring
Stainless steel
O'Ring
NBR 70 Shore A
Dimensions
Installation dimensions
Installation dimensions
| Series | Shaft diameter Ød1 f8/h9 |
Bore diameter ØD1 H9 |
Groove width L1 |
Radial section S |
|---|---|---|---|---|
| BECA 862.1 | ≤ 10.00 | ≤ 18.00 | ≥ 4.00 | ≥ 4.00 |
| BECA 862.2 | ≤ 18.00 | ≤ 28.00 | ≥ 6.00 | ≥ 5.00 |
| BECA 862.3 | ≤ 25.00 | ≤ 40.00 | ≥ 9.00 | ≥ 7.50 |
| BECA 862.4 | ≤ 45.00 | ≤ 67.00 | ≥ 11.00 | ≥ 11.00 |
Materials
| Friction ring | V-Shaped spring | O'Ring | Contact surface area | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Standard code | ISO code | Material | Colour | Characteristics | Code | Type of material | 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 | 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
Good resistance to chemical products Efficient as part of dynamic |
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
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 |
||
| 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 | ||||
| G6 | FKM 70 Shore A | -20°C/+200°C | ||||||||
| 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 |
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 | ||||||||
| 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 |
K6 | NBR 70 Shore A | -30°C/+100°C | Steel Chrome steel Cast iron |
||
| 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 | ||||
| G6 | FKM 70 Shore A | -20°C/+200°C | ||||||||
Other grades of materials are available depending on your specificities.
Technical data
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 |
Chamfer C |
|---|---|---|
| ≥ 4.00 | 0.20 | 3.00 |
| ≥ 5.00 | 0.20 | 3.00 |
| ≥ 7.50 | 0.30 | 4.00 |
| ≥ 11.00 | 0.30 | 5.00 |
Only on request