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BECA 862 - 869

BECA 862 - 869
BECA 862
beca_862_BC_3d_v1
beca_862_3d_v3

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
In dynamic applications : 15 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
Materials
Technical data

Dimensions

Installation drawingLogement Gorge Bague d'étanchéité en PTFE - Housing Groove PTFE shaft seal - BECA 862 - 869

Installation dimensions

PTFE shaft seal - BECA 862 - 869

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

  • 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
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
  • 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
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
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

Housing Groove PTFE shaft seal - BECA 862 - 869

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