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BECA 042

BECA 042
BECA 042
BECA 042 3D V1
BECA 042 3D V2

Description

The BECA 042 profile is a polyurethane static seal for piston sealing.

Advantages

High reliability
Interchangeable for o-ring and o-ring with back-up ring
Easy and secure installation
No need for additional back-up ring
High wear resistant

Technical data

Temperature

-30°C / +110°C depending on the material selected

Pressure

50 MPa

Speed

0.5 m/s

Medias

Mineral hydraulic oils

Applications

Mobile machinery
Injection presses
Presses
Standard cylinders

Materials

PU 93 Shore A - Blue
PU 96 Shore A - Blue
High temp. PU 96 Shore A - Beige

Dimensions
Materials
Technical data

Dimensions

Installation drawingLogement Gorge joint statique joint de piston - Housing Groove static seal piston seal - BECA 014

Materials

PU

Polyurethane is a material that has the elastic properties of rubber. The proportion in its composition (diisocyanate, polyol, chain extender) is determined by its properties. This material is characterised by a strong mechanical resistance, good wear resistance, high elastic modulus, good flexibility and a very good ozone and oxidation resistance.

Chemical resistance Pure aliphatic hydrocarbons (propane, butane)
Mineral oils and greases
Silicone oils and greases
Water up to +50°C
Compatibility issue Ketones, esters, ethers, alcohols and glycols
Hot water, steam, alkalis, amines and acids
Temperature range -30°C/+90°C
-30°C / +110°C with our PUHT (short term peak at 150°C)

Technical data

Logement Gorge joint statique joint de piston - Housing Groove static seal piston seal - BECA 042

Surface roughness

In static radial applications Ra µm Rt µm Rz µm
Contact surface area ≤ 1.6 µm ≤ 10.0 µm ≤ 6.3 µm
Groove diameter surface ≤ 3.2 µm ≤ 16.0 µm ≤ 6.3 µm
Groove flanks ≤ 3.2 µm ≤ 16.0 µm ≤ 6.3 µm

Chamfers and radius

Radial section
S
Chamfer
C
Radius
R1
Radius
R2
S ≤ 2,30 2,50 0,40 0,20
2,30 < S ≤ 3,00 3,00 0,40 0,20
3,00 < S ≤ 4,00 3,50 0,40 0,20
4,00 < S ≤ 4,50 4,00 0,40 0,20
4,50 < S ≤ 5,00 4,50 0,40 0,20
5,00 < S ≤ 6,00 5,00 0,40 0,20
6,00 < S ≤ 8,00 6,00 0,40 0,20

Only on request