235 FRANCEJOINT | Alldatasheet
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Technical content
QUALITY & EXPERTISE FOR YOUR SEALING NEEDS DESCRIPTION The BECA 235 profile is a U-ring type single acting symmetrical seal with matching rubber lips. It can be used for both rod and piston applications. ADVANTAGES Optimised sealing effect Excellent resistance to high temperatures depending on the type of material chosen Assembly by deformation in closed groove APPLICATIONS Mobile hydraulics Machine tools Presses Standard cylinders MATERIALS NBR 70 Shore A NBR 85 Shore A FKM 85 Shore A Other grades of materials are available. Please contact our experts. | TECHNICAL DATA Temperature -30°C / +200°C Pressure 15 MPa Speed 0.5 m/sec Media Mineral hydraulic oils Fire-resistant liquids Biocompatible fluids Water Others (contact our experts) The figures above indicate the maximum values and may not be cumulated. They may be developed, depending on the materials used. | EXTRUSION GAPS Pressure MPa Radial gap F/2 2.5 MPa 0.45 5.0 MPa 0.35 7.5 MPa 0.30 10 MPa 0.25 15 MPa 0.20 | SURFACE ROUGHNESS Roughness Dynamic surface area Static surface area Groove flanks Ra 0.1 - 0.4 µm ≤1.6 µm ≤3.2 µm Rz 0.63 - 2.5 µm ≤6.3 µm ≤10.0 µm Rmax 1.0 - 4.0 µm ≤10.0 µm ≤16.0 µm | CHAMFERS AND RADIUS Radial section S Radius Radius Chamfer C 3.50 0.20 0.40 2.00 5.00 0.40 0.60 2.50 7.50 0.80 1.00 4.00 10.00 0.80 1.00 5.00 PISTON/ROD SEALS BECA 235 HYDRAULIC SEALS | PISTON/ROD SEALS | BECA 235
F_2 ØD1 SØd1 SØd1 ØD1 20/30° 20/30° C F_2 C | DIMENSIONS Part number Rod diameter Ød1 f8 Groove diameter Ød1 f8 Groove diameter ØD1 H10 Bore diameter ØD1 H8 Seal height Groove width L1 +0.5/+1 Part number Rod diameter Ød1 f8 Groove diameter Ød1 f8 Groove diameter ØD1 H10 Bore diameter ØD1 H8 Seal height Groove width L1 +0.5/+1 The figures highlighted in bold correspond to the rod diameters and bore diameters that are recommended by standard ISO 3320. Other intermediate sizes can be provided. FRANCE JOINT SAS Zone Artisanale Le Mortier - B.P . 50009 - Cugand - 85613 Montaigu Cedex - France Ph. +33 (0)2 51 42 13 76 - Fax +33 (0)2 51 43 61 14 - Email: contact@francejoint.fr - Website: www.francejoint.com HYDRAULIC SEALS | PISTON/ROD SEALS | BECA 235