391

391 FRANCEJOINT | Alldatasheet

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Technical content

DESCRIPTION The BECA 391 profile is a snap-on rubber pneumatic shock absorber seal. ADVANTAGES Effective and consistent damping effect with automatic centring APPLICATIONS Shock absorbers Distributor Standard cylinders MATERIALS NBR 90 Shore A FKM 90 Shore A Other grades of materials are available. Please contact our experts. | TECHNICAL DATA Temperature -30°C / +150°C Pressure 1.6 MPa Speed 1 m/s Media Lubricated air Oil-free air Non-aggressive gases The figures above indicate the maximum values and may not be cumulated. They may be developed, depending on the materials used. | 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 C R 0,2 R2≥2 30° Ød1 ØD1 ØD2 Ød2 20/30° ØD3 ROD SEALS BECA 391 QUALITY & EXPERTISE FOR YOUR SEALING NEEDS 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 EN-TETE CONTINU PNEUMATIC SEALS | ROD SEALS | BECA 391