Standard_Parts_Catalogue

Page 1558 | 3.5 Controlling, Venting, Sealing of Liquids and Gases 2 3 d 1 Viewing window d 2 H11 Bore Ø d 3 b min. l 1 l 2  9 17 18 5  7 3 12 20 21 6  7 3 17 26 28 6  7 3 20 30 32 7  8 4 25 35 38 8  9 4 28 40 43 9 10 4 32 45 47 9 11 5 This oil sight glass GN 542 do not require a thread. The window glass is recessed, giving better protection to the window. Assembly instruction: Press in the oil sight glass manually, then possibly use an intermediate layer such as wood or a hammer. Chamfer hole 1x45° and grease slightly the outside surface of the O-ring to make assembly easier. see also... • Oil Sight Glasses GN 537 (without Thread) → Page 1560 Information GN 542 Oil Sight Glasses Crystal Clear Plastic, without Thread 1 Material 2 d 1 3 d 2 4 Type How to order 1 2 3 4 GN542-NO-17-26-A 4 Type A With reflector B Without reflector • Body Plastic NO Crystal clear Polycarbonat (PC) - - High mechanical strength - - Temperature resistant up to 100 °C - - Not solvent resistant - - Not alcohol resistant • O-ring Rubber NBR (Perbunan ® ) • Reflector Aluminum - - White lacquered - - With red mark for oil level • ISO Fundamental Tolerances → Page 2151 • Elastomer Characteristics → Page 2158 • Plastic Characteristics → Page 2158 • RoHS Specification 1 Original design HE.