Product description Standard types with reinforced outer metal sleeve for easy fitting. With or without dust lip (SL) to protect against exterior Product properties ■ Outer casing: metal, machined ■ Sealing lip profile, sealing lip machined on the front face ■ Sealing lip profile, finished sealing lip (B2FUD/B2FUDSL). ■ Heavy industry (cranes, calendar roll gearboxes) Product advantages ■ Broad range of applications in every sector of industry ■ For larger dimensions and with rough fitting in the locating bore (Note: limited static sealing on the outer casing for low viscosity and gaseous media) ■ Additional dust lip as additional seal against moderate to medium dust and dirt ingress (B2...SL) (Note: can lead to temperature increase from frictional heat) © Freudenberg Simrit GmbH & Co. KG | Simmerrings and Rotary Seals eCatalog 2009

Simmerrings | Simmerring B2.../SL to DIN 3761 C/CS Operating conditions Media Mineral oils, synthetic oils*, greases T –40 … +100; short term up to …+120 °C Circumferential speed [m/s] Speed [revs/min] 30 000 40 15 000 10 000 9000 8000 7000 6000 5000 4500 4000 FKM 3500 3000 30 2500 v 2000 20 1500 NBR 10 1000 5 500 0 0 25 50 100 150 200 ...500 Shaft diameter [mm] p ≤0,05 MPa; ≤0,02 MPa (B2FUD/B2FUDSL) Permissible circumferential speed for Simmerrings made from the materials NBR (72 NBR 902) and FKM (75 FKM 585) for the sealing of motor oil SAE 20. Use Simmerring with SL (dust lip): v = max. 8...