Product description Standard types with open outer metal sleeve. With or without dust lip (SL) to protect against exterior soiling Product properties ■ Outer casing: metal, machined ■ Sealing lip profile, sealing lip machined on the front face ■ Sealing lip profile, finished sealing lip (Bl FUD/B1 FUDSL) ■ Axles for agricultural and construction machinery ■ Power take-off gears in agricultural and construction machinery transmissions and axles Product advantages ■ Broad range of applications in every sector of industry ■ Metal housing for especially firm and precise seating in the 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 from outside (Bl FUDSL). (Note: can lead to temperature increase from frictional heat) Freudenberg Simrit GmbH & Co. KG | Simmerrings and Rotary Seals eCatalog 2009

Simmerrings | Simmerring B1.../SL to DIN 3761 B/BS 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 (B1FUD/B1FUDSL) 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...