Ajs/Matchless. Seal Ring Front Hub. Ring, sealing hub bearing, front Replaces 017279 felt used in early modelsAlso used for Oil sealing ring for rear hub bearings, 1941-50 rigid models original Pt No. 41-G3L-H50ID 13/16" ca. 20,6 mmAD ca. 31 mmBreite 5 mm