Seal Bearing Rear NSN 2840-00-939-3472

Tf30 eng

Graphite carbon; ring shaped with vertical joint 0.008 min, 0.014 max in. W at 3.783 nom in. Od for seal; 0.129 min, 0.131 max in. W wall; 0.168 min, 0.176 max in. Wall thk; 7 holes through wall width eq spaced on basis of 8, 0.026 min, 0.030 max dia, recess 0.030 min, 0.035 max in. Diameter to 0.036 min, 0.040 max in. Depth 1st side, recess 0.060 min, 0.065 max in. Diameter to 0.020 min, 0.024 max in. Depth 2nd side; 16 grooves eq spaced on first side, 0.040 max in. Deep into wall width, 0.116 max in. Deep into wall thk, rounded with 0.100 max in. Radius

2840 Prime Moving; And Components Aircraft Gas Turbines And Jet Engines

009393472

2840009393472