TM 10-4320-342-24 APPENDIX F MANDATORY REPLACEMENT PARTS F-1.  INTRODUCTION. This appendix lists all mandatory replacements specified in the maintenance procedures described in Chapters 2, 3, and 4. MANDATORY REPLACEMENT PARTS ITEM NO. NOMENCLATURE PART NUMBER 1 Retainer, Split Ring 13229E3889 2 Washer, Sealing 13229E3888 3 Packing MS28778-6 4 Gasket, Coupling Half 13228E1768-8 5 Preformed packing MS28778-6 6 Preformed Packing M83248/1-904 7 Element, Filter 6927-40W 8 Preformed Packing M25988/2-904 9 Bearing, Ball (2 ea.) 07-111140 10 Gasket, coupling 13228E1768-10 11 Preformed Packing M25988/1-905 12 Sleeving Insulation M23053/1-201-0 13 Preformed Packing M25980/1-203 14 Preformed Packing F ELEMENT 15 Preformed Packing F HOUSING 16 Preformed Packing M25988/1-906 17 Filter 3609044-1 18 Preformed Packing M83248/1-128 19 Preformed Packing 600-3130-5-8 20 Preformed Packing M83248/1-036 21 Preformed Packing M83248/2-906 22 Preformed Packing S9412-672 23 Preformed Packing M25988/2-903 F-1