supply of square type front and back cover gasket [square type front and back cover gasket for reverser and ctf servomotor as per clw drg 3twd.102.034 alt 3 or latest. material: compressed asbestos fiber high pressure jointing sheet to is 2712-19719/1979/1998 (metallic reinforced). , square type front and back cover gasket for reverser and ctf servomotor as per clw drg 3twd.102.034 a lt 3 or latest. material: compressed asbestos fiber high pressure jointing sheet to is 2712-19719/1979/1998 (metallic r einforced). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]