mechanical seal assembly , mech. seal assembly , complete set of mechanical seal assembly alongwith spare teflon bellow and ceramic seat as per drg.no: uct-2/mech/pump/164,size:1.7/8(1.875) , suitable for pump model:scp-md-25-270scp-md-25-230make:investa,liquor: acidic liquor of 1.5 ph ambient temperature spring of mechanical seals shall be in hastelloy-c , -do-but size:1.5/8(1.625) , -do-but size:1.3/4(1.75) ,suitable for pump model: scp-md-50-310, make: investa,liquor: acidic liquor of 1.5 ph ambient temperature spring of mechanical seals shall be in hastelloy- c , -do-but size:1.1/4(1.25) , make: chemflow,liquor: acidic liquor of 1.5 ph ambient temperature spring of mechanical seals shall be in hastelloy - c , -do-but size:1.1/8(1.125), suitable for pump model: 50x32-125, msp-1a , 40x32-125, msp-1a, 50x32-160 msp-1a,make:chemflow, liquor: acidic liquor of 1.5 ph ambient temperature spring of mechanical seals shall be in hastelloy - c , -do- but size:1.3/8(1.375) , suitable for pump model:65x50-160, msp-1b , 60x50-160, msp-1b ,make:chemflow, liquor: acidic liquor of 1.5 ph ambient temperature, spring of mechanical seals shall be in hastelloy - c