supply of lead tablets,17.5 mm dia made from pig lead of is: 27.1965 or refined secondary lead of specn. to is: 3713.1968 wall thickened.lead tablets,17.5 mm dia made from pig lead of is: 27.1965 or refined secondary lead of specn. to is: 3713.1968 wall thickened.,lead seal tablets circular type as per fig-1 of irs spec z14-71 manufactured from any one of the grades of specification is-27:2023 rev.05 (pig lead) or is-3717:2024 re v.02 (refined secondary lead). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]