Specification	3M 421 1.875" X 36YD

Adhesive	Rubber
Backing	Lead Foil
Carrier	Lead Foil
Color	Silver
Length (ft)	108 ft
Length (yd)	36 yd
Shelf Life	18 Months
Shelf Life Start	Date of Manufacture
Storage/Refrigeration Temperature (Maximum)	80 °F
Storage/Refrigeration Temperature (Minimum)	60 °F
Tape Type	Lead Foil
Temperature Range (Max)	225 °F
Temperature Range (Min)	-60 °F
Thickness	0.0063 in
Thickness - Adhesive	0.0023 in
Thickness - Backing, Carrier	0.004 in
Width	1.88 in

421 Series

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Part	Storage/Refrigeration Temperature (Maximum)	Storage/Refrigeration Temperature (Minimum)	Shelf Life Start	Shelf Life	Thickness - Adhesive	Tape Type	Thickness - Backing, Carrier	Thickness	Carrier	Backing	Temperature Range (Max)	Temperature Range (Min)	Color	Width	Adhesive	Length	Length (yd)	Length (ft)
3M (TC) 421CIR-0.563(2000)	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	0.56 in	Rubber
3M (TC) 3M 421 4" X 8.625"-25	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	4 in	Rubber	8.63 in
3M (TC) 3M 421 0.75" X 0.75"-250	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	0.75 in	Rubber	0.75 in
3M (TC) 3M 421 0.5" X 3"-100	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	12.7 mm	Rubber	3 "
3M (TC) 3M 421 1.5" X 3"-100	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	1.5 in	Rubber	3 "
3M (TC) 3M 421 5.67" X 36YD	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	5.67 in	Rubber		36 yd	108 ft
3M (TC) 3M 421 CIRCLE-0.313"-2000	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	0.31 in	Rubber
3M (TC) 3M 421 4" X 6"-25	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	4 in	Rubber	0.5 ft
3M (TC) 3M 421 7.25" X 8"-25	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	7.25 in	Rubber	8 in
3M (TC) 3M 421 7" X 7.25"-25	80 °F	60 °F	Date of Manufacture	18 Months	0.0023 in	Lead Foil	0.004 in	0.0063 in	Lead Foil	Lead Foil	225 °F	-60 °F	Silver	7 in	Rubber	7.25 in

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Datasheet

3M 421 1.875" X 36YD | Datasheet