3M 421 Lead Foil Tapes

3M(TM) 421 is an electrically and thermally conductive lead foil tape.

  • Dark silver 
  • Lead foil backing 
  • Green rubber adhesive

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Size/DescriptionColorUOMPrice 
1+ Rolls10+ Rolls25+ Rolls50+ Rolls
Size: 3M 421 0.125" x 36yd
Part #: 3M 421 0.125" x 36yd
Package Qty: 1
RollNA$17.07$16.12$15.18Add to Cart
Size: 0.125-5-421
Part #: 0.125-5-421
Package Qty: 1
RollNANA$5.98$5.62Add to Cart
Size: 3M 421 0.188" x 36yd
Part #: 3M 421 0.188" x 36yd
Package Qty: 1
RollNA$23.97$22.64$21.30Add to Cart
Size: 0.25-5-421
Part #: 0.25-5-421
Package Qty: 1
RollNANA$8.96$8.43Add to Cart
Size: 3M 421 0.313" x 36yd
Part #: 3M 421 0.313" x 36yd
Package Qty: 1
RollNA$39.90$37.68$35.46Add to Cart
Size: 0.375-5-421
Part #: 0.375-5-421
Package Qty: 1
RollNA$14.23$13.44$12.65Add to Cart
Size: 3M 421 0.438" x 36yd
Part #: 3M 421 0.438" x 36yd
Package Qty: 1
RollNA$55.83$52.73$49.62Add to Cart
Size: 3M 421 0.563" x 36yd
Part #: 3M 421 0.563" x 36yd
Package Qty: 1
RollNA$71.77$67.78$63.79Add to Cart
Size: 3M 421 0.625" x 36yd
Part #: 3M 421 0.625" x 36yd
Package Qty: 1
RollNA$79.67$75.24$70.82Add to Cart
Size: 0.625-5-421
Part #: 0.625-5-421
Package Qty: 1
RollNA$23.72$22.40$21.08Add to Cart
Size: 3M 421 0.688" x 36yd
Part #: 3M 421 0.688" x 36yd
Package Qty: 1
RollNA$87.70$82.82$77.95Add to Cart
Size: 0.875-5-421
Part #: 0.875-5-421
Package Qty: 1
RollNA$24.35$22.99$21.64Add to Cart
Size: 1.5-5-421
Part #: 1.5-5-421
Package Qty: 1
RollNA$36.04$34.03$32.03Add to Cart
Size: 3M 421 0.47" x 36yd
Part #: 3M 421 0.47" x 36yd
Package Qty: 1
RollNA$59.91$56.58$53.26Add to Cart
Size: 1in x 36yd
Part #: 3M 421 1" X 36YD
Package Qty: 1
RollNA$127.47$120.39$113.30Add to Cart
Size: 0.75in x 36yd
Part #: 3M 421 0.75" X 36YD
Package Qty: 1
RollNA$95.60$90.29$84.98Add to Cart
Size: 0.5in x 36yd
Part #: 3M 421 0.5" X 36YD
Package Qty: 1
RollNA$63.74$60.20$56.66Add to Cart
Size: 2in x 36yd
Part #: 3M 421 2" X 36YD
Package Qty: 1
RollNA$254.93$240.77$226.61Add to Cart
Size: 3M 421 0.71" x 36yd
Part #: 3M 421 0.71" x 36yd
Package Qty: 1
Roll$100.56$90.50$85.48$80.45Add to Cart
Size: 3M 421 0.875" x 36yd
Part #: 3M 421 0.875" x 36yd
Package Qty: 1
Roll$123.93$111.54$105.34$99.14Add to Cart
Size: 3M 421 0.94" x 36yd
Part #: 3M 421 0.94" x 36yd
Package Qty: 1
Roll$133.13$119.82$113.16$106.50Add to Cart
Size: 5-5-421
Part #: 5-5-421
Package Qty: 1
Roll$133.48$120.13$113.46$106.78Add to Cart
Size: 3M 421 1.125" x 36yd
Part #: 3M 421 1.125" x 36yd
Package Qty: 1
Roll$159.33$143.40$135.43$127.46Add to Cart
Size: 3M 421 1.25" x 36yd
Part #: 3M 421 1.25" x 36yd
Package Qty: 1
Roll$177.04$159.34$150.48$141.63Add to Cart
Size: 7-5-421
Part #: 7-5-421
Package Qty: 1
Roll$186.87$168.18$158.84$149.50Add to Cart
Size: 3M 421 1.375" x 36yd
Part #: 3M 421 1.375" x 36yd
Package Qty: 1
Roll$194.74$175.27$165.53$155.79Add to Cart
Size: 8-5-421
Part #: 8-5-421
Package Qty: 1
Roll$213.57$192.21$181.53$170.86Add to Cart
Size: 3M 421 1.625" x 36yd
Part #: 3M 421 1.625" x 36yd
Package Qty: 1
Roll$230.15$207.14$195.63$184.12Add to Cart
Size: 9-5-421
Part #: 9-5-421
Package Qty: 1
Roll$240.27$216.24$204.23$192.22Add to Cart
Size: 3M 421 1.75" x 36yd
Part #: 3M 421 1.75" x 36yd
Package Qty: 1
Roll$247.85$223.07$210.67$198.28Add to Cart
Size: 3M 421 1.875" x 36yd
Part #: 3M 421 1.875" x 36yd
Package Qty: 1
Roll$265.56$239.00$225.73$212.45Add to Cart
Size: 10-5-421
Part #: 10-5-421
Package Qty: 1
Roll$266.96$240.26$226.92$213.57Add to Cart
Size: 3M 421 1.89" x 36yd
Part #: 3M 421 1.89" x 36yd
Package Qty: 1
Roll$267.68$240.91$227.53$214.14Add to Cart
Size: 3M 421 2.25" x 36yd
Part #: 3M 421 2.25" x 36yd
Package Qty: 1
Roll$318.67$286.80$270.87$254.94Add to Cart
Size: 3M 421 2.75" x 36yd
Part #: 3M 421 2.75" x 36yd
Package Qty: 1
Roll$389.48$350.53$331.06$311.58Add to Cart
Size: 3M 421 2.83" x 36yd
Part #: 3M 421 2.83" x 36yd
Package Qty: 1
Roll$400.81$360.73$340.69$320.65Add to Cart
Size: 3M 421 3.78" x 36yd
Part #: 3M 421 3.78" x 36yd
Package Qty: 1
Roll$535.36$481.82$455.06$428.29Add to Cart
Size: 3M 421 4.72" x 36yd
Part #: 3M 421 4.72" x 36yd
Package Qty: 1
Roll$668.50$601.65$568.23$534.80Add to Cart
Size: 3M 421 5" x 36yd
Part #: 3M 421 5" x 36yd
Package Qty: 1
Roll$708.15$637.34$601.93$566.52Add to Cart
Size: 3M 421 5.67" x 36yd
Part #: 3M 421 5.67" x 36yd
Package Qty: 1
Roll$803.04$722.74$682.58$642.43Add to Cart
Size: 3M 421 7" x 36yd
Part #: 3M 421 7" x 36yd
Package Qty: 1
Roll$991.41$892.27$842.70$793.13Add to Cart
Size: 3M 421 8" x 36yd
Part #: 3M 421 8" x 36yd
Package Qty: 1
Roll$1133.04$1019.74$963.08$906.43Add to Cart
Size: 3M 421 9" x 36yd
Part #: 3M 421 9" x 36yd
Package Qty: 1
Roll$1274.67$1147.20$1083.47$1019.74Add to Cart
Size: 3M 421 11" x 36yd
Part #: 3M 421 11" x 36yd
Package Qty: 1
Roll$1557.93$1402.14$1324.24$1246.34Add to Cart
Size: 0.5 in x 5 yd
Part #: 1/2-5-421
RollNA$18.97$17.92$16.86Add to Cart
Size: 0.75 in x 5 yd
Part #: 3/4-5-421
RollNA$20.86$19.70$18.54Add to Cart
Size: 1 in x 5 yd
Part #: 1-5-421
RollNA$27.82$26.27$24.73Add to Cart
Size: 2 in x 5 yd
Part #: 2-5-421
RollNA$48.05$45.38$42.71Add to Cart
Size: 3 in x 5 yd
Part #: 3-5-421
RollNA$72.08$68.08$64.07Add to Cart
Size: 4 in x 5 yd
Part #: 4-5-421
Roll$106.78$96.10$90.76$85.42Add to Cart
Size: 6 in x 5 yd
Part #: 6-5-421
Roll$160.18$144.16$136.15$128.14Add to Cart
Size: 12 in x 5 yd
Part #: 12-5-421
Roll$320.35$288.32$272.30$256.28Add to Cart
Tape Structure (Backing/Adhesive)Lead foil/Rubber (green)
Backing Thickness mils (mm)4 mil (0.10 mm)
Total Thickness mils (mm)6.3 mil (0.16 mm)
Adhesion to Steel oz/in (N/100 mm)31 oz/in (34 N/100 mm)
Tensile Strength lbs/in (N/100 mm)15 lb/in (263 N/100 mm)
Elongation at Break %14
Temperature Range °F (°C)-60° to 225(-54° to 106°)
Restocking fee60% restocking fee