Loctite 421 - 20 g instant glue

Code: 981961
Not rated
35,92 € –29 %
Loctite 421 - 20 g instant glue
35,92 € –29 % 25,17 € / pcs 30,45 € incl. VAT
In stock (31 pcs)
Delivery to:
06/08/2025
Delivery offer
Loctite 421 is a 20 g medium viscosity (500 mPa.s) instant adhesive, IDH 195691, ideal for bonding porous materials such as wood and fabrics, with a temperature resistance of -40 to +80 °C.

Detailed information

Delivery throughout the EU

Product detailed description

Loctite 421 is a medium viscosity instant adhesive designed for bonding difficult to bond materials that require uniform loading and high tensile and shear strength. This product enables rapid bonding of a wide range of materials, including metals, plastics and elastomers. Loctite 421 is primarily intended for bonding porous and absorbent materials such as wood, paper, leather and fabrics.

Technical parameters:

  • Viscosity: 500 [mPa.s]
  • Maximum joint: 0.15 [mm]
  • Temperature resistance: - 40 to + 80 [°C]
  • , nitrile, ABS, PVC, polycarbonate, phenol and others.

Manipulation shear strength [N/mm2]:

  • On steel: 18 - 26
  • On ABS in: 6 - 20 -20

Fixation speed [s]:

  • On steel in: 5 - 20
  • On ABS in: 2 - 10
  • On polycarbonate in: 10 - 40
  • Technology: cyanoacrylate
  • Appearance: transparent, clear to straw yellow liquid
  • Ingredients: single-component
  • Viscosity: medium
  • Curing: moisture
  • Application: bonding
  • For disassembly and cleaning, please refer to the product data sheet. Loctite 421 Safety Data Sheet on request.

    Henkel - Loctite 421 - IDH: 195691 - Catalog number: 27825

    Loctite 421 - 20 g

    Description
    viscosity, designed for bonding difficult-to-bond materials that require uniform loading and high tensile and shear strength.

    This product allows for rapid bonding of a wide range of materials, including metals, plastics and elastomers. Loctite 421 is primarily intended for bonding porous and absorbent materials such as wood, paper, leather and fabrics. [°C]
  • Bonded material: steel, aluminum, neoprene, rubber, nitrile, ABS, PVC, polycarbonate, phenol and others.
Handling shear strength [N/mm2]:
  • On steel: 18 - 2 20
  • On polycarbonate in: 5 -20
Fixation speed [s]:
  • On steel in: 5 - 20
  • On ABS in: 2 - 10
  • On polycarbonate in: 10 - < >:
  • Technology: cyanoacrylate
  • Appearance: transparent, clear to straw yellow liquid
  • Ingredients: single-component
  • Viscosity: medium
  • Curing: moisture
  • Application: bonding
  • of the product. Safety data sheet Loctite 421 on request.

    You can find this product in the following categories

    • Adhesives and sealants
    • Instant adhesives
    • By bonded material
    • Plastics and rubbers
    • . target="_blank" rel="noopener noreferrer">Adhesives and sealants
    • Instant adhesives By bonded material
    • Metals
    • Adhesives and sealants
    • Instant adhesives
    • Acidic surfaces
    • Instant adhesives
    • By temperature resistance
    • Up to 80 °C Adhesives and sealants
    • By viscosity
    • Up to 4000 Pa.s
    • Adhesives and sealant Instant adhesives


LOCTITE® 421 Clear, colorless liquid cyanoacrylate adhesive for bonding difficult-to-bond materials with medium viscosity that require even stress distribution and high tensile strength in shear. The product provides a fast bond on a wide range of materials, including metals, plastics and elastomers. It is particularly suitable for bonding porous and absorbent materials.



LOCTITE 421
Clear, colourless to straw yellow, 1-component, liquid cyanoacrylate adhesive for bonding difficult-to-bond materials with medium viscosity.
Yellow, 1-component, liquid cyanoacrylate adhesive for bonding difficult-to-bond materials with medium viscosity, which require even stress distribution and high shear strength. The product provides a fast bond on a wide range of materials, including metals, plastics and elastomers. It is particularly suitable for bonding porous and absorbent materials.

Additional parameters

Category: Adhesives and sealants > Instant glues > According to the glued material > Plastics and rubbers
Weight: 0.032 kg
EAN: 4100630278254
Color: clear, yellow: straw
Manufacturer's brand: Loctite
Product: superglue
Číslo výrobce: 195691
Značení: LOCTITE 421, 20G
Typ: Etyl

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