Product

Electrical Industrial Silicone Sealant CL221-2 Global Supply

1.Product Overview:

CL221-2  is a single-component, acid-cured, room-temperature vulcanizing silicone sealant with excellent adhesion and a wide range of bonding applications. After curing, it exhibits superior mechanical properties, impact resistance, shock resistance, water resistance, corona resistance, leakage resistance, and chemical resistance. It also has good lubrication properties and can be used in environments ranging from -50°Cto130°C.

2.Product Features:

  • Single-component, acid-cured, room-temperature
    vulcanization.
  • Fast curing with excellent adhesion to metals, glass, and
    othermaterials.
  • Complies with EU RoHS Directive, REACH regulations,
    andFDAfood-gradecertification.

3.Applications:

  • Bonding and sealing of medical devices.
  • Assembly and gap filling for flat glass and various types of glass.
  • Installation and sealing of doors, windows,and small aquariums.
  • Gap filling and sealing in other applications requiring transparency.

Key Features:

  • Single-component paste, acid-curing at room temperature.
  • Fast curing with superior bonding to metals, glass, and other materials.
  • Complies with EU RoHS Directive and REACH Regulations.

Primary Applications:

  • Bonding and sealing medical devices.
  • Flat glass assembly, glass gap-filling, and sealing.
  • Door/window installation and small aquarium sealing.
  • Transparent gap-filling and sealing in other applications.

Technical Specifications

Property

Test Value

Test Method

Appearance

Smooth, homogeneous paste

Visual Inspection

Colour

Semi-transparent

Visual Inspection

Tack-free Time

6 minutes

GB/T13477.5-2002

Density,

1.00g/cm3

GB/T13477.2-2002

Hardness (Shore A)

21±2

GB/T 531.1-2008

Tensile Strength

≥1.2 MPa

GB/T 528-2009

Elongation at break

≥600 %

GB/T 528-2009

Volume resistivity

≥1.5×1014 ,,W.cm

GB/T 1692-2008

Dielectric strength

≥20KV/mm

GB/T 1695-2005

Note:Testing conditions: 23±2°C, 50±5% RH.

Application Guidelines

Optimal Conditions: Temperature 4°C–40°C, relative humidity 40%–80%.

1.Surface Preparation

  • Clean substrates thoroughly using solvents such as anhydrous ethanol, isopropanol, or acetone to remove rust, dust, grease, and moisture.

2.Application

  • Cut the nozzle with a utility knife and dispense the adhesive evenly onto the prepared surface.
  • Align and fix the bonded surfaces within the tack-free time (6 minutes).
  • Allow curing at room temperature for 24 hours before use.

3.Storage After Use

  • Tighten the cap immediately after use.
  • If a skin forms at the nozzle, remove it before reuse.

Packaging Specifications:

  • 300 mL/cartridge: 24 cartridges per box.
  • 6 L/sausage: 4 sausages per box.
  • Steel drums: 200 kg net weight per drum.

Storage

  • Store in a cool, dry place below 27°
  • Shelf life: 12 months from the production date.
  • Handle and transport as general chemicals.

Safety&Precaution

  • Keep out of reach of children.
  • Skin contact: Wipe off immediately and rinse with water.
  • Eye contact: Flush with water for 15 minutes and seek medical attention.
  • Use in well-ventilated areas.

Important Notes

  • Users must thoroughly understand product properties and perform compatibility tests prior to application.
  • Due to the diversity of real-world applications, our company does not guarantee performance under specific conditions and assumes no liability for direct, indirect, or incidental damages.
  • For technical support, contact our engineers for tailored solutions.

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