Loctite Clear Silicone Waterproof Sealant

Features and Benefits

Loctite Clear Silicone is a multipurpose adhesive and sealant which creates a waterproof, protective seal that is ideal for metal, glass, rubber, tile and porcelain. It is designed to be used indoors and outdoors to repair everything from electrical connections to seams on boots to stop leaks in wet weather. Loctite Clear Silicone can be used to bond or repair saltwater or freshwater aquariums.

Recommended on

  • Bonding ABS, glass, ceramic, porcelain, wood, aluminum, stainless steel, cultured marble, fiberglass, granite, vinyl tile, some rubbers & plastics
  • Sealing or repairing door frames, windows, vents, toys, appliances, gaskets, weather-stripping, outside of fireplace doors, shoes & boots
  • Extreme temperature resistance: All-season use
  • Waterproof: Indoor and outdoor use
  • No cracking, peeling or shrinking  
  • Gap filling  
  • Impact resistant and flexes with materials



Step 1: Safety Precautions

Apply and cure in a well-ventilated area. Wear gloves.

Step 2: Preparation

Use between -37°C and 60°C. Protect work area. Surfaces must be clean, dry and free of old caulk, grease, dust and other contaminants. Note: Paint will not adhere to silicone. If desired, paint items prior to gluing. Remove cap. Puncture inner seal with other side of cap. Attach nozzle and cut to desired bead size.

Step 3: Application

As an adhesive: Apply to one of the surfaces to be bonded. When bonding rubber or plastic surfaces, lightly roughen surface for best results. Press materials together. If possible, clamp parts together for full cure time of 24 hours.

As a sealant: Apply with a steady pressure, forcing sealant into the joint. Tool within 5 minutes. Do not use in joints deeper than 12 mm  without the use of a backer rod. Use in joints between 1/4'' and 3/4'' wide. For aquariums: Apply a 1/4'' bead to the edge of glass, covering the thickness of the glass edge. Set glass on base and repeat procedure for all sides. All joints must be glass to sealant to glass with no entrapped air bubbles. Apply additional sealant to inside joints. Do not use in aquariums larger than 30 gallons and/or aquariums containing water greater than 46 cm in height.

Step 4: Cleanup

Clean tools and adhesive residue immediately with mineral spirits. Cured sealant may be carefully cut away with a sharp-edged tool.

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