ALPHASEAL 121

HIGH MODULUS ACETOXY-CURE SILICONE SEALANT

PRODUCT INFORMATION

Alphaseal 121 is a ready to use silicone sealant that cures rapidly on exposure to atmospheric moisture to form a robust rubber seal.

Alphaseal 121 has a long life expectancy with excellent weathering resistance properties make it ideal for conditions where wide ranges of temperature, humidity or UV exposure might be present.

 

It is also very versatile and can be used for both interior and exterior applications, with excellent adhesion to glass, ceramics and sanitary ware.

 

It is not suitable for use in ecological systems, such as aquariums, or where potable water may come in to contact with the sealant due to the presence of fungicides within the product.

KEY INFORMATION

  • Single Component

  • Fast Cure

  • Good resistance to tear and to weather

  • Elastic compound which accepts movement

  • Long service life (> 20 years)

TYPICAL APPLICATIONS

Alphaseal 121 is suitable for sealing in the following applications:

  • Sanitary ware and ceramic tiling in kitchens and bathrooms.
  • Infill, cladding panels and curtain walling.
  • All forms of glazing systems.
  • Caravans, boats, containers, refrigerated buildings and freezers.
  • Air conditioning and duct work.
  • In-situ gaskets for automotive and aircraft industries.
  • Draft proofing casement windows and doors.

PRODUCT CHARACTERISTICS

The following technical information and data should be considered representative or typical only. Therefore, the information should not be used for specification purpose.

*This time is shorter when temperature and relative humidity are higher. It is absolutely necessary to make sure that open time is not excessive. Otherwise, defective bonding could happen.

PRODUCT PERFORMANCE

The performance data presented here has been determined by Alpha Adhesives & Sealants Limited standard test methods and are average values that should not be used for specification purposes. Our recommendations on the use of this product are based on tests believed to be reliable. It is advised that users conduct their own tests to determine the suitability of the product for their specific application. Please note this product is not recommended for substrates like PE, PP, Teflon.

HANDLING & APPLICATIONS

The general  application  information  presented  here is  based  upon  typical conditions determined by Alpha Adhesives & Sealants Limited’s own testing. Our recommendations on the use of this product are based on methods believed to be reliable. It is advised that users conduct their own tests to determine the suitability of the product for their specific application.

All substrate surfaces should be cleaned of any dust, grit, loose material, wax, grease and oil using Alpha Cleaner T559 TF.

Application Method:

  1. Joint edges should be protected using masking tape.
  2. Cut the tip of the nozzle at a 45° angle to give a slightly larger hole than the gap that has to be filled.
  3. Alphaseal 121 can be applied by a pneumatic or hand gun under a uniform pressure to extrude a continuous smooth bead.
  4. After application, the sealant can be finished by using a wet spatula within 5 to 10 minutes of application. The tape should be removed as soon as possible before formation of a skin.

The rate of cure in the joint is dependent on the ambient conditions, the assembled joint arrangement and the depth of the sealant between the joint faces.

Clean tools immediately after use with Alpha Cleaner T559 TF. Clean hands with a proprietary hand cleaner.

HEALTHY & SAFETY INFORMATION

Alphaseal 121 is not classified as hazardous according to Directive EC 1272/2008. Please refer to the Alphaseal 121 Safety Data Sheet for further health & safety information.

STORAGE

Alphaseal 121 should be stored in its original container, in dry conditions and at temperatures between 5°C and 20°C. Alphaseal 121 will keep satisfactorily for up to 18 months from date of manufacture if stored according to the recommended conditions.

PRODUCT AVAILABILITY

Product Reference
Pack Size
Container
Box Quantity
Alphaseal 121
310ml
Cartridge
25

ISSUE : 3

12/06/18