BOSS 389+ Silicone Sealant

1 Pack (MOQ)

Business Type Supplier, Trader, Distributor
Colours This product is available in clear, white, black, and grey.
Packaging Available in 290 ml cartridges and 600 ml sausages.
Elongation >300%
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Preferred Buyer From

Location Anywhere in India

Product Details

Durometer Hardness, Shore A, points
25 - 32
Tensile Strength, N/mm2
1.5 - 2.0

BOSS® 389+ weatherproofing silicone sealant is a construction-grade sealant that provides unmatched adhesion, weather resistance and can be used on a wide variety of materials. It is a one-part, neutral cure, and low-odour sealant.


  • Compatible with all structural silicone sealant.

  • Good weather and temperature resistance.

  • Medium modulus – with expansion/compression capability up to ± 25% of the original joint width.

  • Neutral cure, with a long open time.

  • Permanently elastic after curing.


  • Ideally suited for weatherproofing, waterproofing, sealing of expansion and control joints, and general-purpose glazing.

  • Other bondable surfaces include anodized aluminium, concrete, cement, wood, ceramics, and painted surfaces.

  • Works well with ACP, glass, glazed surfaces, and galvanized steel.

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