J-B Weld Black Silicone – 85g (31319B)

Description

Genuine J-B Weld · Part no. 31319B

J-B Weld Black Silicone is an 85g tube of waterproof, non-shrinking silicone for sealing and bonding around the car: lamp lens housings, window and door frames, weather strips, mouldings and interior trim. Black is the colour to pick where the bead sits against black rubber seals, black plastic trim or dark lamp bodies.

Good to know

• How long before the car can be used? It sets in about 1 hour and fully cures in 24 hours; keep the joint dry and unstressed until then, and don't put the car through a car wash the same day.
• Will it fix a leaking windscreen? It can seal a small leak round the edge of the glass, but it doesn't replace the urethane that bonds a modern windscreen in; a loose or lifting screen needs a glass fitter.
• How do I get it to stick? Pull off old sealant, clean the surfaces with a degreaser, let them dry, then lay one continuous bead and tool it smooth before it sets.
• Can I paint it? Silicone generally doesn't take paint, so pick the colour you want to see; black blends into most rubber and trim.

Which one?

For a bead that won't show on glass or clear lenses, J-B Weld Clear Silicone (31310A) is the clear tube; for grey trim, J-B Weld Ultimate Grey Silicone (32327B).

Key features

• 85g tube
• Black
• Waterproof, mould and mildew resistant
• No-shrink formula
• Sets in 1 hour, cures in 24 hours

Specification