Selleys Autofix Instant Gasket


Autofix Silicone Instant Gasket is a tough black R.T.V. silicone rubber which replaces conventional cork gaskets.


  • Forms gaskets instantly from the tube – any size, any shape.
  • Selleys Autofix Instant Gasket cures to a tough Silicone
  • Rubber which outperforms and replaces conventional paper, cork or rubber gaskets.
  • Autofix Instant Gasket flows into every space or unevenness between surfaces perfectly for a tough, high pressure seal.
  • Resists ageing
  • Resists temperatures from -50C to +205C.
  • Resists water, oil, grease and vibration.

Available Sizes

  • 75g tube – Clear and black
  • 310g cartridge – Clear and black

Available at

  • Supercheap Auto
  • Repco
  • Autobarn
  • Auto One
  • Mitre 10
  • Home Hardware
  • Thrifty Link

Where can this product be used?

  • Autofix Silicone Instant Gasket may be used on oil pans, rocker covers, gear boxes, water pumps, differential and thermostat housings, timing chain covers, lawn mowers, tractors, boats, etc.
  • It is ideal for sealing leaking windscreens or for long-lasting gaskets in dishwashers, refrigerators, oven doors, plumbing, heating, air conditioning, building systems and flanges of all kinds.

What materials is this product suitable for?

  • Oil pans
  • Rocker covers
  • Gear boxes
  • Water pumps
  • Machinery
  • Flanges

Handy tips

  • When eliminating cork gaskets, ensure that adequate clearance remains for mechanical parts, e.g. valve rocker covers. (In these cases do not fully tighten until sealant has cured).
  • During application a harmless vinegar odour is generated, but disappears as the sealant cures.

Safety tips

  • On contact, uncured sealant irritates eyes. In case of contact, flush eyes with water for at least 15 minutes. If irritation persists, seek medical advice.
  • If wearing contact lenses, take special care that lenses do not become contaminated with silicone.
  • Keep out of reach of children.
  • Wipe off skin immediately with cloth and wash with detergent and water.

Related Products


Selleys Windscreen Sealant

Selleys Autofix Silicone Windscreen Sealant is a neutral cure black silicone R.T.V. rubber for sealing leaking windscreens quickly and effectively.

Selleys D-Mastic

Selleys D-Mastic

D-MASTIC is an alkyl resin modified, oil based caulking compound. It forms a tack-free skin on the surface when exposed to air but remains soft underneath.


Selleys Autofix Instant Gasket

Autofix Silicone Instant Gasket is a tough black R.T.V. silicone rubber which replaces conventional cork gaskets.