Orapi 621 Water-Repellant Silicone Grease

Orapi 621 Water-Repellant Silicone Grease is an insulating, non-adhesive, water-repellent paste formulated from silicone for assembling and various greasing.

ADVANTAGES

  • Non-adhesive.
  • Water-repellent grease demonstrates excellent hold in liquids.
  • Lubricates, and provides optimal sliding.
  • Reinforced resistance to rusting; withstands solvents and chemical agents extremely well.
  • Demonstrates reinforced dielectrical characteristics, even in humid environments.
  • Chemically inert; does not corrode metals.
  • Does not damage plastics or rubber materials.

Product Description

Insulating, non-adhesive, water-repellent paste formulated from silicone for assembling and various greasing.

ADVANTAGES

  • Non-adhesive.
  • Water-repellent grease demonstrates excellent hold in liquids.
  • Lubricates, and provides optimal sliding.
  • Reinforced resistance to rusting; withstands solvents and chemical agents extremely well.
  • Demonstrates reinforced dielectrical characteristics, even in humid environments.
  • Chemically inert; does not corrode metals.
  • Does not damage plastics or rubber materials.

APPLICATION FIELDS

  • SI 4 is especially recommended as an insulating water-repellent.
  • Protects against electrolytic corrosion.
  • Electrical equipment, relays, connectors, antennas and more.
  • Battery terminals, pin head adaptors for lamps, and all equipment requiring protection from water.
  • Lubrication during assembly of parts when there is very little backlash. Facilitates sliding. Lubricant for metal/plastic, metal/elastomer surfaces.
  • Treat rubber O-rings.
  • Suitable for greasing devices in vacuum.

TECHNICAL CHARACTERISTICS

Aspect Colourless, translucent
Grade N.L.G.I 2
Drop point None
Evaporation in 24 hours at 200°C 3%
Worked penetration after 60 strokes at 25°C 225-250
Freezing point <-50°C
Operating temperature -40°C to 200°C
Di-electrical strength kV/mm 20
Dielectric constant at 25°C (10² cycles/s) 2 85
Loss tangent at 25°C (10²cycles/s) 0.0006
Volume resistivity at 25°C ohm/cm 1.10
Arc resistance, in seconds, minimum 80

INSTRUCTIONS FOR USE

Surfaces that have been previously lubricated with a mineral-based grease must be perfectly clean before
application of SI 4.

PACKAGING

  • Complies with Army – NATO G 392
  • Complies with ATEX 94/9/CE Directive

Technical Information Sheet Reference

TIS No. 621 / 4
Issued 27/09/03

Orapi Limited. The information contained in this bulletin is based on our experience and reports from customers
Where stated the figures listed are typical of normal production only. There are many factors outside our control which can affect the product’s performance for this reason the information supplied is given without responsibility.

We supply to all of these industries...

Gates-logo