KALENE® 800 is a low-molecular-weight liquid polymer derived by the depolymerization of butyl rubber. It vulcanizes at either ambient or elevated temperatures with the standard curatives for butyl rubber. KALENE® 800 is light gray and contains no solvents or additives. KALENE® 800 has the lower viscosity of the two KALENE® grades available and is the preferred liquid butyl rubber for coating applications. KALENE® 800 provides gas impermeability, chemical resistance, moisture resistance, good electrical properties, and excellent vibration/sound damping qualities.

Chemical Family: Butyl Rubber

Molecular Weight: 36,000.0 g/mol

Features: Chemical Resistance, Cold-Flow Resistance, Good Electrical Properties, Good Moisture Resistance, High Viscosity, Improves Adhesion, Low Molecular Weight, Sound Dampening Properties, Water Resistance

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Identification & Functionality

Chemical Family
CASE Ingredients Functions
Product Families

Features & Benefits

CASE Ingredients Features
Product Benefits
  • KALENE® 800 offers the performance benefits of butyl rubber and the processing convenience of a liquid. It makes convenient bases for sealants, coatings, and adhesives. These coatings have higher solids than those based on butyl rubber because the KALENE® products are liquids.
  • KALENE® elastomer's butyl properties impart chemical resistance to a wide variety of sealants and adhesives. It is ideal for applications requiring chemical and moisture resistance.
  • KALENE® products also provide tack to pressure sensitive adhesives and improve the adhesion of butyl-based adhesives and sealants. Since they cure by the same mechanism as butyl rubber, they become part of the polymer matrix.

Applications & Uses


Physical Form
Light gray
Typical Properties
ValueUnitsTest Method / Conditions
Typical Viscosity Range (at 66°C)800,000 - 1,150,000cP-
Specific Gravity0.92-ASTM D1875
Density7.7lb/galASTM D1875
Average Molecular Weight36000.0-GPC
Volatiles0.3wt %ASTM D1416
Ash Content0.1wt %ASTM D1416
Solid Content100.0%ASTM D1416
Unsaturation2.5 - 3.5Mole %Ozone Analysis
Technical Data
ValueUnitsTest Method / Conditions
Glass Transition Temperature-70.0°C-
Viscosity (at 66°C)800000.0cP-
Flash Point163.0°C-

Technical Details & Test Data


KALENE® 1300 is a low molecular weight grade of butyl rubber. It is a viscous liquid at typical processing temperatures. The table below indicates the viscosity (cP) when heated to typical processing temperatures.

Temperature Viscosity (cP)
66°C 8,00,000
93°C 1,50,000
121°C 40,000
149°C 16,000

Many systems require both butyl rubber properties and much lower viscosity. The standard method is to dissolve butyl rubber in solvent. KALENE® products are much more soluble than butyl rubber, so they produce adhesives, sealants, and coatings with a lower volatile content. The viscosity at 25°C of KALENE® 1300 in common solvents is shown below:

Solids Content Viscosity in Toluene (cP)

Viscosity in Mineral Spirits (cP)

10% 15 25
50% 380 1,200
90% 900,000 1,500,000

Packaging & Availability

Packaging Type
Regional Availability
  • Global (Excluding Russia)
Typical Packaging

KALENE® 800 is available in the following standard packages:

  • 100 lb. release coated fiber keg
  • 350 lb. steel drum

Storage & Handling

Shelf Life
2 Years
  • KALENE® products are high viscosity polymers. Heating the drum lowers the viscosity for easier handling. Vent the drums before heating to avoid pressure build up.
  • KALENE® liquid polymers can be compounded with virtually any type of rubber processing equipment. Processing requirements vary with the desired finished properties and with the other formulation ingredients.
Storage Condition

Store in a dry environment to prevent damage to the packaging. The liquid rubber products are stable over a wide temperature range. They are not damaged by freezing temperatures or occasional short-term exposure to temperatures of 66°C.