DAPCO™ 2100 is an adhesive, solvent free, thixotropic silicone paste. DAPCO™ 2100 is most commonly used as a coating, sealant, or filleting material in the construction, repair and maintenance of all types of aircraft. The product can be applied using a variety of methods and is especially useful where fire resistance, exposure to phosphate ester fluids, and/or exposure to extreme temperatures -65 ºF (-54 ºC) to 400 ºF (204 ºC) are major considerations. The product can also be used as an insulative and/or ablative heat shield. The product is available in kit sizes of 2.5 oz and 6 oz injection kit style tubes.
Unit of Measure


Extreme Temperature

N/A -54 to 204 ºC-65 to 400 ºF

Shelf Life

N/A 6 months

Typical Properties


N/A Gray


N/A Thixotropic Paste

Viscosity at 77 Degree Fahrenheit (ºF) Temperature

N/A >20000 Poise

Specific Gravity (Cured)

N/A 1.37

Note for Typical Properties

N/A Shelf life is 6 months from mix/fill date if stored in a foiled bag at ambient conditions. Once opened, sealant should be recapped and replaced in resealable bag between times of usage. Shelf life good for 30 days after initially opened.


Track Free Time

N/A 10 to 15 min

Typical Cured Properties


N/A 50 Shore "A"

Substrates Includes

N/A Stainless Steel Titanium Aluminum Primed Aluminum

Lap Shear Strength Control

N/A 350 psi

Lap Shear Strength after 7 Days at 400 Degree Fahrenheit (ºF) Temperature

N/A 350 psi

Lap Shear Strength after 7 Days at 120 Degree Fahrenheit (ºF) Temperature and 100% Relative Humidity (RH)

N/A 350 psi

Lap Shear Strength after 7 Days in BMS 3-11 Hydraulic Fluid

N/A 280 psi

Peel Strength

N/A 20 lb/in

Flame Resistance BMS 5-63 Rev. K

N/A < 2 Seconds (sec) Self Extinguishing Time 0 Flame Penetration

Thermal Conductivity

N/A 0.224 W/m·K

Test Method for Thermal Conductivity

N/A American Society for Testing and Materials (ASTM E1225)

Note for Typical Cured Properties

N/A When cured in accordance with the recommended schedule, the above typical properties are developed.



N/A The substrate must be free from contamination, i.e. dirt, oil grease, etc. Clean the surface by wiping with a suitable solvent/cleaning agent and dry thoroughly. Handling strength is achieved in 24 hours at 72 ºF/25 ºC (loads on the product should be should be limited until full cure is achieved).


N/A DAPCO™ 2100 is generally cured at ambient temperatures above 55 ºF (13 ºC). Moisture helps develop final properties (a relative humidity ranging between 30-70% is preferred). Optimum physical properties are developed when the product is cured a minimum of seven days for sealing applications, and 14 days for faying surface applications at 72 ºF (22 ºC) and 50% R.H.


N/A Before the material has cured, the excess may be removed using DAPCO™ 2000 diluent.

Storage and Handling

Storage and Handling

N/A Shelf life: 6 months from mix/fill date at or below 80 ºF/27 ºC
Keep in unopened foil bags.



N/A Material Safety Data Sheet available upon request



  • Excellent fire resistance to 3500 ºF
  • Service temperature of -65 ºF up to 400 ºF
  • Universal primerless adhesion to diverse substrates
  • Good resistance to aerospace chemicals
  • Offers non-inhibition curing characteristics against other sealants and adhesives
  • Extended application time
  • One part premixed room temperature stability
  • Non-Volatile Content of 97%
  • Qualified to BMS 5-63, AMS3374, BAMS 552-004, AIMS 04-05-003, AIMS 04-05-008, and CMNP009



N/A The information in this bulletin is believed to be reliable however, when evaluating this product, the user should consider factors such as processing and environmental conditions which may influence performance. Inasmuch as the seller is unable to control the final use of this product, our liability is limited to replacing the product or refunding the purchase price of material which is proven not to comply substantially with the data presented in this bulletin. Seller is not responsible for any commercial loss or damage arising from the use of this product. The user is responsible for determining the product's acceptability for a specific purpose and to establish safety precautions as may be required. No statements or recommendations contained in this bulletin are to be construed as inducements to infringe any relevant patent.