1. Mixing of the two components

Mix Part A and Part B components according to recommended weight ratios.

Automatic mixing: The products should be used by means of automatic dosing equipment with a meter/static mixer because of the efficiency of degassing the material.

In order to avoid any air bubbles that may affect the mechanical properties, it is recommended to degas separately A and B part, after pouring it slowly and regularly into the tanks of the dosing machine. The A and B parts should be dosed and

mixed with a static mixer with standard commercial equipment (A special care is recommended in pumping the product from the tanks to avoid any air entry before dosing and mixing).

Hand mixing: If necessary, limited to control sample preparation products can be mixed by hand with special care (Recommendation is to use spatula, as A part has a high viscosity) in order to limit the inclusion of air in the mixture.

After mixing A and B parts, it is preferable to degas the product to eliminate the air bubbles that would be visible in the finished part and which would reduce the mechanical properties.

Degassing is generally carried out with a vacuum of 30 to 50 mbar releasing the vacuum several times during the operation. A recipient with a high diameter/height ratio is better suited to quick degassing; however the height must be sufficient to contain the swelling of the elastomer under vacuum conditions.

2. Cure inhibition

Certain materials that the BLUESIL RTV 150 LD A & RTV 147 B BLACK may be in contact with when curing could inhibit the reaction. Especially troublesome materials are: sulphur-containing cured natural and synthetic rubber compounds (neoprene, latex, SBR), tin catalyzed silicone rubbers, amine catalyzed epoxies, PVC stabilized with tin salts and some polyurethane elastomers.

BLUESIL RTV 147 B BLACK may be stored at temperatures between -20°C / -4°F and 30°C / 86°F for up to 18 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.RoHS;VOC;WEEE


BLUESIL RTV 150 LD A & RTV 147 B BLACK is a black, two-component addition cure, silicone aerospace sealant.

It has been specifically designed to manufacture air seals for compressors blades of Jet engines. It is meeting the specifications, and has been qualified for this application by GE-Aviation:

  • BLUESIL RTV 150 LD A: qualified to A15 F36 s4
  • BLUESIL RTV 147 B BLACK: qualified to A15F35 B2 s3

BLUESIL RTV 150 LD A & RTV 147 B BLACK imparts high thermal stability, good processing and low density. 

High Temperature Protection

2 Part RTV



  • Easy processing
  • Low density
  • Non corrosive
  • High thermal stability

Abradable air seal for compressor blades of jet engines.

Asia Pacific;Europe Middle East Africa;Central and South America;North America




Viscosity6000PairedCompNF T 76102mPa.s









hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1Hardness77PairedMixISO 868sh.A
elongation_68a5ddf2-2baf-4e60-ac6f-0a8a18a758b2elongation_68a5ddf2-2baf-4e60-ac6f-0a8a18a758b2Elongation30PairedMixNF ISO 37%
tensile-strength_e61eb2e0-4dc3-47b0-a61f-b673f1b265dctensile-strength_e61eb2e0-4dc3-47b0-a61f-b673f1b265dcTensile strength3.4PairedMixNF ISO 37MPa