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Home > Products > By Market > Battery > Momentive RTV 627 Grey Silicone Rubber Compound

Momentive RTV 627 Grey Silicone Rubber Compound

  • Product code: RTV 627
  • Manufacturer: Momentive
  • Package size: 454 gr
  • Shelf Life:

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RTV627 silicone rubber compound is a two-component room temperature vulcanizing Momentive Performance Materials rubber compound for potting and encapsulation, particularly where flammability is of concern. This product is supplied with curing agent in matched kits which are designed for use at a convenient 1:1 ratio by weight or volume.

FEATURES:

  • Convenient 1:1 mix ratio by weight or volume for use in automatic dispensing or hand operations
  • Chemical composition contains no solvents for ease of use on production lines
  • Low viscosity allows easy flow in and around complex parts
  • Cure rate can be accelerated by heat
  • Will cure in deep sections or enclosed assemblies without exotherm and with low shrinkage
  • Reversion resistant and hydrolytically stable
  • Recognized by Underwriters Laboratories with a flammability classification of UL94V-0 in a sample thickness of 3.2 mm (0.125 in.)
  • Retention of elastomeric properties at temperatures up to 204°C (400°F)

Typical Properties

UNCURED PROPERTIES RTV 627A RTV 627B
Color Black Beige
Consistency Easily Pourable Easily Pourable
Viscosity, cps 1380 1120
Specific Gravity 1.37 1.38

UNCURED PROPERTIES WITH CURING AGENT ADDED

Color Dark Gray
Consistency Easily Pourable
Viscosity, cps 1270
Work Time @ 25°C (77°F), hrs 2
CURED PROPERTIES (Cured 1 hr. @ 100°C/212°F)  
Hardness, Shore A Durometer 62
Tensile Strength, kg/cm2
(psi)
33 (475)
Elongation, % 60
Tear Strength, kg/cm (lb/in) 3.4 (19)
Shrinkage, % 1.3

 

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