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PRODUCT DATA of RTV S 691
MaterialRTV S 691
Safety Datasheetrtv s691 msds
Product DatasheetRTV-S 691
Product TypeTwo-part, room-temperature-vulcanising adhesive.
Chemical CompositionSilicone, Filled.
Name of ManufacturerWacker-Chemie GmbH
Johannes-Hess-Str. 24, D-84489 Burghausen, Germany
+49-86 77-83-20 04
+49-86 77-83-55 91
www.wacker.de
EXPERIENCE IN PRACTICE
Development StatusSpecial Commercial Product
Cost RangeVery High
Lot ReproducibilityGood
Space ExperienceExtensive
PHYSICAL PROPERTIES
Specific Gravity1.41 to 1.43
Viscosity180 to 260 cP
Remark:Initial Viscosity
Pot Life90 to 110 min
Remark:Up to 2000 cps viscosity
Shelf Life12 month
Remark:room temperature
Data Quality: Manufacturer's data
THERMAL PROPERTIES
Thermal Conductivity0.39 W/m.K
Thermal Expansion Coefficient200 μstrain/°C
Remark: T > -105°C
Brittleness Temperature-105 °C
Glass Transition Temperature-111 °C
Remark: TMA
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
FlammabilityBurnt
Test: NASA NHB 8060-1B
Offgassing StatusFail
Test: NASA NHB 8060-1A
Thermal CyclingPass
Test: ECSS-Q-70-04
Temperature Range(space)-180°C to +200°C.
Outgassing(Avg data)TML = 0.35%, RML =0.35%, CVCM = 0.07%
Test: ECSS-Q-70-02
SPECIAL RECOMMENDATIONS
Special RecommendationsRecommended proportions are 90 pbw A to 10 pbw B. Thorough mixing is necessary. · Cure: 7 days at room temperature. · Quality control test according to ECSS-Q- 70-02 is recommended. · Use with primer Wacker G 790 for better adhesion · Offgassing can be reduced to an acceptable level by curing at 65°C.