Silcoset 101 Silicone rubber Ambersil Silicones Rubber - Elastomer >> Silicone rubber SEALANT Silcoset 101 MOD/Rolls Royce Approved Pourable Red, Shore A 55° A pourable red liquid which cures to form a tough silicone rubber. Shore hardness 55. Exceptional temperature and chemical resistance make this a suitable moulding material for such difficult products as low-melt metals and high styrene contents resins. Ambersil ‘Silcoset’ 101 is approved under the UK Ministry of Defence Air Materials Specification DTD 900, for use in the following applications: Caulking and sealing of aircraft. Pourable red liquid which cures to form a tough silicone rubber. Used in caulking and sealing of aircraft. Offers very good temperature and chemical resistance.