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PROGRESS SILICONES PRODUCES O-RINGS FOR ALL SECTORS OF INDUSTRY. French and international standards Custom-made O-rings from one-off items to large series. Hardness from 5 to 90 Shore A depending on the material: Silicone FPM / FKM (fluorocarbone) EPDM (ethylene-propylene-diene monomer) NBR (acrylonitrile-butadiene) HNBR (hydrated acrylonitrile butadiene caoutchouc) CR (polychloroprene) We provide materials in various grades by prior request: Contact with food:FDA, BFR Contact with water: KTW, ACS, NFS61, WRAS, W270 Pharmacopoeia: USP class VI, ISO 10993... Implantable < 29 days Aeronautics ROHS REACH Secondary services: Special packaging: blister, kraft paper, etc. Packs for O-rings Personalised labels Please contact our Sales department for further information on our O-rings.

Viacat 4100 (Monobutyltin Oxide) is a white powder which has C4H10O2Sn as chemical formula. It is an noncorrosive organotin compound which can be used in the synthesis of saturated polyester in powder coatings, insulating varnishes and coil coatings. Monobutyltin Oxide is also known as butylhydroxostannane, butylstannonic acid and butylhydroxytin oxide. Availability Europe and United States ViaCat 4100 (MBTO) is on stock in our local warehouses in both Europe and United States. Our lead time is about one week if delivered in 25 KG drums. Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Viacat 220 (Monobutyltintris(ethylhexoate)) is used as catalyst for manufacturing of plasticizers, saturated and unsaturated polyesters, coating resins and in urethane reaction to reduce cure temperature to 140 – 160°C. Shipment Info Europe and United States Provided ViaCat 220 (MBTEH) is on stock in our local warehouses our lead time is about one week if delivered in 25 KG drums. Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

SilQon OPCTS ( Octaphenylcyclotetrasiloxane ) is a white solid which has C48H40O4Si4 as chemical formula. It can be used for synthesizing pharmaceutical intermediates and organic silicone intermediates, especially for high temperature resistant phenyl silicone oil and other polymers. Octaphenylcyclotetrasiloxane is also known as phenyl D4. Availability United States Provided SilQon OPCTS is on stock in our local warehouse our lead time is about one week if delivered in 100 Kg drums. Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details. Not available in EU countries.