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U.S. Department of Health and Human Services

Inventory of Effective Food Contact Substance (FCS) Notifications

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FCN No. 246

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Food Contact Substance:  Fluorocarbon cured elastomer produced by copolymerizing tetrafluoroethylene (CAS Reg. No. 116-14-3) and propylene (CAS Reg. No. 115-07-01) and subsequent curing of the copolymer (CAS Reg. No. 27029-05-6) with triallylisocyanurate (CAS Reg. No. 1025-15-6) and 2,2'bis-(t- butylperoxy)diisopropylbenzene (CAS Reg. No. 25155-25-3).
Notifier:  Greene, Tweed and Company, Inc.
Manufacturer:  Greene, Tweed and Company, Inc.
Intended Use:  In the fabrication of molded parts for food processing equipment, such as o-rings, gaskets, diaphragms and other materials, that function primarily in sealing applications.
Effective Date:  08/13/2002
Limitations/Specifications:  The fluorocarbon base polymer shall contain no less than 65 weight percent of polymer units derived from tetrafluoroethylene and no less than 25 weight percent of polymer units derived from propylene. The uncured elastomer shall be composed of no more than 6 weight percent of triallylisocyanurate and no more than 5 weight percent of 2,2'-bis(t-butylperoxy)diisopropylbenzene, and no more than 15 weight percent carbon black (produced by the furnace combustion process) (CAS Reg. No. 1333-86-4). The PCE must comply with the provisions of 21 CFR 177.2600(d) and (g) and the extractive limitations prescribed in 21 CFR 177.2600(e) and (f), and 21 CFR 177.2400(d)(2).
Environmental Impact Decisions:  Environmental Decisions Site