Accession Number:

AD0773652

Title:

Development of Thermally Stable Poly(Fluoroalkoxyphosphazene) Transmission Seals for the UH-1 Helicopter.

Descriptive Note:

Final rept. 19 Jan 72-18 Aug 73,

Corporate Author:

HORIZONS INC CLEVELAND OHIO

Report Date:

1973-09-01

Pagination or Media Count:

66.0

Abstract:

716042AMMRCCTR-73-41TransmissionsMechanics, Helicopters, Phosphazene, Seals, Fluorine compounds, Organic compounds, Elastomers, Lubricants, SynthesisChemistry, Abrasion resistance, Formulations, VulcanizatesVulcanized elastomers, UH-1 aircraft, H-1 aircraft, Polynitrilo-phosphoranylylideneThe objective of this program was to develop polyfluoroalkoxyphosphazene compounds suitable for service 1100 hrs. as UH-1 helicopter transmission shaft lip seals over the -65F to 230F range. Significant advances were made in compounding CF3CH2O2PN-HCF2C3F6CH2O2PNn copolymers to meet these objectives. Dynamic tests by National Seal Division of Federal-Mogul Corp. of molded CF3CH2O2PN-HCF2C3F6CH2O2PNn seal formations determined the seals to have over 1000 hours running life. These test results provide promising evidence of the suitability of polyfluoroalkoxyphosphazenes for service as UH-1 helicopter transmission seals. Modified author abstract

Subject Categories:

  • Adhesives, Seals and Binders
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE