Accession Number:

ADA012266

Title:

Development and Evaluation of Phosphonitrilic Fluoroelastomer O-Rings.

Descriptive Note:

Final rept. 13 Feb 1974-12 Feb 1975

Corporate Author:

FIRESTONE TIRE AND RUBBER CO AKRON OH CENTRAL RESEARCH LABS

Personal Author(s):

Report Date:

1975-04-01

Pagination or Media Count:

174.0

Abstract:

The purpose of this investigation was to develop and evaluate phosphonitrilic fluorelastomer compounds for O-ring hydraulic seal applications. Formulations were sought which would be serviceable in hydraulic fluids over the temperature range of -80F to 400F. The polymer used in this investigation was a phosphonitrilic fluoroelastomer prepared in the Central Research Laboratories of The Firestone Tire and Rubber Company and having the formula POCH2CF3OCH2C4F8HNn. The effects of reinforcing agents, vulcanization agents and stabilizers on compound properties were investigated. Efforts were made to optimize curing times and temperatures stress-strain properties hardness compression set tear and abrasion resistance fluid, water, steam and acid resistance, and low temperature flexibility. In addition, the Seal Group of Parker Hannifin fabricated O-ring seals from selected stocks and conducted dynamic extrusion and chew tests on the seals. In related studies experiments were conducted on the coating of stainless steel cable with phosphonitrilic fluoroelastomer compounds.

Subject Categories:

  • Adhesives, Seals and Binders
  • Coatings, Colorants and Finishes
  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE