|New Carbon Yarns Task Group Seeks Participants
Users or producers of valve and pump packing materials constructed
from carbon yarn and used in shipbuilding are invited to develop
standard tests and specifications for these products with ASTM
Subcommittee F25.02 on Insulation Processes. Membership in ASTM
International is not required.
In May, the subcommitteewhich is part of ASTM Committee F25 on Ships and Marine Technologyinitiated an Intermediate Carbon
Yarns Task Group to explore the application of these products
with experts in packing-materials manufacturing.
The group will develop recommendations for either revising the
current ASTM graphitic packing specification or preparing a new
specification, says subcommittee chairman Vito Florimonte, senior
program manager, Marine Systems Department, BBN Technologies,
Verizon Company, Arlington, Va. The current ASTM specification,
Standard Specification for Packing Material, Graphitic or Carbon
Braided Yarn, is limited to high carbon purity carbon yarns.
Intermediate carbon yarns of lower carbon purity produced by
offshore vendors have resulted in packing products that may replace
those packings made with the more expensive high purity carbon
yarns, he says. For this reason, an alternative objective of
this task group could be to develop a new specification for the
lower carbon purity yarns if efforts to revise the existing specification
prove to be impractical.
Contact Florimonte to participate or comment (phone: 703/284-4608). The task group
first meets during the Dec. 10-12 meetings of Committee F25 in
Miami Beach. For meeting or membership details, contact Bob Morgan, director, ASTM Technical Committee Operations (phone: 610/832-
Copyright 2002, ASTM