ACM – polyacrylate rubber
ACN – acrylonitrile; component in nitrile rubber
AEM – ethylene-acrylic rubber; copolymer of ethylene and methyl acrylate
AMS – Aerospace Material Specification
ANSI – American National Standards Institute
AQL – Acceptable Quality Level
ARP – Aerospace Recommended Practice
AS – Aerospace Standard
ASTM – American Society for Testing and Materials
AU – polyester-based polyurethane rubber
BR – polybutadiene rubber
CC – cubic centimeter
CO – homopolymer of epichlorohydrin
CR – polychloroprene rubber (Neoprene®)
CSM – chlorosulfonated polyethylene rubber (Hypalon®) DIA – diameter
DIN – German standardization organization
ECO – copolymer of epichlorohydrin and ethylene oxide
EP, EPM, EPDM – ethylene-propylene rubber
EPA – Environmental Protection Agency
EU – polyether-based polyurethane rubber
FDA – Food and Drug Administration
FEP – tetrafluoroethylene
FEPM – tetrafluoroethylene-propylene rubber
FFKM – perfluoroelastomer
FKM – fluorocarbon elastomers
FMQ – fluoromethyl silicone rubber (fluorosilicone) FSA – Fluid Sealing Association
FVMQ – fluoro vinyl methyl silicone rubber (fluorosilicone) GRS – Government Rubber Styrene; now SBR
HNBR – hydrogenated nitrile rubber
HSN – highly saturated nitrile; alternative name for HNBR IIR – butyl rubber; copolymer of isobutylene and isoprene IN – inch
IR – isoprene rubber
IRHD – International Rubber Hardness degrees
IRM – Industry Reference Material, as in IRM 903 oil
ISO – International Organization for Standardization JIC – Joint Industrial Conference on Hydraulic
Standards for Industrial Equipment
KN/M – kilonewton per meter; SI equivalent of pli; sometimes a unit of measure in ASTM D 2000 line call-outs
MAX – maximum
MEK – methyl ethyl ketone MIL – Military (specification) MIL STD – Military Standard MIN – minimum
MPA – megapascal; SI equivalent of psi; sometimes a unit of measure in ASTM D 2000 line call-outs
MQ – methyl silicone rubber
MS – Military Standard
NAS – National Aerospace Standard
NASA – National Aeronautics and Space Administration NBR – nitrile butadiene rubber (Buna N);
copolymer of acrylonitrile and butadiene
NBS – National Bureau of Standards NR – natural rubber; polyisoprene NSF – National Sanitation Foundation
OSHA – Occupational Safety and Health Administration
PLI – pounds per linear inch
PMQ – phenyl methyl silicone rubber
PSI – pounds per square inch
PTFE – polytetrafluoroethylene
PVMQ – phenyl vinyl methyl silicone rubber RMA – Rubber Manufacturers Association RPM – revolutions per minute
SAE – Society of Automotive Engineers
SBR – styrene butadiene rubber (Buna S); copolymer of styrene and butadiene
SG – specific gravity
SI – denotes The International System of Units (the modern metric system); taken from the French, “Le
Système International d’Unités” SPEC – specification
Tc – critical temperature
TFE – tetrafluoroethylene; a fluoroplastic
Tg – glass transition
TIR – Total Indicator Reading
UL – Underwriters Laboratories
UV – ultraviolet light
VMQ – vinyl methyl silicone rubber
XNBR – carboxylated nitrile rubber