been shown by their developers to be valid for
bulk compression. Journal of Engineering Mechan-
experimental structures formed with rubber ma-
ics, ASCE, 117(8): 17911805.
terials. The relations provide a simple and ratio-
nal mechanics-based approach to the selection of
bonds. Rubber Chemistry and Technology, 47: 202
seal shape factor, and allow use of the modulus of
212.
elasticity of the sealant as a design variable. In
this way the effect of temperature on the modu-
cepts and behavior. Chapter 1 in Science and Tech-
lus of elasticity, which is routinely measured for
nology of Rubber (F.R. Eirich, Ed.). New York: Aca-
elastomeric materials that are used in cold cli-
demic Press.
mates, can be directly incorporated into the seal-
Gent, A.N. (1978b) Strength of elastomers. Chap-
ant selection and seal design process, as can the
ter 10 in Science and Technology of Rubber (F.R.
effect of loading rate or time. Future work in this
Eirich, Ed.). New York: Academic Press.
area should focus on (1) incorporating tempera-
Gent, A.N. and P.B. Lindley (1958) Internal rup-
ture and rate-dependent mechanical properties in
ture of bonded rubber cylinders in tension. Pro-
the sealant selection and seal design process, and
ceedings of the Royal Society, 249(Ser. A): 195205.
(2) establishing by field evaluation how results
Gent, A.N. and P.B. Lindley (1959) The compres-
from standard tests of model seals, in which dis-
sion of bonded rubber blocks. Proceedings of the
placements and loads are measured, can be used
Institute of Mechanical Engineers, 173(3): 111117.
in conjunction with the relations described here
Gent, A.N. and A.A. Meinecke (1970) Compres-
for a practical mechanics-based seal design.
sion, bending, and shear of bonded rubber blocks.
Polymer Engineering and Science, 10(1): 4853.
Gent, A.N., R.L. Henry, and M.L. Roxbury (1974)
Interfacial stresses for bonded rubber blocks in
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