Flat Seal – Style 4

Drawing Item Identification:

A: OA thickness in inches
B: OA width in inches
C: Thickness after radius in inches
R: Radius inches

FLAT SEAL STYLE 4 DIAGRAM

ABCR
3/8"7"3/16"3/16"
1/2"7"3/8"3/16"
9/16"7"5/16"3/16"
5/8"7"3/8"3/16"
3/4"7"1/2"3/16"
3/4"7"3/8"1/4"
7/8"7"1/2"1/4"
1"7"3/4"1/4"
1"7"3/4"5/16"
1"7"5/8"3/8"
1-1/4"7"3/4"3/8"

Material Specifications

Physical TestsSpecificationsNatural 1103Natural 1177Natural 1187Neoprene 1501
Tensile StengthDie C ASTM D4123000 psi (min)2500 psi (min)2500 psi (min)2500 psi (min)
Elongation at RuptureASTM D412450% (min)450% (min)400% (min)400% (min)
300% ModulusASTM D412900 psi (min)900 psi (min)-900 psi (min)
Durometer Hardness, Shore Type AASTM D224060 - 7045 ± 550 - 6060 - 70
Water Absorption70 Hrs. @ 212°F ASTM D47110% change in volume (max)10% by weight (max)10% by volume (max)10% by weight (max)
Compression SetASTM D395 Method B 22 Hrs/ @ 158°F30% (max)30% (max)25% (max)30% (max)
Tensile Strength After Oxygen Bomb AgingASTM F57280% (min) of tensile strength80% (min) of tensile strength-80% (min) of tensile strength
Low Temperature BrittlenessASTM D2137 Method A, 9.3.2Non-Brittle after 3' @ -40°CNon-Brittle after 3' @ -40°CNon-Brittle after 3' @ -40°CNon-Brittle after 3' @ -25°C

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