More Flash After Deepening Mold Vents: Defect Mapping First
Evaluate venting and flash together. Map short shots, trapped gas and flash by location before adjusting the parting surface or channels.
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Updating Silicone Mold Shrinkage from Trial Data: Direction and Cavity
Validate shrinkage for the compound, process and geometry rather than copying another product's value. Link tool dimensions, measurement st…
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Silicone Isolators in Compression and Shear: Direction Matters
Stiffness and deformation paths change with loading direction. Compression-test behavior is not a direct basis for lateral shear or incline…
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Do Four Silicone Feet Share Load Equally? Center of Gravity Checks
Total weight divided by foot count is only an initial estimate. Center of gravity, base stiffness, mounting heights and surface flatness ch…
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Large Silicone Buttons Hard to Press at the Edge: Guide Checks
When a large button works centrally but not at its edge, examine off-center tilt, guides and contact location. Lower hardness may reduce re…
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Silicone Keypad Force–Travel Curves: Comparable Test Conditions
Compare tactile curves only under consistent conditions. Specify probe shape, press location, speed and lower support; peak forces from dif…
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Ozone Testing of Rubber Parts: Why Specimen Strain Matters
Read ozone results with the compound, specimen geometry and loading state. An unstretched sheet does not represent a ring held in tension o…
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Dry Heat and Damp Heat Aging: Choosing Silicone Test Conditions
Dry-heat and damp-heat results at the same temperature are not interchangeable. Select conditions for actual humidity, condensation and con…
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O-Ring Installation Stretch: Checking Cross-Section Change
An O-ring stretches circumferentially when its installed inside diameter exceeds its free inside diameter. Its cross-section changes too. U…
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Silicone O-Ring Gland Fill: Allowing for Expansion and Swell
Gland depth controls only part of the compression state. An O-ring also needs space to deform sideways; temperature and fluid exposure can …
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