Blog

A retaining lip is not difficult because it is deep. It is difficult because of the geometry around it. This article reframes undercuts and thin walls as demoulding strain, and sets out the four reviews that belong before tooling approval.

Irregular covers fail because the gasket is drawn to the cover silhouette instead of the machined land. This article covers the two-line test, bolt interruptions, stepped surfaces, compression variation across a large cover and how to verify a sample in the real assembly.

Waterproof electronic enclosures rarely fail because of the silicone. They fail because the cover, the screw layout and the gasket are designed as separate parts. This article looks at where enclosure gaskets actually leak, how compression should be treated as a window rather than a target, why corner geometry matters more than compound choice, and what to measure before a mould is cut.

A filter housing is sealed by a gasket that the customer installs, often with wet hands and no torque wrench. That single fact explains most leaks after a cartridge change. This article covers the three sealing interfaces in a housing, why fill ratio matters more than compound, how over-tightening flattens a ring, and what dimensions to send with an enquiry.

Most coffee machine gasket specifications describe one temperature, while the part actually lives on a cycle: cold, hot, wet, dry, acidic, rinsed. This article looks at where seals sit in a machine, why the temperature at the gasket is not the temperature on the display, how thickness sets compression, and why compression set ends more seals than heat does.

An electrical cabinet seals across a moving door, so compression is never uniform along the perimeter. This article examines the four geometric reasons perimeter gaskets leak, how profile and contact width interact with latch force, why a moulded corner usually beats a mitred joint, and how to check the contact pattern before another gasket is ordered.

Repeat flange leaks are usually not a material problem. A surface can be inside its flatness tolerance and still have a shape a gasket cannot follow. This article separates amplitude from wavelength, explains why a thick gasket bridges a depression instead of filling it, and sets out what to measure before specifying a custom silicone flange gasket.

A joint can pass a dimensional check and still leak where the mating surface steps, curves or deflects between bolts. This article explains how to measure the real gap, why extra thickness rarely fixes uneven contact, how flat, lip and stepped sections behave differently, and what to confirm before a silicone seal tool is cut.

A gasket that leaves its groove between placement and final torque is not a bad moulding; it is a design that allows movement in the direction the assembly pushes. This article separates slide, roll and fold failures, compares locating holes, tabs and machined grooves, and sets out how to verify positioning on the real housing.

Tears at an inner hole usually start at the moulded edge, where the thinnest material meets the highest installation stress. This article explains why whitening is an early warning, how hole position and material bridges decide handling strength, why corner radius matters more than wall thickness alone, and which checks belong on the drawing rather than on the sample.