Without minor lip
Type code
As can be seen from the seal cross-section shown in Fig. 14.2, shaft seals are complex shapes that require advanced mold design and molding techniques (see Section 7.3 for discussion of fluoroelastomer molding). For some time, most shaft seals were made in the United States by compression molding. Injection molding of shaft seals is prevalent in Europe, and is being used increasingly in the United States. An advantage of compression molding is that preforms (usually rings cut from extruded tubing) are used that closely approximate the amount of stock required for the final parts, so compound waste is minimized. For injection molding, the amount of cured stock in the central sprue and runner (actually a thin sheet leading to the seal lip) is often large compared to the stock required for the final part, so the waste of high-cost fluoroelastomer may be high. Such waste is reduced in modern injection molding designs.
Neoprene Rubber Gasket A Versatile and Durable Solution for Sealing ApplicationsBS
Scrape off all the traces of dirt and old gasket from the engine and sump flanges with a paint scraper.
4. Heating, Ventilation, and Air Conditioning (HVAC) Systems Silicone gaskets are used in HVAC systems to seal ducts and prevent air leaks.