Moreover, oil seal rubber parts also find usage in aerospace, mining, and construction industries, where they protect expensive equipment from damage due to lubricant loss or ingress of dust and debris.
Price of Oil Seals: Factors and Considerations
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Now, let's consider the pricing. Iridium spark plugs typically retail at a premium compared to standard options. Depending on the brand and application, one could expect to pay anywhere from a few dollars more per plug to potentially several times the cost of regular spark plugs. While this might seem steep at first glance, it's crucial to factor in the extended interval between replacements. If an iridium plug can last twice as long as a standard plug, the effective cost over time may not be as dramatic If an iridium plug can last twice as long as a standard plug, the effective cost over time may not be as dramatic

As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
