John Crane Type 1 Mechanical Seal 4.625 Inch Shaft, Code 028D1D1-316

The John Crane Type 1 Mechanical Seal is a robust, single-spring elastomer bellows seal designed for reliable performance in general industrial applications, such as pumps, mixers, and compressors handling water, oils, and mild chemicals. This model features a 4.625-inch shaft size with code 028D1D1-316, indicating 316 stainless steel construction for enhanced corrosion resistance. Key benefits include easy installation due to its balanced design, self-aligning capabilities, and a non-clogging spring that reduces maintenance needs. It offers superior leak prevention with carbon vs. ceramic faces and Viton elastomers, making it suitable for moderate pressure and temperature environments. Advantages over similar products include John Crane's proven durability and global support network, though it may require more frequent inspections in highly abrasive conditions compared to cartridge seals. Drawbacks can include limited compatibility with extreme pH fluids without material upgrades. Based on attached images, the seal appears new, unused, with components like the bellows spring, seal ring, and faceplate in pristine condition, packaged in protective wrapping. No serial number visible on faceplate; no parent/child assets noted. Estimated market price for new units ranges from $1,200 to $1,800 USD based on comparable online listings (e.g., eBay and industrial surplus sites). For resources, refer to John Crane's official Type 1 datasheet (available at https://www.johncrane.com/-/media/files/j/johncrane_com/products/mechanical-seals/type-1.pdf) and installation guide (https://www.johncrane.com/en/resources/product-literature). Model decoder: '028' likely denotes face materials, 'D1D1' elastomer and secondary seals, '-316' metal parts.