Standard and Metric Oil Seal Size Chart

Global O-Ring and Seal's Oil Seal Size Chart offers a comprehensive list of over 15,000 oil seal size combinations. Users can search for Shaft, Bore, and Width dimensions in both inches and millimeters. This interactive chart displays all relevant sizes based on input dimensions. For more details or to request a quote, please call 832-448-5550 or submit the Product Inquiry Form on the Oil Seals Page or Fabric Reinforced Seals Page. Alternatively, these oil seal dimensions can be searched within our online store by selecting from the options below.

Methods to Measure and Select Oil Seals for Industrial Use

Oil seals are critical in many industrial applications to safeguard shafts and bearings from oil, grease, contaminants, and dirt. Typically composed of an outer metal ring and a flexible inner rubber ring, oil seals can have single or double lips depending on the application. Ensuring the correct size and type of oil seal involves precise measurement of inner and outer diameters and width. This section offers insights into effectively measuring and choosing the appropriate oil seal.

Choosing the Right Oil Seal Type

Identifying the correct oil seal type is essential, whether for new equipment fitting or replacing a damaged seal. Here are key points to help in choosing the suitable type:

• Oil seals come primarily in single lip and double lip types. The single lip is typically at the bottom, requiring consideration of the inner diameter.
• Double lip oil seals feature an additional lip on top to shield against external contaminants and dirt.
• Pressing along the inner diameter at the top can help identify whether it is a single or double lip seal.
• Refer to the manufacturer's code or a reference guide to understand the specific type of oil seal. Different seals, such as type A, B, or C single lip and type BO, ADL double lip, have distinct configurations.
• Type B seals feature an outer diameter made of metal, while type A uses rubber. Type C includes reinforced metal for added stability.
• The material properties define their application. For instance, type C single lip seals provide structural stability for heavy engineering, while rubber type A seals are resistant to heat and chemicals, fitting for industries involving chemicals or high temperatures.
• Accurate measurement of the oil seal is crucial, discussed in the next section.

Measuring Oil Seals

Oil seals prevent the mixing of liquids or other elements and reduce friction in moving parts. The oil seeping between the lip and shaft lifts the lip to maintain a necessary gap, preventing direct contact. Properly measuring oil seals requires precision, given their varied dimensions based on application. Here's how to do it:

• Visual inspections may give some clues but lack accuracy. Measuring inner and outer diameters with calipers is essential.
• Measurement factors include height, lip type, and inner and outer diameters. Although material cannot be measured, it must be considered.
• Take at least three readings, preferably with a Vernier caliper, and use the average value if the differences are minimal.
• Measure the bearings and account for gaps.

If you want to buy automotive or industrial oil seals, these tips can guide you. Ensure you source from reliable manufacturers and suppliers who can guarantee leak-proof seals. For applications in food or pharmaceuticals, verify that industrial oil seals are FDA-approved. SSP Manufacturing Inc. has over three decades of experience providing high-quality custom oil seal for various industrial purposes.

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