Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Seal Materials

We handle MISUMI's sealants, which can be easily selected with specified dimensions. In the MISUMI e-catalog, you can select various O-rings, oil seals, gaskets, seal washers, packing and seal caps. In addition, we support a large number of standards such as JIS standard, JASO standard, AS standard and ISO standard.

[What is a sealant?]
It is a sealing material used for parts and mechanisms that perform rotational and reciprocating motions. Seals are classified as contact seals that come in contact with the moving part and non-contact seals that do not come into contact. Contact seals include O-rings, oil seals and mechanical seals. Non-contact seals include labyrinth seals used to seal compressed gas.

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Seal Materials

FAQ about Sealing materials

Question: Do you have the durability test data or service lifetime prediction for O-ring?

Answer: No.
There are no measurement data, related documents, or test data under certain conditions because it depends on the usage environment.

Question: What are seal materials? How do I choose the right seal material for my application?

Answer: Seal materials refer to the various materials used to create seals that prevent the passage of fluids or gases. These materials can be rubber, plastic, metal, or composite, and are used in O-rings, oil seals, gaskets, seal washers, sealing caps, and rubber seals.
Choosing the right seal material depends on several factors, including the type of fluid or gas being sealed, temperature, pressure, and environmental conditions.

Question: How do I determine the size of an O-ring?

Answer: The size of an O-ring is determined by its inner diameter (ID), outer diameter (OD), and cross-sectional diameter (CS). These measurements can be taken with a caliper or by consulting size charts provided by manufacturers.

Question: Can I use the Static O-ring in the dynamic sealing application?

Answer: No.
It is not recommended because it will deteriorate due to wear and cause damage.
Please use the Dynamic O-ring instead.

Question: Where are seal washers commonly used?

Answer: Seal washers are commonly used in plumbing, automotive, and industrial applications to prevent leaks around bolts, screws, and other fasteners.