If it's a backup ring (T1, T2, T3, etc.), we also have Sakura seals in stock for immediate delivery along with O-rings.
The backup ring specified in JIS B2401-4 (formerly JIS B2407 backup ring for O-rings) is an auxiliary material used for O-rings in high-pressure and dynamic applications. At Sakura Seal, we can also manufacture special dimension products in addition to the dimensions specified by JIS and other standards, so please feel free to contact us.
Inquire About This Product
basic information
It is mainly used to prevent the phenomenon of O-ring protrusion. The standard material is Teflon (PTFE / fluororesin), and there are three types of standard shapes with different mounting characteristics (T1 spiral, T2 bias cut, T3 endless).
Price information
The price varies depending on the quantity, so please feel free to contact us.
Delivery Time
P1
※In principle, standard products are available for immediate delivery from stock, but delivery times may vary depending on quantity and other factors, so please feel free to contact us.
Applications/Examples of results
Prevention of O-ring extrusion under high pressure conditions.
Line up（5）
| Model number | overview |
|---|---|
| T1 (Spiral) | This is a backup ring with excellent fit and strength characteristics. |
| T2 (Bias Cut) | This is a backup ring with an excellent fit shape. |
| T3 (Endless) | This is a backup ring with excellent strength characteristics. |
| For Flat Fixed Groove | This is a backup ring with a non-standard shape. |
| For Oil Pneumatic Packing | This is a backup ring with a non-standard shape. |
catalog（1）
Download All Catalogs
Company information
Sakura Seal Co., Ltd. is a seal product manufacturer that specializes in the production and sale of O-rings, oil seals, and various types of gaskets. We particularly excel in molded products made from fluororubber, and we offer a wide range of high-performance materials with special properties, including not only general-purpose FKM materials but also FFKM materials. With our deep knowledge of various seal products, we maintain a stock of over 20,000 types, even within Tokyo, and strive to remain an organization that provides high convenience for industries and society.
