TOMBO™ No. 2670
A self-seal type rubber O-ring that is made by putting various rubber elastomers into a mold and machining both ends together into a circular shape.
In addition to a shaft seal (packing), it is also fitted into grooves and used as a gasket. It adapts well even with a small clamping load, and can seal against a vacuum pressure up to a high pressure of 25 MPa.
Gaskets for various equipment
Usage scope and standard dimensions
Usage temperature range: depends on the rubber material
Maximum working pressure: 25 MPa
JIS B 2401 AS568B
Material Symbol & Material
|Material Symbol||Material||Working temperature range (°C)|
|NBR||Nitrile rubber (oil resistance)||-30 to 120|
|CR||Polychloroprene rubber (weather resistance)||-30 to 120|
|EP||Ethylene propylene rubber (weather and steam resistance)||-40 to 150|
|SI||Silicone rubber (weather and cold resistance)||-50 to 200|
|PF||Perfluoro elastomer (corrosion resistance)||0 to 200|
|FA||Fluoro elastomer (heat resistance)||-15 to 200|
- TOMBO is a registered trademark or trademark of NICHIAS Corporation.
- Name of products with "®" are registered trademarks of NICHIAS Corporation.
- Name of products with "™" are trademarks of NICHIAS Corporation.
Low-friction, non-cohesive fluoro elastomer
Rubber O-ring Fluoro-PlusTOMBO™ No. 2670-FA-F
Chemical-resistant fluoro elastomer
Rubber O-ring Fluoroelastomer FBTOMBO™ No. 2670-FB
Rubber molded gasket (PTFE-cladded)
EBILON™ GASKETTOMBO™ No. 9013/9013-D
Steam-resistant perfluoro elastomer