The photo shows a “fire department connection” used to take water for firefighting during a fire.
O-rings are used at the opening.
When assembling, the large amount of lubricant was put into these O-rings,
so when it's replaced for maintenance,
the workers doing the replacement would often get dirty, which was a big problem.
With our “SP Rubber”, the material itself is slippery,
so it can be assembled without any lubricant or grease,
it means that workers can replace the O-ring without getting dirty.
If you're interested, please feel free to contact us.
[Rubber Packing / No Lubricant Needed / Greaseless / Slippery Rubber]