| 1916 |
Launched Japan’s first leather U packing (25 inches dia). |
| 1955 |
O-rings of “KS” standard were released. |
| 1961 |
JIS (Japan industrial Standard) standard for O-rings was establish. |
| 1962 |
Products made of S-RETHANE rubber were registered. |
| 1963 |
KY-Packings were launched and pioneered to replace V-packings. |
| 1966 |
SKY-Packings and SDR-Wipers were launched and firmly establish Japan's defacto standard for hydraulic systems. |
| 1968 |
Mini Y-Packings (MYN-type) were released for pencil cylinders. |
| 1969 |
Seals for power steering started striding toward Japan's best selling automotive seals. |
| 1970 |
S-KID rubber (non-lub material) was developed for modern pneumatic equipments.
GLY-Packings and Mini-Y Packings (MYA-type) maintenance free series came off. |
| 1979 |
LUBE-RUN high durability material was developed for pneumatic seals.
LUBE-RUN derived products PGY-Pakings & PNY-Pakings were put on sales. |
| 1981 |
Compact PSD-Packings (for pistons), and NPU-Packings (rod packing+wiper in one piece structure) were released as an evolutionary sequence of LUBE-RUN series. |
| 1983 |
PDU-Packings went on sales as "rod packing + wiper in one piece structure". |
| 1984 |
Double acting HSD-Packings were released for pistons of hydraulic cylinders. |
| 1986 |
RGY-Packings & RNY-Packings were launched as high durability packings for hydraulic cylinders, compatible with the grooves for SKY-packings. |
| 1988 |
(T)SGY-Packings & (T)SNY-Packings hit the marketplace where low & wider temperature-responsive packings were desired. |
| 1991 |
Double acting RGU-Packings & PWL-Bearing (back-up ring + resin wear ring) were released. |
| 1995 |
SMJ-Rod seals (high sealing performance) were released. |
| 1996 |
PPD-Packings (innovated PSD-packings) came off to fulfill the need to overcome larger eccentricity involved with lower degree of processing method employed by pneumatic cylinder producers. |
| 1999 |
MYP-Packings were released for extra durable pneumatic cylinders. |
| 2003 |
Soft wipers (configuration of fiber assembly),
S-FLON Tape Wear ring, SWO-Wear rings, SMD-Wipers went on sales. |
| 2005 |
Ferrule gaskets for sanitary pipes were launched to the food processing industry. |
