วงแหวนพลาสติก
(Flat Gasket/Joint Plat)
| Code | Size mm. |
| G8490FB-20/25/32 | D20/25/32 |
| G8490FB-16/20/25 | D16/20/25 |
| G8490FB-032 | D32 |
| G8490FB-040 | D40 |
| G8490FB-050 | D50 |
| G8490FB-063 | D63 |
| G8490FB-075 | D75 |
| G8490FB-090 | D90 |