Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL O-RING (DBA HUTCHINSON SEAL CORP)
11634 PATTON RD, DOWNEY, CA, 90241
Parent company: HUTCHINSON
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Methyl ethyl ketone | Thiram | Total (lbs) | |||
| 2003 | — | 866 | 866 | |||
| 2002 | 7,022 | 282 | 7,304 | |||
| 2001 | 6,755 | — | 6,755 | |||
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.