ORING
| Date | Clue |
|---|---|
| 2025-12-07 | Bit of letter-shaped hardware |
| 2024-07-09 | Circular gasket |
| 2023-02-16 | Letter-shaped gasket |
| 2022-08-14 | Torus-shaped gasket |
| 2021-11-07 | Certain gasket |
| 2015-01-11 | Gasket variety |
| 2012-10-11 | Certain gasket |
| 2012-05-22 | Part of an airtight seal |
| 2011-11-22 | Circular gasket |
| 2011-08-28 | Canning seal |
| 2011-01-23 | *Gasket type |
| 2010-12-15 | Circular gasket |
| 2009-09-10 | Circular seal |
| 2008-12-28 | Rubber gasket |
| 2008-10-21 | Space shuttle gasket |
| 2008-10-12 | Circular gasket |
| 2008-02-11 | Circular gasket |
| 2007-12-12 | Circular seal |
| 2007-02-04 | *Certain gasket |
| 2007-01-10 | Circular seal |
| 2005-08-11 | Certain NASA equipment … shown literally in the solution to this puzzle |
| 2004-06-30 | Certain gasket |
| 2004-05-03 | Space shuttle gasket |
| 2004-03-10 | Gasket |
| 2004-01-14 | Circular gasket |
| 2003-12-04 | NASA gasket |
| 2002-02-03 | Gasket |
| 2001-07-18 | NASA gasket |
| 2000-11-20 | Rocket gasket |
| 1999-04-20 | Space shuttle part |
| 1998-10-04 | Neoprene gasket |
| 1998-03-29 | NASA connector |
| 1997-08-10 | Rubber gasket |
| 1997-05-25 | Rocket gasket |
| 1997-03-30 | Bit of NASA equipment |