Ohno Rubber / OHNO Tappet Cover Gasket (Single Item), Toyota/Toyota Ace/Dyna RZY220 EFI 1RZE July 2001 - October 2006 Displacement 2000
An oil seal (washer) used for engine cylinder blocks, diesel injection pumps, and the lid of the tappet attachment part of the body.
It is mainly made of rubber with excellent oil and heat resistance.
Please see the manufacturers website for more details.